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Physician Directory

Our highly credentialed and experienced physicians

Daniel J. Waters, DO

Cardiothoracic Surgery

Board-Certified: Thoracic/Cardiovascular and General Surgery, American Osteopathic Board of Surgery

Fellow: American College of Osteopathic Surgeons, American College of Cardiologists, American College of Chest Physicians, American College of Surgeons

Fellowship-Trained: Cardiac Surgery, The Cleveland Clinic Foundation, Cleveland, OH

Residency: General Surgery, Des Moines General Hospital, Des Moines, IA

DO: University of Medicine and Dentistry of New Jersey, School of Osteopathic Medicine

Member: Society of Thoracic Surgeons, Iowa Society of Thoracic Surgeons, American Osteopathic Association, Iowa Osteopathic Medical Association, American Medical Association, Iowa Medical Society, Cerro Gordo County Medical Society

“Even after two decades plus, every patient I see is different and fresh. I’m in a high-end, very challenging specialty where the outcomes really change people’s lives. The stakes are high, but the patient rewards are great. I can help them live longer, better-quality lives.

“Most important to me is communicating with patients in a way that they understand and telling them the things they need to know. I want to not only treat their problem, but teach them how to manage it or avoid it for the rest of their lives. I love seeing my former patients out in the community living their lives and happy.”

Samuel J. Congello, DO

Cardiovascular Disease

Board-Certified: Interventional Cardiology and Cardiovascular Disease, American Board of Internal Medicine

Fellow: American College of Cardiology, American College of Physicians, American College of Osteopathic Internists, Society for Cardiovascular Angiography and Interventions

Fellowship-Trained: University of West Virginia, Morgantown, WV

Residency: Internal Medicine, Mercy Catholic Medical Center, Darby, PA

DO: Philadelphia College of Osteopathic Medicine, Philadelphia, PA

Member: American Osteopathic Association, Iowa Osteopathic Association, Iowa Medical Association, Cerro Gordo County Medical Society

Professor: Cardiology, College of Osteopathic Medicine, Des Moines, IA

“Both of my parents were physicians. They taught me that caring for patients is a privilege. Along with that privilege comes a responsibility to provide the best, most attentive and compassionate patient care. Patients put their lives in our hands. As a physician, I feel that the patient is my employer.

“I love working in this field and helping people overcome heart problems and cardiovascular disease. I like to get to know my patients personally and be available whenever they need me. I believe in treating patients and their family members the way I want to be treated – with caring, kindness, compassion and respect.

“I believe that every person who seeks my help deserves the best that cardiovascular medicine has to offer and the best that I personally have to offer. They deserve the best possible care and results.”

James T. Reeder, JR., DO

Interventional Cardiology

Board-Certified: Interventional Cardiology and Cardiology, American Osteopathic Board of Internal Medicine

Fellow: Society for Cardiovascular Angiography and Intervention, American College of Osteopathic Internists, American College of Cardiology

Fellowship-Trained: Cardiology, Chicago College of Osteopathic Medicine (Midwestern University), Chicago, IL

Residency: Internal Medicine, Osteopathic Hospital of Wichita (Riverside Health Hospital), Wichita, KS

DO: Kansas City College of Osteopathic Medicine (Kansas City University of Medicine and Bioscience), Kansas City, MO

“I liked cardiology since medical school and residency. I like doing surgical procedures, diagnosing and treating patients with cardiac issues. Cardiology has a wide variety of different tools.

“I treat my patients the way I would want to be treated as a heart patient. I have great compassion for people, and it’s important to me to teach them to understand their diagnoses and treatments.”

Michael J. Sarik, DO

Cardiology

Board-Certified: Cardiology, Cardiovascular Disease and Cardiac Electrophysiology, American Board of Internal Medicine

Fellow: American College of Cardiology

Fellowship-Trained: Cardiology, Thomas Jefferson University Hospital/Mercy Catholic Medical Center, Philadelphia, PA; Cardiac Electrophysiology, Deborah Heart and Lung Center, Browns Mills, NJ and Thomas Jefferson University Hospital, Philadelphia, PA

Residency: Mercy Catholic Medical Center, Darby, PA

DO: Philadelphia College of Osteopathic Medicine, Philadelphia, PA

Member: Heart Rhythm Society

“I was attracted to electrophysiology due to the mix of basic science, engineering and medicine. I enjoy working with pacemakers, defibrillators and implantable devices as well as troubleshooting therapy processes.

“I like getting to know the whole patient – their occupation, hobbies, interests, family members and more. I have a strong desire to know their whole story. My hope is to give each patient a safer, more comfortable life.”

Muhammad Al Sharif, DO

Cardiology

Board-Certified: Cardiology, American Osteopathic Board of Internal Medicine

Fellow: American College of Physicians

Fellowship-Trained: Mercy Heart and Vascular Institute, Mason City, IA

Residency: Internal Medicine, University of Toledo, Toledo, OH

DO: New York College of Osteopathic Medicine/New York Institute of Technology, New York City, NY

Member: American College of Cardiologists

“I entered this field because I wanted to expand my medical knowledge. I enjoy everything about the work and the patient interactions. I am a compassionate person who really wants to help people overcome illness. My goal is to provide the best possible care to each patient, along with a healthy dose of humanism.”

Timothy M. Dettmer, MD

ENT Otolaryngology

Advanced Training: Allergy

Board-Certified: American Board of Otolaryngology

Residency: Otolaryngology, University of Iowa Hospitals and Clinics, Iowa City, IA

MD: University of Iowa College of Medicine, Iowa City, IA

“As a medical student trying to decide which branch of medicine to pursue, I was exposed to ENT and immediately knew my future. For me, this specialty has the perfect combination of clinic time and operating room time. In the clinic, I get to know my patients and provide relief for many of them. Some patients require procedures in the operating room, and I find it so rewarding to help patients this way. The lifestyle of an ENT doctor isn’t overly stressful, so I have plenty of time to spend with my family and be involved in our community.

“I especially enjoy working in the Midwest, where I grew up. Being in healthcare, I get to make new connections with people every day. My goal is to always educate patients as much as possible. I want patients to know their diagnosis and different treatment options so they feel confident making informed decisions about their healthcare. I am blessed to have received excellent training and to be surrounded by great partners, too.”

Vishram Jalukar, MD

ENT Otolaryngology/Sleep Medicine

Fellowship-Trained: Otolaryngology – Head and Neck Surgery, University of Iowa, Department of Otolaryngology, Iowa City, IA

Residency: Otolaryngology, University of Iowa Hospitals and Clinics, Iowa City, IA

MD: Wayne State University School of Medicine, Detroit, MI

“I entered this field because I really enjoy the diverse and intricate anatomy, physiology and pathology of the head and neck region. I enjoy surgery – finding a problem, devising a plan to solve it and carrying out the plan.

“I am patient and diligent. It’s important to develop an understanding of the patient’s concerns and underlying problems so I can develop the appropriate means to address them in a healthy manner. This helps me develop good relationships with my patients and their families.”

Phillip C. Lee, MD

Otolaryngology and Sleep Medicine

Board-Certified: Sleep Medicine, American Board of Otolaryngology

Residency: Otolaryngology, University of Iowa Hospitals and Clinics, Iowa City, IA

MD: University of Iowa College of Medicine, Iowa City, IA

Member: American Academy of Otolaryngology – Head and Neck Surgery, American Rhinological Society, American Academy of Sleep Medicine, American Medical Association, Cerro Gordo County Medical Society

“I am a farmer at heart. But I was attracted to medicine and to surgery that can really help people get better. I like seeing patients improve between visits. I like helping children and grandchildren overcome their allergies and other ENT conditions.

“I treat patients as if they were my own family. I listen to them and engage them in the process of decision-making about their own healthcare. I give people hope and relief and the confidence that I will be with them for as long as they need me to get better.”

Henry R. Diggelmann, MD

Otolaryngology

Board-Certified: American Board of Otolaryngology

Residency: Otolaryngology – Head and Neck Surgery, University of Iowa Hospitals and Clinics, Iowa City, IA

MD: University of Iowa Carver College of Medicine, Iowa City, IA

Member: Iowa Academy of Otolaryngology, Iowa Medical Society

“With a background in music, I was naturally drawn to otolaryngology. In addition, I find both the mix of clinical and surgical practice, as well as the breadth of the field, very exciting. I enjoy treating some of the most common conditions, such as tonsillitis, but also being able to treat some of the more rare conditions in medicine. My focus during a clinic visit is to diagnose, then educate patients on the pathophysiology of their disease process. I want patients to develop a strong understanding of why their condition is occurring, which will better enable them to make informed decisions regarding their care.”

Satish K. Sondhi, MD

Gastroenterology

Board-Certified: Gastroenterology and Internal Medicine, American Board of Internal Medicine

Fellowship-Trained: Gastroenterology, University of Kentucky Medical Center, Lexington, KY

Residency: Internal Medicine, University of Kentucky Medical Center, Lexington, KY

MD: Rush Medical College, Chicago, IL

Member: American Gastroenterological Association, American College of Physicians, American Society of Gastrointestinal Endoscopy, American College of Gastroenterology, American Medical Association

“I enjoy interacting with patients and being in a specialty that has such a good balance between medical and surgical care and a breadth of procedures. I enjoy seeing patients in the office and the changing environment of treatment modalities for GI diseases and assessment.

“I learn so much from listening to the issues that concern patients and working through those issues systematically. I hope to give every patient the satisfaction that their problem is addressed, improved or resolved. It makes me feel good knowing that I have listened to my patients and provided care to the best of my ability.”

Manhal M. Tannous, MD

Gastroenterology

Board-Certified: American Board of Gastroenterology, American Board of Internal Medicine

Fellowship-Trained: Gastroenterology, Virginia Commonwealth University, Richmond, VA

Residency: Internal Medicine, Cleveland Clinic Health System, Cleveland, OH

MD: Damascus University Medical School, Damascus, Syria

Member: American Society of Internal Medicine, American Gastroenterology Association, American College of Gastroenterology, American Society for Gastrointestinal Endoscopy

“I have always had a special interest in gastrointestinal health and procedures. I like being able to make a difference in my patients’ health, and I enjoy interacting with patients. My goal is to deliver the best quality of care available, compassionately.

“I believe in giving patients the time and attention they deserve and carefully listening to them about their health issues. Patients appreciate the time I spend with them. They appreciate that I am well-trained in my field and use the most up-to-date procedures and techniques to provide comprehensive GI care.”

Byron T. Beasley, MD

Cardiology

Dr. Byron T. Beasley is a board-certified physician with additional qualifications in Cardiovascular Disease and Geriatrics, practicing within the Mercy Heart Center of Mason City Clinic since 1979. He previously served as President of the Medical Staff and Director of Cardiovascular Services at Mercy Medical Center. Utilizing his extensive experience and advanced technical skills, Dr. Beasley also serves as a Clinical Assistant Professor at the University of Iowa Hospitals and Clinics.

Dr. Beasley first completed his bachelor’s degree at St. Olaf College before graduating with his medical degree at the University of Iowa College of Medicine, where he was a member of the Alpha Omega Alpha medical honor society. His postgraduate training included a medical internship and residency at Indiana University Hospitals and a fellowship in Cardiology at the University of Iowa.

His work has also been published in leading medical publications. Dr. Beasley remains active in the medical community as a member of several professional organizations, including:

  • American College of Cardiology, Fellow
  • American College of Physicians, Fellow
  • American Heart Association, Fellow, Council of Clinical Cardiology
  • American Medical Society
  • American Society of Echocardiography
  • Cerro Gordo County Medical Society
  • Iowa Medical Society

He has also held many elected positions within these organizations, including on the Board of Directors of the American College of Cardiology and as a Board Member and past President of the American Heart Association Iowa Affiliate.

Brock J. Cookman, DO

Cardiovascular Disease

BOARD-CERTIFIED: Cardiovascular Disease, American Board of Internal Medicine

FELLOWSHIP TRAINED: Cardiology, University of Nebraska Medical Center, Omaha, NB

RESIDENCY: Internal Medicine, Des Moines, IA

DO: Des Moines University, Des Moines, IA

MSA: Des Moines University, Des Moines, IA

“The field of Cardiology allows me to interact with patients and families during many facets of their life. The ability to work with patients in the acute setting during a critical heart attack to the daily interactions in continuity clinics is something that very few fields in medicine can offer.

Cardiovascular medicine has been an ever changing landscape from the beginning of angiography in the 1950's to the current practice of percutaneous procedures including coronary and peripheral angioplasty and stenting to percutaneous valve replacements. The field of cardiovascular medicine affords the practitioner the opportunity to perform state-of-the-art minimally invasive procedures at the same time creating long-term relationships with patients.

The part I enjoy most about my profession is the patients. Every patient interaction is unique and it's the ability to personalize that experience that will lead to the best patient outcomes.

I believe my style of patient care would be considered patient-centered. My hope is to continue to advance the Heart and Vascular Center with state of the art procedures and treatments that are offered at larger medical centers across the country. Although I think treatment options are very important for patients, it is more important to create tailored treatment therapy for each individual patient. The patient is the center of every medical interaction and it is the preferences, needs and values that should guide the clinical interaction.

I hope to give my patients an individualized experience where they feel theirs and their family’s needs drive the interactions. The patients of the Heart and Vascular Center will have access to all of the state-of-the-art procedures that are performed at much larger medical institutions. “

Radu Hagau, MD

Cardiovascular Disease

BOARD-CERTIFIED: Internal Medicine, Cardiovascular Disease, Echocardiography, Nuclear Medicine and Vascular Ultrasound by the American Board of Internal Medicine

FELLOWSHIP-TRAINED: Cardiovascular Disease, St. Elizabeth’s Medical Center, Boston, MA;
Advanced Cardiac Imaging-Echocardiography, West Roxbury VAMC, Boston, MA

RESIDENCY: Internal Medicine, Memorial Hospital of Rhode Island, Pawtucket, RI

MD: University of Medicine and Pharmacy “Iuliu Hatieganu”, Romania

“I was raised in a family of physicians who early on fostered my desire to practice medicine. My grandfather and father were both cardiologists and I aspired to follow in their footsteps. I was fortunate to have such excellent mentors and learned to emulate their dedication and compassion towards patients. My fascination with the heart grew in my early medical training as I learned about its intricate physiology, multiple disease processes and emerging innovative treatments.

The foundation of my practice is based on well-developed physical exam and history taking skills with a goal of providing individualized, patient-centered care. I find cardiac imaging to be an integral part of this patient-centered care and have pursued training in cardiovascular imaging modalities including echocardiography, nuclear cardiology, peripheral vascular ultrasound and cardiac CT.

What I find most rewarding is helping a patient return to good health. I enjoy building a strong relationship with my patients and always try to treat them as if they were my own family. When I am not working my world revolves around my young family. We enjoy playing tennis, swimming and just spending time together.”

Denisa L. Hagau, MD

Cardiovascular Disease

BOARD-CERTIFIED: Internal Medicine, American Board of Internal Medicine

BOARD-ELIGIBLE: Cardiovascular Disease

FELLOWSHIP-TRAINED: Cardiology, St. Elizabeth’s Medical Center, Boston, MA

RESIDENCY: Internal Medicine, Memorial Hospital of Rhode Island, Pawtucket, RI

MD: University of Medicine and Pharmacy “Iuliu Hatieganu”, Romania

“I chose the field of cardiology because it is constantly evolving, challenging as well as extremely rewarding. I have always found it exciting to be able to care for the sickest patients and guide them back to health. What I find the most gratifying, however, is building a relationship with my patients over time; helping them understand their disease process and make the major lifestyle changes that truly lead to longer, healthier lives. I have found this is only achieved by listening closely to patient’s needs and concerns while working together as a team. It is truly an honor and privilege when patients put their trust in you to care for them. I strive to be the best doctor that I can be and take care of everyone as if they are my own family member.

I have a strong foundation in general cardiology including the management of coronary artery disease, atrial fibrillation, valvular heart disease, cardiac disease in women and cardiovascular risk reduction. My specific focus is non-invasive imaging including echocardiography, nuclear cardiology, peripheral vascular ultrasound and cardiac CT.

When I am not working, I find myself spending most of my time with my wonderful husband and our energetic toddler.”

Ronald F. Kloc, MD

Interventional Pain Management

Board Certified: American Board of Anesthesiology with Special Qualification in Pain Management

Residency: Anesthesiology, Medical College of Ohio, Toledo OH

DO: Chicago College of Osteopathic Medicine, Chicago, IL

Member: American Society of Interventional Pain Physicians, American Pain Society

“I started as an anesthesiologist but quickly learned that pain medicine was a new and emerging field. We have several new, effective methods of relieving or eliminating a patient’s daily pain. I can give my patients more hope for a better quality of life.

“I love it when my patients returned after a procedure and tell me they have no more pain. I helpthem understand why they have pain in the first place. It should never be a mystery. Everyday should not feel like drudgery.

“I hope to give each patient a much-improved, possibly pain-free life. I enjoy talking with patients and their families. Coming from a middle-class background, I find it easy to understand and empathize with the everyday concerns of others.”

In his spare time, Dr. Kloc is involved with the knights of Columbus, running and music.

Thomas J. Pfiffner, MD

Neurology

Board-certified in Neurology by the American Board of Psychiatry and Neurology, Dr. Thomas J. Pfiffner provides comprehensive neurology care and specializes in neuroimaging and neuro-oncology.

Dr. Pfiffner graduated from St. George’s University School of Medicine in Grenada, West Indies, with his medical degree. He went on to complete his postgraduate training including a Neurology residency at the University of Minnesota and fellowships in Neuroimaging and Neuro-Oncology at Roswell Park Cancer Institute and DENT Neurologic Institute.

Dr. Pfiffner has contributed to numerous publications and presentations regarding his research work in the field of Neuroimaging and Neuro-oncology. He is also actively involved with several professional organizations, including the American Academy of Neurology, American Society of Neuroimaging and Society for Neuro-Oncology.

Scott M. Donohoe, DPM

Podiatry

Dr. Scott M. Donohoe is a highly skilled and experienced podiatrist practicing at Mason City Clinic since 2005. He is certified by the American Board of Foot and Ankle Surgery.

Dr. Donohoe received his bachelor’s degree in Biology cum laude from Simpson College, then graduated with his podiaty  degree from Des Moines University College of Podiatric Medicine and Surgery, where he was a member of the Pi Delta National Honorary Academic Society. He then completed a rotating residency at SouthPointe Hospital and a two-year residency in Podiatric Surgery at Forest Park Hospital.

Outside of his training and practice experience, Dr. Donohoe is a member of the American Podiatric Medical Association, Iowa Podiatric Medical Association and American College of Foot and Ankle Surgeons. He has also authored and co-authored research papers that were published and presented at leading medical institutions.

Brian Olshansky, MD

Cardiovascular Medicine

Board Certified: Cardiovascular Medicine and Cardiac Electrophysiology, American Board of Internal Medicine

Fellow: American College of Physicians, American College of Cardiology, American College of Chest Physicians

Fellowship-Trained: Electrophysiology, Bellevue and New York University Hospitals, Birmingham, AL

Residency: Internal Medicine, Bellevue and New York University Hospitals, New York, NY

MD: University of Arizona, Tucson, AZ

Awards: Best Doctors in America, 1996 and 1997, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 and 2011

“I chose the field of cardiology because heart problems are critically important and challenging, but they are often correctable. I appreciate the complexity of cardiovascular challenges and the change to provide lifesaving care to my patients.

“My interactions with patients and their family are what I enjoy most about my practice. I love to work for the best interests of my patients and feel it is important to offer them options for treatment. My main goal is to give patients the opportunity for a longer and better life.

“Highly qualified skill is important to practicing cardiology, but caring and empathy are what I value most to ensure the best for my patients. I don’t consider patient care as a job… I do this work because I love it.”

Abdi E. Ahari, MD

General Surgery

Board-Certified: American Board of Surgery

Fellow: American College of Surgeons

Residency: General Surgery, University of Iowa Hospitals and Clinics, Iowa City, IA

MD: Uppsala University School of Medicine, Uppsala, Sweden

Member: Iowa Medical Society, Swedish Medical Association, Swedish Society of Medicine

“I’m attracted to the idea of being able to help people in a direct, hands-on fashion. I can make an impact on my patients’ outcome with surgical intervention and see immediate results. I also enjoy getting to know my patients.

“It’s about relieving suffering, saving lives and prolonging life. I’m a very detail-oriented person, which is ideal for a surgeon – because, as the saying goes, the devil is in the details.”

Harsha U. Jayawardena, MD

General Surgery

Board-Certified: American Board of Surgery

Fellow:

American College of Surgeons

Fellowship-Trained: Trauma and Critical Care, University of Maryland, Baltimore, MD

Residency: General Surgery, St. Agnes Hospital, Baltimore, MD; Emergency Medicine, East Surrey Hospital, Redhill, Surrey, UK

MD: University of Colombo, Sri Lanka

Member: Society of Critical Care Medicine, American Society of General Surgeons, Iowa Medical Society

“I believe in providing the best possible outcomes for my patients. My goal is to provide care using leading-edge surgical techniques that offer faster recovery and less invasive surgery for my patients. I take the time to explain the care that my patients will need and I am always available if they have questions. At the end of the day, their well-being is of utmost importance to me.”

Jeffrey K. Rowe, MD

General Surgery Advanced Training: Vascular Surgery

Board-Certified: American Board of Surgery

Fellow: American College of Surgeons

Residency: General Surgery, Hennepin County Medical Center, Minneapolis, MN

MD: University of Minnesota, Minneapolis, MN

Member: Society of American Gastrointestinal Endoscopic Surgeons, Iowa Medical Society

“Ever since middle school I have wanted to be a surgeon, to help people and to heal them from their disease processes or their injuries. I love being interactive with people and working with my hands – personally doing something that improves a patient’s life is incredibly satisfying. At this point in my career, I couldn’t be happier with what I do – general and vascular surgery – and how gratifying it is to help the people of Northern Iowa.

“I believe it is vital to treat my patients with dignity and respect, to listen to their issues and concerns at all times and show them that I care about them and have compassion for their problems as if they were members of my own family. It is a great responsibility and honor when a patient puts their trust in me and allows me to perform surgery on them. Surgery may be routine to me but not for my patients. I want them to know that I take this responsibility very seriously and expect nothing but perfection out of myself so that they get the best result possible from their surgery.

“I love the bond I develop with my patients over the many visits I have with them. I enjoy teaching them about their disease and explaining to them in terms they understand how I can help them. It is incredibly rewarding to improve someone’s quality of life, to increase their ability to walk or to save their life by surgery I perform.”

Rajinder K. Verma, MD

Neurology Advanced Training: Sleep Medicine

Board-Certified: Neurology, American Board of Psychiatry and Neurology

Residency: Neurology, University of Kansas Medical Center, Kansas City, KS

Member: American Academy of Neurology, American Academy of Sleep Medicine, American Medical Association, Iowa Medical Society, Cerro Gordo Medical Society, National Headache Foundation

“Experience is my asset. I strive to provide sincere, compassionate and best-quality medical care possible to all my patients.”

Mark W. Mulkey, MD

Plastic, Hand and Reconstructive Surgery

Board-Certified: American Board of Surgery, American Board of Plastic Surgery

Fellow: American College of Surgeons

Residency: General Surgery, University of Iowa Hospitals and Clinics, Iowa City, IA; Plastic Surgery, University of Wisconsin Hospitals and Clinics, Madison, WI

MD: University of Nebraska College of Medicine, Omaha, NE

Member: American College of Surgeons, American Society of Plastic and Reconstructive Surgeons, Iowa Medical Society, Wisconsin Medical Society, Cerro Gordo County Medical Society

“I love the variety of procedures and the creative nature of this specialty. Every day brings new challenges and opportunities for victory over disease and deformity. On the reconstructive side, I enjoy helping people overcome difficult situations. On the cosmetic side, it’s about helping people improve their self-esteem.

“My patients are like family to me. They deserve world-class care with small-town flair. They deserve a surgeon who is skilled at visualizing the change needed to achieve their surgical goals. After all, if you can’t see it, you can’t fix it. I love what I do and my patients benefit from that.”

René F. Recinos, MD, PHD

Plastic, Hand and Reconstructive Surgery

Board-Certified: American Board of Plastic Surgery

Fellow: American College of Surgeons

Residency: Plastic Surgery, Medical College of Wisconsin, Milwaukee, WI

MD: University of Iowa College of Medicine, Iowa City, IA

PhD: Biochemistry, University of Iowa College of Medicine Medical Scientist Training Program

“I chose this field for several reasons. Plastic surgeons must be creative in solving problems. Plastic surgeons are innovators. We are often faced with unique problems that cannot be solved using conventional, cookie-cutter approaches. We can make a big impact on your quality of life.

“By restoring function to a patient’s injured hand, for example, we re-enable their ability to feed and dress themselves, drive a car or go to work – all the day-to-day activities most of us take for granted. Plastic surgeons get to work with all regions of the body, too. I get great satisfaction from helping injured people return to productive, happy lives.

“Having grown up in Mason City, I am happy to practice my profession here, too. I care about my patients. I have empathy toward them. I try to learn about their life circumstances. By understanding their situations, I am able to better direct their care. I believe this greatly increases the likelihood of the most successful outcomes.”

Edward S. Henrich, DPM

Podiatry

Board-Certified: American Board of Podiatric Surgery, American Board of Extremity Surgery

Fellow: American College of Foot and Ankle Surgeons

DPM: College of Podiatric Medicine, University of Osteopathic Medicine and Health Sciences, Des Moines, IA

Member: American Podiatric Medical Association, Iowa Podiatric Medical Society

“I enjoy podiatry and helping people with their foot and ankle problems. I enjoy working with people of all ages from Mason City and the surrounding communities, as well as local nursing homes and assisted-living facilities.”

Michael W. Crane, MD

Orthopaedic Surgery

Board-Certified: American Board of Orthopaedic Surgery

Fellow: American Academy of Orthopaedic Surgery, American Orthopaedic Society

Residency: Orthopaedics, Blodgett Memorial Medical Center, Grand Rapids, MI

MD: University of Illinois Rockford School of Medicine, Chicago and Rockford, IL

Member:

American Medical Society, Iowa Orthopaedic Society, Cerro Gordo County Orthopaedic Society

“I wanted to be a doctor since high school. I always liked fixing things. For me, surgery is the same, and orthopaedics allows me to care for children and adults of all ages. It’s very satisfying to help someone who was unable to walk due to an injury to walk again.

“My approach is straightforward and to the point. My best quality is being very good with my hands. My goal is to improve my patients’ function so they can enjoy a great outcome from surgery, in cases where surgery is necessary.”

Dr. GibbonsTimothy A. Gibbons, MD

Orthopaedic Surgery

Board-Certified: American Board of Orthopaedic Surgery

Fellowship-Trained: Orthopaedic Sports Medicine, University of Iowa, Iowa City, IA

Residency: Orthopaedic Surgery, University of Texas Medical Branch, Galveston, TX

MD: University of Iowa College of Medicine, Iowa City, IA

Member: American Board of Orthopaedic Surgeons, Iowa Medical Society, Iowa Orthopaedic Society, Cerro Gordo County Medical Society, Veterans of Foreign Wars

“I found orthopaedics to be the most fascinating area of medicine. I like the mechanical and human performance aspects of orthopaedics. I like that there are constant innovations to improve patient outcomes.

“I am relatively direct and to the point. I believe my role is to work for the patient and be the informed expert and advocate for the patient to help them and their family members make their most informed decisions. I hope to give my patients the best outcomes that are realistically possible for each individual.”

Dr. Gibbons is a retired military surgeon with 15 years of service in the U.S. Army. He served our country in the Iraq War and was awarded a Bronze Star for his service in the field. Tim is married with seven children. He spends his free time raising livestock and crops on a small farm south of Mason City. He is an active member of the Epiphany Parish. He is the founder of the Amateur Wrestling League and serves as an advisor to the Iowa High School Athletic Association through the Iowa Medical Society committee on sports medicine. He was appointed by the governor to the Iowa Athletic Trainers Board, where he served two years. He has done missionary work in Asia and Africa. He enjoys hunting, fishing and mountaineering, including climbing the highest mountains on three continents. Dr. Gibbons has been a long-time leader of the Mason City Clinic, serving on the board of directors for ten years, including being elected as vice president to the clinic. Dr. Gibbons was honored by the National Wrestling Hall of Fame as a “Great American” from Iowa in 2011.

Darron M. Jones, MD

Orthopaedic Surgery

Board-Certified: American Board of Orthopaedic Surgery

Fellow: American Academy of Orthopaedic Surgeons

Fellowship-Trained: Orthopaedic Sports Medicine, The Orthopaedic Specialty Hospital, Salt Lake City, UT

Residency: Orthopaedic Surgery, University of Iowa Hospitals and Clinics, Iowa City, IA

MD: University of Iowa College of Medicine, Iowa City, IA

Member: American Orthopaedic Society for Sports Medicine, Iowa Orthopaedic Society, Iowa Medical Society, Cerro Gordo County Medical Society

“I grew up in Iowa Falls, not far from here, and I have always cared about helping the people in our community. Whatever problem a patient sees me for is the most important problem for me to solve.

“I take pride in being a good listener and keeping an open mind with my patients. If you invest the time listening to patients, the diagnosis is often that much easier, and the patient feels heard. Beyond that, the main thing that I want for my patients is a good outcome and a fast recovery so they can return to the activities they enjoy most.”

Eric J. Potthoff, DO

Orthopaedic Surgery

Board-Certified: American Osteopathic Academy of Orthopaedics

Residency: Orthopaedic Surgery, Doctors Hospital of Stark County, Massillon, OH

DO: Kirksville College of Osteopathic Medicine, Kirksville, MO

Member: American Osteopathic Academy of Orthopaedics, American Academy of Orthopaedic Surgeons, Iowa Orthopaedic Society, Iowa Medical Society

“I was a mechanical/structural engineer before I went to medical school, and orthopaedics was the only field in medicine where that experience would be useful. We typically diagnose a structural problem in the body, then fix it if possible. The process does not drag on for an extended period without improvement in the patient’s mobility and quality of life.

“I love seeing patients smile. It gives me a sense of accomplishment. I will do my absolute best to help every patient understand their problem and treatment options and improve their quality of life.”

Richard E. Rattay, MD

Orthopaedic Surgery

Board-Certified: American Board of Orthopaedic Surgery, Certificate of Added Qualification in Surgery of the Hand

Fellowship-Trained: Orthopaedic Hand and Upper Extremity Surgery, University of Minnesota; Microvascular Surgery, Mayo Clinic, Rochester, MI

Residency: Orthopaedic Surgery, University of Missouri, Kansas City, MO

MD: University of Iowa College of Medicine, Iowa City, IA

Member: American Academy of Orthopaedic Surgeons, American Society for Surgery of the Hand

“I wanted to be a physician since I was very young. I was fascinated by the anatomy of bones, muscles, joints, tendons and nerves. I enjoy the diagnostic process and having the ability to dramatically change a patient’s life. I enjoy the interactions with patients and the fact that so many of the most complex hand and wrist problems are referred to me.

“I look at every patient without preconceived impressions or prejudice. I try to relate to each individual. I am from Mason City, so I try to connect with each patient in some way personally. I try to sense their emotional needs and direct my words and actions to help them feel more comfortable. My ultimate goal is affect their lives in a positive way – relieving their pain while improving their function and quality of life.”

Michael B. Scherb, MD

Orthopaedic Surgery

Board-Certified: American Board of Orthopaedic Surgery

Fellowship-Trained: Foot and Ankle Orthopaedics, Union Memorial Hospital, Baltimore, MD

Residency: Orthopaedics, Orlando Regional Medical Center, Orlando, FL

MD: University of Iowa College of Medicine, Iowa City, IA

“Orthopaedics is an exciting field with continual development of new treatments and technology. It gives me an opportunity to work with patients of all ages and perform a wide variety of procedures focused on different parts of the body. I enjoy the process of directly restoring function to another human being. I relish the continual refinement in surgical techniques and treatment methods for helping patients to a better quality of life.

“I give my patients ample opportunity to explain their problems, concerns and hopes, encouraging them to be active participants in their care and advocate for their own best health. It leads to good outcomes when patients are better-educated and more active in their own healthcare decisions. I’m a willing listener and tenacious about identifying the cause of a problems even when it is not readily apparent.

“Sometimes it takes a few visits to gather enough data and develop a good relationship with the patient to figure out the best way of helping them.”

Timothy L. Mulholland, MD

Urology

Board-Certified: American Board of Urology

Fellowship-Trained: Laparoscopy and Minimally Invasive Surgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK

Residency: Urology, William Beaumont Hospital, Royal Oak, MI

MD: University of Iowa College of Medicine, Iowa City, IA

Member: American Urology Association, American Association of Clinical Urologists, Endourologic Society, Iowa Urological Society, Iowa Oncology Research Association, North Central Cancer Treatment Group, Iowa Medical Society

“Urology is a surgical field where we treat a wide variety of problems and patients. We also get to develop good relationships with patients. I love the fact that we have so many good patients, doctors and nurses right here in our Mason City community and all the surrounding counties.

“I am dedicated to giving my patients world-class medical care. That’s why, through continuing education and skills development, I stay on the leading edge of urological treatment and help patients get the best possible results.”

Kevin R. Rier, MD

Urology

Board-Certified: American Board of Urology

Fellowship-Trained: Laparoscopy and Minimally Invasive Surgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK

Residency: Urology and Surgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK

MD: University of Iowa College of Medicine, Iowa City, IA

Member: American Urological Association, Iowa Urological Society, Iowa Medical Society

“I chose this specialty because it has a nice mix of clinical and surgical medicine. I like being able to definitively help people with specific urologic problems. I like treating cancer and kidney stones.

“I take time to explain treatments and options up front. Clear communication is important. Ultimately, I hope to give my patients relief from their pain or illness, evidence-based information and hope for a better future.”

Mark E. Lassise, MD

Psychiatry

Dr. Mark E. Lassise is board-certified in Psychiatry and Neurology, with additional qualifications in Addiction Medicine, and has treated patients at Mason City Clinic since 1997. With over 25 years of practice experience and extensive training, Dr. Lassise provides patients with state-of-the-art care for a wide range of conditions.

Dr. Lassise graduated with a Bachelor’s degree in Science from the University of Montana, followed by his medical degree from the University of Colorado College of Medicine. He then completed residency training in Psychiatry at the Mayo Graduate School of Medicine.

In addition to his duties within our clinic, Dr. Lassise also serves as a Consulting Psychiatrist at Mercy Medical Center-North Iowa, Medical Director of Mental Health Services at Mercy Medical Center North Iowa and Medical Director of Senior Life Solutions at Hancock County Memorial Hospital in Britt. He is part of the teaching faculty of the Family Practice Residency Program at the University of Iowa and Des Moines University College of Osteopathic Medicine.  Dr. Lassise remains active in several professional organizations, including:

  • American Psychiatric Association
  • American Association for Geriatric Psychiatry
  • American Society of Addiction Medicine
  • American College of Forensic Examiners, Diplomate
  • Iowa Psychiatric Society
  • Iowa Medical Society
  • Cerro Gordo Medical Society
  •  

Rogerio M. Ramos, MD

Psychiatry

Dr. Rogerio Ramos is a board-certified psychiatrist who has practiced in the mental health clinic at Mason City Clinic since 2009, as well as serving as Medical Director of Prairie Ridge Addiction Treatment Center and running a buprenorphine clinic for patients with addictions.

Dr. Ramos graduated with his medical degree from the Faculdade de Medicina da UFMG in Brazil, and then completed his initial residency training in Psychiatry at the Fundação Hospitalar do Estado de Minas Gerais. He came to the US in 2004 after a few years practicing as Medical Director of an Outpatient Psychiatric Clinic in Brazil, and completed additional residency training in Psychiatry at the Institute of Living/Hartford Hospital, where he served as Chief Resident. He then further advanced his training through a fellowship in Addiction Psychiatry at Yale University.

Throughout his training and practice experience, Dr. Ramos has participated in numerous research studies regarding emerging psychiatry treatments. His work has been published in leading medical journals, and presented at society meetings across the country. He is also a member of the American Psychiatric Association and the American Medical Association.

Christopher E. Adams, MD

Urology

Board-Certified: American Board of Urology

Residency: Urology, University of Iowa Hospitals and Clinics, Iowa City, IA

MD: Harvard Medical School, Boston, MA

Member: American Urological Association, Iowa Urologic Society

“I chose urology because it allows me many modalities for treating urological diseases, and offers the perfect combination of surgical and medical disciplines. I enjoy treating people of all ages and both genders, as well as urologic anatomy.

“I enjoy practicing clinical medicine and surgery in the same day. The patient-doctor relationship is of the utmost importance. A great physician must listen to patients carefully and help them advocate for themselves. I am a good listener with great compassion for my patients. I hope to give them the best possible urological care, clinically and surgically.”

Sandra Leticia Reis Crosara, MD

Infectious Diseases

Fellowship: Infectious Diseases, University of Nebraska Medical Cernter, Omaha, NE

Residency: Internal Medicine, University of Iowa Internal Medicine Program, Des Moines, IA Metro West Medical Center Interal Medicine Residency Program, Framingham, Massachusetts, ONucleo De Otorrino BH (Otolaryngology Residency), Belo Horizonte, Brazil, Biocor Insitute (Internal Medicine Residency), Nova Lima, Brazil

MD: Universidade Federal de Minas Gerais, Brazil

Member: American College of Physicians, Society of Healthcare Epidemiology, HIVMA and Infectious Diseases Society of America (IDSA)

“I chose ID as a specialty because it brings knowledge of a wide variety of diseases and public health issues. It touches the lives of people of all ages and from all geographic areas.

“I love having the opportunity to make a difference in the care of individual patients as well as work with a team of likeminded people in an organization as respected as Mason City Clinic. My style is to listen to people and educate them about treatments and options. I enjoy listening to people involved in care of patients, and to patients themselves. This helps me make a more accurate diagnosis and create a stronger commitment to treatment.

“I believe in patients’ ability to make decisions and to comply with treatment and self-care, to change their own lives with the help of a good healthcare team such as ours.”

In her spare time, Dr. Crosara enjoys hiking, swimming, scuba diving, reading fiction books, movies, and music.

 

To schedule your personal, one-on-one time with our highly credentialed physicians, please call Mason City clinic at 641.494.5200

Our Mission

Why more patients choose Mason City Clinic for all their specialized health needs

World-class care, close to home. That’s what people want. That’s what Mason City Clinic delivers. Mason City Clinic’s well-educated, highly credentialed and experienced physicians bring the latest technology and leading-edge procedures.

During the past 25 years, we have helped hundreds of thousands of people throughout the North Central Iowa region. Many of our doctors have Iowa and local ties to go with outstanding reputations in their respective fields. Each physician is supported by caring, helpful staff.

Patient Reviews

Our patients say it Best

"No more sour grapes about knee pain for me."

“I injured my knee as a teenager and had surgery. Then, as I got older, the pain returned and began affecting my routine and overall enjoyment of life. My doctor referred me to Darron Jones, MD, an orthopedic surgeon. After a thorough exam, he said...
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Mason City Clinic Physicians discuss a variety of patient medical and health issues with Timothy Flemming on monthly KGLO 1300 AM Radio Show

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