Physician Assistant

Allison Bitter, PA-C

Orthopaedics

Allison completed her Bachelor of Science degree from the University of Northern Iowa, in Cedar Falls, IA, in May of 2018, followed by the completion of her Masters in Physician Assistant Studies degree in December of 2020, from the University of Dubuque, in Dubuque, IA.

A native of Dubuque, Iowa, Allison chose to pursue a career in medicine because she’s always been drawn to helping others. Orthopedics has become her specialty due to its hands-on nature. She enjoys the continual learning that accompanies working in the ever-changing world of medicine as it challenges her to never become complacent.

Chad Boyer, PA-C

Orthopaedics

Chad Boyer is a certified physician assistant who joined our staff at Mason City Clinic in 2007. Chad practices general orthopaedic medicine, including seeing patients in the clinic, performing minor surgical procedures, surgical assist, inpatient care and on-call services – under the supervision of the orthopaedic surgeons at Mason City Clinic.

Mr. Boyer graduated magna cum laude with a biology premedicine degree and LaSallian Honors minor from St. Mary’s University of Minnesota. He subsequently obtained a master’s degree in physician assistant studies from the University of Iowa, with classes and training at Carver College of Medicine. In addition to clinical practice, Chad has been a preceptor for PA students, medical students and family medicine residents. He is a member of Physician Assistants in Orthopedic Surgery, American Academy of Physician Assistants and Iowa Physician Assistant Society.

Robert Giles II, PA-C

Orthopaedics

Robert received his bachelor’s degree in biology, psychology and health sciences with a concentration in microbiology from East Tennessee State University in Johnson City. He went on to complete his master’s degree in the physician assistant program at Lincoln Memorial University in Harrogate, TN.

In his free time, he enjoys kayaking, traveling and spending time with family and friends.

Shawn Janssen, PA-C

Plastic and Reconstructive Surgery

Shawn is a board-certified physician assistant who graduated from Des Moines University’s physician assistant program in 1990. She has over 20 years of experience in patient care working in obstetrics and gynecology, family practice medicine, general surgery and finally plastic surgery. During the past 12 years, Shawn has been a valued provider in the Department of Plastic and Reconstructive Surgery. Shawn’s involvement in the practice has included first assisting in surgery, taking calls and holding outpatient clinic hours to help meet the needs of our patients. As a well-qualified team member, she enhances efficiency and safety in the operating room and provides a qualified and uniform extension of the care Dr. Mulkey and Dr. Recinos provide.

Shawn’s experience, gained by assisting in the operating room for many years, allows her to efficiently coordinate postoperative care in her clinics. She is skilled in total body screening for skin cancer and benign lesions. She is well-versed in the initial workup and nonoperative management of hand conditions such as carpal tunnel syndrome, ganglions and trigger finger.

Shelby Lehmann, PA-C

Shelby completed her Bachelor of Arts in Biology and Neuroscience from the Coe College, in Cedar Rapids, IA, in May of 2018, followed by the completion of her Masters in Physician Assistant Studies degree in December of 2020, from St. Ambrose University, in Davenport, IA.

Shelby loves connecting with patients and helping them find the best solutions for not only their health, but lifestyle and life goals. She finds impacting the lives of others in a positive way to be extremely rewarding.

Stacey Lester, PA-C

Plastic and Reconstructive Surgery

Stacey joined the Mason City Clinic Department of Plastic and Reconstructive Surgery in 2018 after graduating from Des Moines University with a Master of Science degree in physician assistant studies.

Her experience includes working as a hospital corpsman in the US Navy and assisting with oral and maxillofacial surgery.

Stacey is a member of American Academy of Physician Assistants and is certified by the Nation Commission on Certification of Physician Assistants.

In her free time, Stacey enjoys spending time with her family, being outside and working on home renovations.

Matt McBride, PA-C

Orthopaedics

Matt earned his Bachelor of Science degree in biology summa cum laude from the University of Northern Iowa, Cedar Falls and his Master of Science degree in physician assistant studies from the University of Iowa, Iowa City. He is certified by the National Commission on Certification of Physician Assistants and CPR/first aid. He is a current member of the American Academy of Physician Assistants and Iowa Physician Assistant Society.

Matt joined the Mason City Clinic Orthopaedics Department as a physician assistant in 2004. He is married and has two children. Matt stays busy volunteering at Newman Catholic High School as a team physician in football and as an assistant wrestling coach. He enjoys golfing and is an active member of Epiphany Parish in Mason City.

Jennifer McCambridge, PA-C

Cardiology

Jennifer is a board-certified physician assistant who graduated from the Midwestern University physician assistant program in 2000. She has over 14 years of experience in patient care, working primarily in cardiac medicine. During the past 12 years, Jennifer has been a valued provider in the Cardiology department. Her involvement in the practice has included monitoring cardiac stress tests, formulating treatment plans for inpatients and holding outpatient clinic hours to help meet the needs of our patients. Currently, her focus in the outpatient cardiology setting is on the treatment of heart failure.

Amy Polson, PA-C

Amy completed her Bachelor of Arts in Health Sciences from Colorado Christian University, in May of 2013, followed by the completion of her Masters in Physician Assistant Studies degree from the University of Nebraska Medical Center, in December of 2018.

Amy chose a career in medicine to help people be happy and healthy. “Caring for patients allows me to use my gifts and abilities to help people in a surgical setting, but also to get to know and follow patients in a clinical setting,” she said. “Working in bariatric surgery the past two years has also allowed me to understand the impact of obesity on our society and help patients take steps to improve their health and quality of life.”

Christopher Randall, PA-C

Orthopedics

Christopher earned his Bachelor of Science Degree in Biology at the University of Colorado in Colorado Springs, Colorado. He continued his education at the University of Nebraska Medical Center in Omaha, Nebraska where he earned his Maters in Physicians Assistants Studies and is certified by the National Commission on Certification of Physician Assistants.
Christopher went into medicine because he enjoys being able to positively contribute towards the live of his patients as well as getting to know them and their stories.

Kyle Ryan, PA-C

Orthopaedics

Kyle received his bachelor’s degree in pre-professional zoology from Northwest Missouri State University. He went on to Des Moines University, where he received a degree in physician assistant studies after which he joined the Mason City Clinic Orthopaedics department.

Kyle enjoys treating a wide variety of conditions throughout the 14-county service area as well as working in the clinic and performing minor procedures as well as assisting the physicians with their various surgical procedures.

Katie Weishaar, PA-C

Orthopaedics

Katie earned her Bachelor of Science degree in biology and her Master of Science degree in physician assistant studies from the University of Detroit, in Detroit, Michigan. She is certified by the National Commission on Certification of Physician Assistants. In her free time, Katie enjoys reading, running and travel.