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Shivi S. Siva, MD

Shivi S. Siva, MD

Internal Medicine

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

Fellowship-Trained: Gastroenterology, Graduate Hospital, Philadelphia, PA, Indiana University, Indianapolis, IN, and London Deanery University of London, UK; Inflammatory Bowel Disease, University of Chicago, Chicago, IL

Residency: Internal Medicine, Pennsylvania Hahnemann University Hospitals, Philadelphia, PA

MD: Ross University, Dominica, West Indies

Member: Crohn’s and Colitis Foundation

“I was drawn to gastroenterology through a desire to help patients, engage in academic pursuit and have a career that would enable me to pursue these interests while interacting with various disciplines in medicine, surgery and nutrition.

“The field of gastroenterology offers cutting-edge procedures, office-based practice to diagnose and treat a variety of clinical conditions and also an opportunity to pursue research studies.

“Shared decision-making is a key component of my patient-centered practice. I engage the patient in a process in which the patient and I work together to make decisions and select tests, treatments and care plans. This teamwork is based on clinical evidence that balances risks and expected outcomes with patient preference and values. Patients once engaged in shared decision-making will learn about their clinical conditions and will be informed of their treatment options. The patients will be educated on benefits and harms of these treatment modalities. They will be given educational tools to help guide them to evaluate each option and be better-prepared to discuss care with me, their healthcare provider.

“When I engage patients in shared decision-making, it improves their trust and satisfaction with the care I provide them. This process builds a foundation for a long-lasting and satisfying relationship between the patient and me.

“I am an active physician member of the Crohn’s and Colitis Foundation. I organize annual patient education seminars to benefit patients and family members with Crohn’s and colitis living in Iowa.

“I am actively involved in teaching and research studies with the medical trainees who rotate through our gastroenterology service.”



Siva S, Dachman A, Baad M, Tulis T, Ashman A, Wroblewski K, Gulotta G, Rubin DT, Pekow J. Visceral Adipose Tissue Volume Does Not Predict Post-operative Disease Recurrence After Ileocecectomy in Patients With Crohn’s Disease, ACG 2016

Siva S, Rubin DT, Pekow J. Ulcerative Colitis Patients with Zinc Deficiency Are at Higher Risk for Disease-related Complications, Amsterdam, ECCO 2016

Siva S, Rubin DT, Pekow J. Zinc Deficiency Is Associated with Increased Disease-Related Morbidity in Crohn’s Disease Patients, Amsterdam, ECCO 2016

Siva S, Rubin DT, Kahn S. A Multi-disciplinary approach to Complex upper GI Crohn’s disease in a teenager, AIBD 2015

Siva S, Fischer M, Fadda H. Red blood cells and White blood cells Methotrexate Polyglutamate levels in Crohn’s disease, AIBD 2014

Fadda H, Siva S, Fischer M. Assessment of the Disease Activity of Activity of Inflammatory Bowel Disease on the Outcome of Small Intestinal Transit Times Using Video Capsule Endoscopy, ACG 2014

Siva S, Ashraf W. Capsule Endoscope (CE) – Is it a safe procedure? World Congress of Gastroenterology, September 2005, Canada Original


Siva S, Rubin DT, Wroblewski K, Gulotta G. Zinc deficiency is associated with poor clinical outcomes in patients with inflammatory bowel disease, Inflammatory bowel disease, (in print).

Fadda H, Siva S, Fischer M, Wo JM. Assessment of small intestinal transit times in ulcerative colitis and Crohn’s disease patients with different disease activity using video capsule endoscopy, AAPS PharmSciTech. March 2016. PMID: 27032935

Fadda H, Siva S, Cook, GK, Jones DR, Fisher M. Methotrexate polyglutamate monitoring in patients with Crohn’s disease, Clinical Pharmacology in Drug Development. June 2016. PMID: 27274011 Review Siva S, Pereira SP. March 2007, “Acute Pancreatitis,” Medicine, Volume: 35, Issue: 3, Pages 171-177

Book Chapter

Pereira SP, Siva S. April 2008, “Chronic Pancreatitis: Pancreatic diseases, the challenges,” (Elsevier)”

To schedule your personal, one-on-one time with Dr. Siva, please call Mason City Clinic at 641.494.5200 or use our online Request an Appointment form. We welcome patients from Albert Lea, Algona, Charles City, Iowa Falls, Mason City, New Hampton and neighboring locations.

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