Meet Ohio State's team of colon and rectal surgery experts

The Division of Colon and Rectal Surgery at The Ohio State University Wexner Medical Center houses a comprehensive team of surgeons and staff, all focused on delivering high-quality patient care, contributing to research and innovations in medicine and educating medical students and postgraduate trainees. Our surgeons are high-volume providers who have experience managing the most unusual and complex surgical cases. 

Our Leaders

Our leaders

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Mark Arnold, MD

Director, Division of Colorectal Surgery

Professor of Clinical Surgery

Vice Chairman for Surgical Education, Department of Surgery


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Our Faculty

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Mark Arnold, MD

Professor-Clinical Director, Colon and Rectal Surgery
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Alan Harzman, MD

Associate Professor Program Director, Surgery Residency
Current Colorectal Surgery Resident

Current Colorectal Surgery Resident

Jason Weiss, MD

MD: University of Iowa Carver College of Medicine, Iowa City
Specialty training: Residency in General Surgery, Banner Good Samaritan Medical Center, Banner – University Medical Center Phoenix, Phoenix Integrated Surgical Residency
Fellowship training: Colorectal Research and Anophysiology 2015 - 2016; Colorectal Surgery Fellowship, The Ohio State University Wexner Medical Center, Columbus