John C, Byrn, M.D is a Clinical Associate Professor of Surgery in the Division of Colorectal Surgery. He graduated from Hope College with a B.A. in Chemistry and received his MD degree from the University of Illinois-Chicago College of Medicine. He trained in general surgery at Mount Sinai School of Medicine in New York, NY. Dr. Byrn went on for his Colon and Rectal residency at the Cleveland Clinic, Cleveland, OH. Dr. Byrn was a Clinical Assistant and Associate Professor of Surgery at the University of Iowa Hospitals and Clinics from 2009-2015 and served as the Chief of the Section of Colorectal Surgery from 2013-2105.