James Lewis, MD, MSCE, is Professor of Medicine and Epidemiology in the Division of Gastroenterology and Hepatology at the University of Pennsylvania’s Perelman School of Medicine. He is a Senior Scholar in the Center for Clinical Epidemiology and Biostatistics, Chief of Gastroenterology at Penn Presbyterian Medical Center, Vice-Chief for Research (clinical) in the Division of Gastroenterology and Hepatology, and Director of the NIH-funded T32 Training Grant in GI Epidemiology. He serves as the director of the Human Research Core of Penn’s Center for Nutrition Science and Medicine and co-director of the Biomedical Data Science Core in the Center for Molecular Studies of Gastrointestinal and Liver Disease.  

Dr. Lewis conducts clinical research related to inflammatory bowel diseases and other gastrointestinal diseases with goal of improving patients’ outcomes by optimizing the use of medical therapies, diagnostic tests, and nutrition. His work has been funded by the NIH, AHRQ, PCORI, CDC and numerous foundations and corporate sponsors. He is currently the lead scientist for the Crohn’s & Colitis Foundation’s IBD Plexus Research Program and co-PI of the SPARC IBD cohort study. 

Dr. Lewis has been recognized for his excellence in research, teaching and clinical care. He is an elected member of the American Society for Clinical Investigation, the Association of American Physicians and the International Organization for the Study of Inflammatory Bowel Disease. He is a recipient of a Sherman Prize for Excellence in Crohn’s and Colitis research, the Crohn’s and Colitis Foundation’s Achievement in IBD Clinical Science Award, and the American Gastroenterological Association Distinguished Educator Award. He has been named as one of Philadelphia’s Top Doctors.