James Lewis, MD, MSCE, is Professor of Medicine and Epidemiology, Senior Scholar in the Center for Clinical Epidemiology and Biostatistics, Chief of Gastroenterology at Penn Presbyterian Medical Center, Associate Director of the University of Pennsylvania’s Inflammatory Bowel Disease Program, and Director of Clinical Research in the Division of Gastroenterology and Hepatology at the University of Pennsylvania’s Perelman School of Medicine. He serves as the director of the Human Research Core of Penn’s Center for Nutrition Science and Medicine. He is currently the lead scientist for the Crohn’s & Colitis Foundation’s IBD Plexus Research Program.

For more than 25 years, Dr. Lewis has been actively involved in 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, and numerous foundations and corporate sponsors. His research has employed a wide range of methods, including clinical trials, controlled feeding studies, observational studies using administrative data, prospective cohort studies, and decision modeling.

In 2016, Dr. Lewis received the Sherman Prize for Excellence in Crohn’s and Colitis.