James Lewis

Senior Fellow

James Lewis, MD, MSCE

  • Professor, Medicine, Perelman School of Medicine

James Lewis, MD, MSCE, is a Professor of Medicine and Epidemiology, a Senior Scholar in the Center for Clinical Epidemiology and Biostatistics, and Associate Director of the Inflammatory Bowel Disease program at the University of Pennsylvania’s Perelman School of Medicine. Dr. Lewis has been actively involved in clinical research related to inflammatory bowel diseases, medication safety, and optimizing medical therapies for more than 20 years. More recently, he has focused on the impact of diet on the gut microbiome and the course of inflammatory bowel disease. His work has been funded by the NIH, AHRQ, PCORI, CDC and numerous foundations and corporate sponsors. He is currently leading a multicenter clinical trial in more than 30 sites for treatment of Crohn’s disease using nutritional interventions. Dr. Lewis previously served as the Chair of the National Scientific Advisory Committee and as a member of the National Board of the Crohn’s & Colitis Foundation. He is currently the lead scientist for the Foundation’s IBD Plexus Research Collaborative and an Associate Editor for Inflammatory Bowel Diseases.

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