Peter S. Liang, MD, MPH, is an Assistant Professor of Medicine and Population Health at the NYU Grossman School of Medicine and an attending gastroenterologist at the VA New York Harbor Health Care System Manhattan Medical Center. 

Dr. Liang completed his undergraduate degrees in Biological Sciences and East Asian Studies with honors and distinction at Stanford University and was a Fulbright Fellow in China. He attended Harvard Medical School and earned a master’s in public health in Quantitative Methods at the Harvard School of Public Health. He completed his internal medicine residency at Brigham and Women’s Hospital and his clinical gastroenterology and T32 research fellowship at the University of Washington.  

Dr. Liang’s primary research interest is colorectal cancer prevention. He studies sociodemographic and geographic disparities in colorectal cancer screening and outcomes, the comparative effectiveness of different screening strategies, novel methods to increase screening adherence, and early-onset colorectal cancer. His research has been supported by the National Cancer Institute, National Institute on Minority Health and Health Disparities, American Gastroenterological Association, American Society for Gastrointestinal Endoscopy, New York Society for Gastrointestinal Endoscopy, ReMission Foundation, and industry. 

Dr. Liang serves as Chair of the World Endoscopy Organization Coalition to Reduce Inequities in Colorectal Cancer Screening. He also serves on the AGA Clinical Guidelines Committee, ACG International Relations Committee, the National Colorectal Cancer Roundtable Membership Committee, and the New York Citywide Colorectal Cancer Control Coalition (C5) Steering Committee and Screening Guidelines Committee. He previously chaired the AGA Trainee and Early Career Committee and has served on the AGA Publications Committee, ASGE Annual Scientific Program Committee, and ACG International Relations Committee.