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Assistant in Medicine/Gastroenterology, Massachusetts General Hospital 

Assistant Professor of Medicine, Harvard Medical School 

Core Faculty, Clinical and Translational Epidemiology Unit, Mongan Institute, Massachusetts General Hospital

Faculty, The Disparities Solutions Center

Faculty, Harvard Chan Microbiome for Public Health Center

Associate Member, Broad Institute of MIT and Harvard

Dr. Long H. Nguyen is a Physician Investigator and Core Faculty at the Mongan Institute, Assistant Professor of Medicine and Gastroenterology at the Massachusetts General Hospital and Harvard Medical School, an Associate Member of the Broad Institute of MIT and Harvard, and Faculty at the Harvard Chan Microbiome for Public Health Center. He previously attended the University of California, Los Angeles, followed by graduate studies at Stanford University where he obtained an M.D. in Medicine and M.S. in Epidemiology. He went on to complete a clinical and research fellowship in gastroenterology at MGH where he was mentored by Dr. Andrew T. Chan and Dr. Curtis Huttenhower.


He has since established his own independent research program focused on the dietary and lifestyle determinants of the microbiome with a particular interest in gut microbial communities and their role in colorectal cancer and inflammatory bowel disease, as well as racial and ethnic health disparities in GI disease and COVID-19. He is currently funded by an NIDDK K23 award, the American Gastroenterological Association's Research Scholars Award, and a Crohn's and Colitis Foundation Career Development Award.

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