Brett Bernstein
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Brett Bernstein, MD, MBA

Internal Medicine, Gastroenterology

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About Me

Dr. Bernstein is Chief of Gastroenterology at Mount Sinai Beth Israel and Clinical Associate Professor of Medicine. He currently serves as Medical Director of GI Services for the Mount Sinai Health System. Following graduation from the Mount Sinai School of Medicine, Dr. Bernstein completed post-graduate training at Mount Sinai Beth Israel where he served as an internal medicine resident, chief medical resident, and gastroenterology fellow. He has served in numerous leadership roles over the course of his over 30-year career at MSBI including Director of Endoscopy, Program Director for the MSBI GI Fellowship, and Chief Quality Officer for Beth Israel Ambulatory Services. In 2009, he founded Eastside Endoscopy, the first Manhattan-based joint venture single specialty endoscopy center between Beth Israel and a large group of community-based voluntary gastroenterologists. Dr. Bernstein has served as Medical Director of Eastside Endoscopy since its inception. As Medical Director of the Provider Partners of Mount Sinai IPA from 2015-2016, Dr. Bernstein was instrumental in the development and implementation of a clinical integration program for over 3,000 in-house and community-based physicians in the Mount Sinai Health System. As a national thought leader in endoscopic quality, Dr. Bernstein serves as a board member of GIQuIC, the largest national registry for GI quality data and was elected Chair of the registry’s new clinical measures committee. Additionally, Dr. Bernstein serves as Co-chair of the Colonoscopy Quality Committee, NYC Colonoscopy Quality Initiative Cancer Prevention and Control Program (C5). He has numerous peer reviewed publications and most recently co-authored “Guidance for resuming GI endoscopy and practice operations after the COVID-19 pandemic” appearing in the September 2021 issue of Gastrointestinal Endoscopy.
ASSOCIATE PROFESSOR | Medicine, Gastroenterology
Hospital Affiliations
  • Mount Sinai Morningside
  • Mount Sinai Beth Israel
  • Mount Sinai Brooklyn
  • Mount Sinai Queens
  • The Mount Sinai Hospital
  • New York Eye and Ear Infirmary of Mount Sinai
  • Mount Sinai West