Gastroenterology
Blair Lewis, M.D.
Clinical Professor of Medicine, Gastroenterology, Icahn School of Medicine at Mount Sinai
Dr. Blair S. Lewis is a board-certified gastroenterologist practicing in New York City, renowned for his expertise in endoscopy, particularly as the 'father' of capsule endoscopy, where he served as primary investigator in early clinical trials. He specializes in diagnosing and treating a wide range of gastrointestinal conditions, including gastroesophageal reflux disease (GERD), colonic polyps, inflammatory bowel disease (IBD), celiac disease, constipation, and intestinal diverticulosis. His pr
40+
Years in Practice
Credentials
Board Certifications
- Gastroenterology (American Board of Internal Medicine)
- Internal Medicine (American Board of Internal Medicine)
Education & Training
- Albert Einstein College of Medicine — M.D., 1982
- Montefiore Medical Center — Residency, Internal Medicine, 1983-1985
- Mount Sinai Hospital — Fellowship, Gastroenterology, 1985-1987
Peer Recognition
- Castle Connolly — Top Doctor
2002-2026 (25 years)
Clinical Focus
Subspecialties
Conditions & Treatments
Practice Details
Hospital Affiliations
- Mount Sinai Queens
- Mount Sinai Hospital
Languages
English, Spanish
Experience
40+ years in practice