Gastroenterology
David Hass, M.D.
Clinical Professor of Medicine, Yale University School of Medicine; Medical Director, PACT Gastroenterology Center; Director of Endoscopy, Yale New Haven Hospital Saint Raphael Campus
Dr. David J. Hass, MD, FACG, is a gastroenterologist with over 25 years of experience practicing in Hamden, CT, specializing in a broad range of gastrointestinal disorders. He treats conditions including pancreatic diseases, inflammatory bowel disease (Crohn's disease and colitis), small bowel disorders, liver and biliary tract diseases, Barrett's esophagus, GERD, celiac disease, eosinophilic esophagitis, irritable bowel syndrome, and hepatitis. Dr. Hass performs procedures such as capsule endos
25+
Years in Practice
Credentials
Board Certifications
- Gastroenterology
- Internal Medicine
Education & Training
- Weill Cornell Medical College — M.D., 2001
- Hospital of the University of Pennsylvania — Residency, Internal Medicine, 2002-2004
- Montefiore Medical Center/Albert Einstein College of Medicine — Fellowship, Gastroenterology, 2004-2007
Peer Recognition
- ACG — Fellow (FACG)
2026
- Castle Connolly — Top Doctor
2017-2026 (10 years)
Clinical Focus
Subspecialties
Conditions & Treatments
Practice Details
Hospital Affiliations
- Yale New Haven Hospital
- Bridgeport Hospital
Languages
English
Experience
25+ years in practice