Dean Chang, MD

Dr. Chang practices in our Hamden Office. He is affiliated with Yale-New Haven Hospital/Saint Raphael Campus, Milford Hospital, Midstate Medical Center, Masonic Geriatric Hospital and Yale New Haven Hospital.


  • Practices in Hamden


  • Reflux / Barret's Esophagus /GERD *
  • Celiac Disease *
  • Crohn's and Colitis
  • Colorectal Cancer Screening
  • Diseases of a Small Bowel
  • Eosinophilic Esophagitis
  • Irritable Bowel Syndrome
  • Pancreatic Disease
  • Liver Disorders/Hepatitis *

*special interest

Dr. Chang was born in Taipei, Taiwan and attended Johns Hopkins University in Maryland where he graduated with a Bachelor of Arts Degree in Chemistry. He then received his M.D. and Ph.D. from the University of Michigan Medical School. From there, he completed his internship and residency in Internal Medicine and his Gastroenterology fellowship at the Yale University School of Medicine.

Dr. Chang joined GCC in 1999 and his special interests include colon cancer, liver disease, inflammatory bowel disease and diarrheal illness.



  • Doctor of Medicine, 1990, University of Michigan Medical School
  • Bachelor of Arts in Chemistry, 1986, Johns Hopkins University


  • Board Certified Gastroenterology, 1995, 2011
  • Board Certified Internal Medicine, 1999


  • Clinical Fellowship, 1993-1996, Department of Digestive Diseases
  • Yale University School of Medicine, Internal Medicine Residency, 1990-1993, Yale University School of Medicine, Yale-New Haven Hospital


  • American Gastroenterological Association
  • New Haven County Medical Association