Renuka Umashanker, MD, FACG

Dr. Umashanker practices in our Hamden, Guilford and Milford Offices. She is affiliated with Endoscopy Center of Connecticut, Yale New Haven Hospital (Yale & St. Raphael Campus) as well as Bridgeport Hospital - Milford Campus.


  • Practices in Guilford
  • Practices in Hamden
  • Practices in Milford


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

*special interest


Dr. Umashanker was born in India and raised in New York City. She attended Hunter College in New York where she received her Bachelor of Arts Degree in Chemistry and Psychology. She then received her M.D. from State University of New York at the Health Science Center in Brooklyn. After that, she completed her Internal Medicine residency and fellowship in Gastroenterology at Robert Wood Johnson Medical Center – UMDNJ.

Dr. Umashanker joined GCC in 1998 and served at the Chief of Gastroenterology at Milford Hospital from 2003-2004. Her special interests include colorectal cancer management, women's issues in gastroenterology, Hepatitis C along with other liver diseases and general gastrointestinal diseases.


  • Doctor of Medicine, 1992, Health Science Center Brooklyn, State University of New York
  • Bachelor of Arts in Chemistry and Psychology, 1988, Hunter College


  • Board Certified Gastroenterology, 1998, 2008
  • Board Certified Internal Medicine, 1996


  • Clinical Fellowship, 1997-1998, Beth Israel Deaconess Medical Center, Harvard Medical School
  • Clinical Fellowship, 1995-1997, University of Vermont
  • Internal Medicine Residency, 1992-1996, Robert Johnson Medical Center, University of Medicine and Dentistry of New Jersey


  • American College of Gastroenterology
  • American Gastroenterological Association
  • American Society for Gastrointestinal Endoscopy
  • American Medical Association
  • American Liver Foundation