Jon J. Ernstoff, M.D.



455 Lewis Avenue Ste 200

Meriden, CT 06451

Closed. Opens Thur at 8 AM
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  • Colon Cancer Screenings
  • IBD
  • Crohn’s Disease
  • Ulcerative Colitis
  • Acid Reflux/Heartburn,
  • Expert Endoscopy and Colonoscopy
  • Currently Accepting New Patients
  • Most Insurance Plans Accepted

Connecticut GI - Meriden

Gastroenterology in Meriden, CT

Connecticut GI - Meriden

455 Lewis Avenue

Ste 200

Meriden, CT 06451

Closed. Opens Thur at 8 AM


Connecticut GI - Wallingford

Gastroenterology in Wallingford, CT

Connecticut GI - Wallingford

850 North Main Street

Ext Building 2 B3

Wallingford, CT 06492

Closed. Opens Thur at 8 AM

Medical School

  • Universite de Catholique de Louvain 1972-1978 M.D.


  • MetroHealth Medical Center 1978-1982 Medicine


  • Rhode Island Hospital 1982-1984 Gastroenterology

Board Certifications

  • Internal Medicine
  • Gastroenterology


A wonderful doctor, experience, great bedside manner and truly cares about his patients. You don't find many doctors like him today.

E.M. Google

Physician and team are very pleasant and knowledgeable they take the time to make sure that you understand was going on and Physician after procedure see you and explained results

F.D. Google

Dr. Ernst off and his entire staff were kind, thoughtful, efficient and knowledgeable. I would highly recommend CT. Gastroenterology.

L.G. Google

A colonoscopy isnt high up on anyone's list of things to do, but Dr. Ernstoff and his staff were all amazing. The nurses were amazing Dr. Ernstoff was friendly and put up with my bad jokes. Great job all around!!!!

N.B. Google

Dr. Ernstoff and his staff provided exceptional treatment and followup care.

S.L. Google


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