Patient Finds Answers Through Timely GI Evaluation at ASC
Discover how one patient found answers for chronic digestive issues at an ambulatory surgery center (ASC).
Stamford’s Best GI Doctors
Our gastroenterologists and staff at Diagnostic Endoscopy Center are dedicated to providing quality, affordable care to the community in our quest to lower colon cancer rates and treat an array of digestive diseases, including Crohn’s Disease, irritable bowel syndrome (IBS) and gastroesophageal reflux disease (GERD).
We believe in compassionate medicine, where patients feel reassured and unrushed. We hold ourselves to the highest of standards, as our center is accredited by the Accreditation Association for Ambulatory Health Care (AAAHC).
Our board-certified GI doctors specialize in a myriad of GI procedures, including colonoscopy, flexible sigmoidoscopy and upper endoscopy.
If you are due for a colonoscopy or in need of a GI procedure, don’t put it off any longer. Give us a call today!
For Your Visit
Diagnostic Endoscopy Center is committed to ensuring that your experience with us is relaxed and worry-free, from consultation through recovery. To assist us, we ask that you read and comply with all guidelines.
We’re pleased to partner with StopColonCancerNow to help boost colon cancer screenings and prevention for residents in Fairfield County.
Patient Forms
At Diagnostic Endoscopy Center, your time is as valuable to us as it is to you. That’s why we provide online access to a variety of forms that patients may complete before their visit. Please take a moment to download and print the appropriate form(s).
Insurance and Billing
Diagnostic Endoscopy Center accepts most major insurance. We will bill your insurance carrier for you; however, we cannot tell you what your policy will cover. Since your insurance policy and coverage are between you and your carrier, we urge you to contact them prior to your procedure.
Artificial Intelligence
Diagnostic Endoscopy Center has integrated state-of-the-art Artificial Intelligence (AI) technology to enhance the precision and effectiveness of our colonoscopy procedure. This AI system digitally analyzes real-time video feeds, assisting our gastroenterologists in identifying polyps.
Meet Our Physicians
View All Physicians
Andrew Antony
M.D.
Henry Beecher
M.D.
Priyanka Chugh
M.D.
Robert Dettmer
M.D.
Jordan Goldstein
M.D.
Neda Khaghan
M.D.
Scott Kramer
M.D.
Darlene S. Negbenebor
M.D.
Neal J. Schamberg
M.D.
Alan E. Selkin
M.D.
Cheng-Hung (Jordan) Tai
M.D.
Stuart Waldstreicher
M.D., A.G.A.F., F.A.C.G.
Felice R. Zwas
M.D.
355 Reviews
Oct 30, 2025
Apr 7, 2025
Terrible billing practices. Staff maybe nice but the billing is awful. They are very aggressive in getting paid upfront for the facility fee of a few hundred dollars which my insurance covered as I had already met my deductible. So they were double paid, and took me months to get my money back. Would not listen to me when I told them I was covered by my insurance.
Sep 16, 2024
Diagnostic Endoscopy Center is an outstanding facility. The entire team is fantastic, from the warm and welcoming professionals at check-in to the knowledgeable, compassionate and highly skilled nurses caring for you before, during and after your procedure. The Anesthesiologist is also wonderful. As a first timer, I was very nervous and she went out of her way to calm my nerves and explain exactly what was going to happen. Dr. Schamberg, my Gastroenterologist, is the absolute best - a masterful practitioner who is patient, kind, and takes the time to ensure you feel comfortable, informed and prepared. I have already recommended Diagnostic Endoscopy Center and Dr. Schamberg to family and friends and will continue to do so.
Sep 10, 2024
I had a fantastic experience at DEC. The staff was friendly and super efficient. I was in and out in an hour!
Sep 9, 2024
Friendly, professional staff—from admin to nurses to doctors. I heartily recommend this practice.
Sep 7, 2024
Not impressed with anesthesia RN too drowsy waking up Food choices like muffin and something else forgot were very poor highly processed food you want to stay away from
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Doctor's office was in a nice building. It is a shame because the front desk, who acts as the face of the establishment treated my grandparents horribly. They are hispanic, but speak english and felt very disrespected with their tone. They also do not keep their front desk clean, it was dirty/greasy. They made the overall experience of how great the actual medical staff overshadowed by the horrible front desk. For a center that claims that they care about their patients, their front desk staff is the absolute worse. I would not advise the facility to anyone who is elderly, not native english speaking- or generally anyone, until management reconsiders their front staff.