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Diagnostic Endoscopy CenterDiagnostic Endoscopy Center

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AI May Improve Your Colonoscopy Findings

State-of-the-art Artificial Intelligence (AI) technology assists our doctors with screenings.

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Beat the Trend. Get Screened at 45!

More Young Adults Are Getting Colon Cancer.

Schedule Your Colonoscopy Today

Celebrating Our Patient Experience Scores

Our Ratings Exceed National Averages

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El cáncer de colon se puede prevenir.

Realícese una prueba por su familia. Realícese una prueba por usted.

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Thank you, Stamford!

We're Honored to Serve You

How We're Keeping You Safe

Learn what steps we've added to keep you safe

Prevent Colon Cancer

Learn more about colonoscopies.

Request an Appointment

Fill out the form to request an appointment.

About Us

Learn more about our center.

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!

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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).

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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.

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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.

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Meet Our Physicians

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Andrew Antony Andrew Antony M.D. Henry Beecher Henry Beecher M.D. Priyanka Chugh Priyanka Chugh M.D. Robert Dettmer Robert Dettmer M.D. Jordan Goldstein Jordan Goldstein M.D. Neda Khaghan Neda Khaghan M.D. Scott Kramer Scott Kramer M.D. Darlene S. Negbenebor Darlene S. Negbenebor M.D. Neal J. Schamberg Neal J. Schamberg M.D. Alan E. Selkin Alan E. Selkin M.D. Cheng-Hung (Jordan) Tai Cheng-Hung (Jordan) Tai M.D. Stuart Waldstreicher Stuart Waldstreicher M.D., A.G.A.F., F.A.C.G. Felice R. Zwas Felice R. Zwas M.D.
4.8/5
4.8 /5
388 Reviews

Google
1.0/5
Oct 30, 2025
Google • Diagnostic Endoscopy Center

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.

Google
1.0/5
May 7, 2025
Google • Diagnostic Endoscopy Center

The doctor was great. The entire rest of the experience was negative stars. If I had a staff like this one I would fire each one. I walked in, and was immediately asked for photo ID and insurance card. I was told I had a balance due that had to be paid prior to the procedure. No hello. No how are you doing at 1 PM after a day of clear liquids, a bowel prep and then nothing by mouth prior to showing up here. I was a walking dollar sign. Taken back by the nurse who put an ipad between us and would not move my shirt cuff out of the way to see the id bracelet on my wrist, she stared at me until I did it myself. I was made to feel like an absolute nuisance to her day. The nurse anesthetist came in and said "I'll do your anesthesia, do you have any questions for me?" then shoved an ipad in my face to sign, with her body facing the way out. And I had no glasses to see what I was signing. No explanation of what she planned to do so and clearly in a rush to leave. When she came in, it seemed to move me into the procedure room, she stood at the head of the bed sighing and not speaking to me until the MD's (nurse or medical assistant) came in to actually pull the bed out of the waiting area. The nurse/medical assistant was the only person aside from the Doctor to look at me, smile, ask how I was doing. once in the procedure room the anesthesia person told me to roll on my side, said, "Okay, good night," and pushed the medication. She could not have been colder or less interested in patient interaction. After I was done I heard them talking about how they called or texted my husband and he wasn't responding. When someone finally came close enough for me to talk to them, I told them that he had not planned to leave the office and someone should go out to the waiting room. Sure enough 30 seconds later, there he was. My husband and I are both Doctors. This was the coldest, most hands off experience I have ever had in a procedure setting. The office manager should be ashamed of this staff.

Google
1.0/5
Apr 7, 2025
Google • Diagnostic Endoscopy Center

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.

Google
5.0/5
Nov 27, 2024
Google • Diagnostic Endoscopy Center

Very professional and friendly.

Google
5.0/5
Sep 16, 2024
Google • Diagnostic Endoscopy Center

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.

Google
5.0/5
Sep 14, 2024
Google • Diagnostic Endoscopy Center

Google
5.0/5
Sep 10, 2024
Google • Diagnostic Endoscopy Center

I had a fantastic experience at DEC. The staff was friendly and super efficient. I was in and out in an hour!

Google
5.0/5
Sep 9, 2024
Google • Diagnostic Endoscopy Center

Very courteous and professional. I felt at ease.

Google
5.0/5
Sep 9, 2024
Google • Diagnostic Endoscopy Center

Dr. Waldstreichwer and his team are amazing.

Google
5.0/5
Sep 9, 2024
Google • Diagnostic Endoscopy Center

Friendly, professional staff—from admin to nurses to doctors. I heartily recommend this practice.


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Diagnostic Endoscopy Center
778 Long Ridge Road ,
Stamford, CT 06902

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