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MGA Gastrointestinal Diagnostic and Therapeutic CenterMGA Gastrointestinal Diagnostic and Therapeutic Center

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Named a 2026 Best Ambulatory Surgery Center by Newsweek

This recognition reflects our dedication to patient care, safety, and excellence in outpatient surgery.

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Named a 2025 Best Ambulatory Surgery Center by U.S. News & World Report

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Celebrating Our Patient Experience Scores

Our Ratings Exceed National Averages

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Beat the Trend. Get Screened at 45!

More Young Adults Are Getting Colon Cancer.

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Thank you, Metairie!

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How We're Keeping You Safe

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Prevent Colon Cancer

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About Us

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New Orleans’s Leading GI Specialists Dedicated to Patient Care

The gastroenterologists and staff at MGA Gastrointestinal Diagnostic and Therapeutic Center are dedicated to providing quality, affordable care to the greater New Orleans 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).

MGA Gastrointestinal Diagnostic and Therapeutic Center is skilled in performing a myriad of digestive procedures, including colonoscopy, esophageal dilation, flexible sigmoidoscopy, upper endoscopy and small bowel enteroscopy.

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For Your Visit

Our New Orleans gastroenterologists and staff at MGA Gastrointestinal Diagnostic and Therapeutic Center are committed to ensuring your experience with us is relaxed and worry-free, from your first office visit through your post-procedure follow-up. To assist us, we ask you read and comply with all guidelines.

We’re pleased to announce our partnership with StopColonCancerNow.com to help boost colon cancer screenings and prevention for residents in the Greater New Orleans area.

Patient Forms

At MGA Gastrointestinal Diagnostic and Therapeutic Center, your time is as valuable to us as it is to you. Upon scheduling your surgery, a member of our staff will provide you with the required forms to fill out.

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Insurance and Billing

MGA Gastrointestinal Diagnostic and Therapeutic Center accepts most major insurance. As a courtesy to you, we will bill your insurance carrier; however, we cannot tell you what your policy will cover.

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Tour Our Metairie Center

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Meet Our Physicians

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Richard Awtrey Richard Awtrey M.D. Howard I. Brenner Howard I. Brenner M.D. Kirk Campbell Kirk Campbell M.D. Vernon J. Carriere Jr. Vernon J. Carriere Jr. M.D. George E. Catinis George E. Catinis M.D. Julie C. Guider Julie C. Guider M.D. Brett Hymel Brett Hymel M.D. Abdul M. Khan Abdul M. Khan M.D. Rebekah (Becky) H. Lemann Rebekah (Becky) H. Lemann M.D. James D. Lilly James D. Lilly M.D. Mark J. Marino Mark J. Marino M.D. Herbert K. Mayer Herbert K. Mayer M.D. Scott D. Pollack Scott D. Pollack M.D. G. Richard Puente G. Richard Puente M.D. Sanjeeva T. Reddy Sanjeeva T. Reddy M.D. Gary (Taavi) Reiss Gary (Taavi) Reiss M.D. Charles G. Schibler, II Charles G. Schibler, II M.D. David R. Silvers David R. Silvers M.D. Mark J. Wegmann Mark J. Wegmann M.D.
4.9/5
4.9 /5
2,165 Reviews

Google
5.0/5
Feb 13, 2026
Google • MGA Gastrointestinal Diagnostic and Therapeutic Center Metairie

Doctor and staff were kind and professional.

Google
3.0/5
Feb 13, 2026
Google • MGA Gastrointestinal Diagnostic and Therapeutic Center

Absolutely loved the staff. They did everything they could to make me feel comfortable, but I really don't like the setup of the facility. When they called me to the back from the waiting room my husband was not allowed to come with me. Most facilities allow one guest to accompany you while you are in holding. When I arrived at the holding area, there was only a curtain separating me from the other patients. Men and women were mixed together. The man next to me kept bumping into me through the curtain because we were both trying to get undressed in this very small area. The facility has to be a HIPAA violation. I heard everything that was said to the patients on either side of me. I knew their addresses, if they had any kind of diseases, and their date of birth. The procedure itself was great and the staff was kind. Dr. Reiss was quick and informative about my procedure. Other than not being comfortable with the environment I was in everything else was fine. I don't think I will have another procedure at this facility. I'd rather have it at the hospital where there are actual rooms and you can have a lot more privacy.

Google
5.0/5
Feb 13, 2026
Google • MGA Gastrointestinal Diagnostic and Therapeutic Center Metairie

They almost always see me in a timely fashion. Kandi, Dr. Hymel’s assistant, is always prompt to respond to messages over the portal. Dr. Hymel is very professional.

Google
5.0/5
Feb 12, 2026
Google • MGA Gastrointestinal Diagnostic and Therapeutic Center Metairie

Google
5.0/5
Feb 12, 2026
Google • MGA Gastrointestinal Diagnostic and Therapeutic Center Metairie


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MGA Gastrointestinal Diagnostic and Therapeutic Center Selected for Newsweek’s 2026 Best ASCs List

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