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Gastroenterologist in Mansfield, TX

Gastroenterology • Mansfield, TX

About

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GI Alliance: Mansfield, TX is a gastroenterology practice located at 647 North Miller Road, Suite 200, in Mansfield, Texas. The clinic offers gastroenterology services including chronic care management, colon cancer screening, infusion therapy, pediatric gastroenterology, virtual telemedicine, and clinical trials for conditions such as Crohn's disease, ulcerative colitis, and GERD.

Clinic Type

Gastroenterology

Address

647 North Miller Road, Suite 200, Mansfield, TX 76063

Phone

817-760-7969

Email

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Opening Hours

Monday – Thursday 8:00 AM – 5:00 PM; Friday 8:00 AM – 4:00 PM

Website

https://gialliance.com/gi-alliance-mansfield-tx/

Telehealth

https://gialliance.com/service/virtual-telemedicine-united-states/

Emergency Care

If you are experiencing a medical emergency, please call 9-1-1.

Services Offered

Gastroenterology
Gastroenterologist in Mansfield, TX

Team

Gregory Brennan, M.D. — Gastroenterologist
Suwebatu T. Odunsi-Shiyanbade, M.D. — Gastroenterologist
Moustafa Youssef, M.D. — Gastroenterologist

Insurance & Payment

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Languages Spoken

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FAQs

If you are experiencing a medical emergency, what should you do?

Please call 9-1-1.

How do I schedule a non-urgent appointment?

This form is intended for non-urgent appointment requests only. Our office will handle non-emergency requests within 48 hours.

Social Media

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Photos

What Patients Say

Overall sentiment across review platforms: mixed

Healthgrades - Dr. Gregory Brennan: 4.8/5 (67 ratings)
WebMD Care - Dr. Gregory Brennan: 5.0/5 (62 ratings)
WebMD Care - Dr. Suwebatu Odunsi-Shiyanbade: 5.0/5 (97 ratings)
WebMD Care - Dr. Moustafa Youssef: 5.0/5 (63 ratings)
Healthgrades - Dr. Imad Ahmad: 5.0/5 (2 ratings)

Patients praise

Professional and clinically skilled care
Effective communication and thorough explanations of procedures
Approachable and kind bedside manner reported by many patients
Positive outcomes for procedures like colonoscopies and endoscopies
Staff praised by many as friendly and efficient in positive reviews

Common complaints

Difficulty with office staff responsiveness and communication
Rushed appointments and perceived lack of time spent with patients
Scheduling challenges and issues with last-minute cancellations
Poor follow-up regarding test results and prescription management
Occasional reports of perceived dismissive or rude bedside manner

"Patients appreciate Dr. Gregory Brennan's professional and caring approach... However, some patients report feeling rushed during appointments and experiencing dismissive behavior during consultations."

— WebMD Care

"Front desk people were very rude... The doctor never followed up with us on our care."

— WebMD Care (regarding Dr. Pudhota)

"My dad’s experience was that Dr. Brennan is condescending and gives off the vibe that he has somewhere better to be. The staff never returns voicemails."

— Trustindex.io (regarding GI Alliance)

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].