GI Alliance
Gastroenterology • Mansfield, TX
Information from public sources; not independently verified. Confirm hours, insurance and appointment availability with the clinic.
Last gathered July 11, 2026. How our information is sourced · Report incorrect information
Services Offered
Not published.
Team
Insurance & Payment
Not published.
Pay My Bill
Languages Spoken
Not published.
FAQs
To schedule an appointment, how can I contact the clinic?
To schedule an appointment, please call 817-760-7969 or click the “Message Us” button located at the bottom right corner of your screen and a member of our team will contact you within 48 hours.
Social Media
Photos
Photos published by GI Alliance showing the gastroenterology practice in Mansfield, TX.
What Patients Say
Overall sentiment across review platforms: positive
- giallianceofmansfield.com/Trustindex: 4.8 out of 5 stars (Over 1,100 reviews (site-aggregated))
- Healthgrades (Dr. Gregory Brennan): 4.8 out of 5 stars (67 ratings)
Patients praise
- Patients often describe the medical staff as caring, compassionate, and attentive
- High level of confidence in specific physicians such as Dr. Brennan and Dr. Youssef
- Positive experiences with the efficiency and bedside manner during procedures
- Professional and welcoming environment noted by many reviewers
Common complaints
- Difficulty reaching the office via phone, including issues with voicemails not being returned
- Long wait times for appointments and while in the office waiting room
- Reports of rude or unhelpful administrative/receptionist staff
- Occasional patient dissatisfaction with communication or feeling brushed off during care
"I had seen the doctor before and after the procedure and he took the time to hear any concerns I had and explained what he saw. I was also quite impressed with the friendly staff."
- Healthgrades user review"It's already more than 75 minutes past my appointment time (4:50pm) and I have not seen the doctor. Wouldn't recommend this office if you have any kind of schedule during your day."
- LocalityBiz user review"Dr. Yousef and his staff do a excellent job getting you in and out. Offering great bedside manner."
- LocalityBiz user reviewSynthesized from public review platforms as of Jul 11, 2026 - sources: [1][2][3][4].
In the News
- Dr. Suwebatu Odunsi-Shiyanbade, MD, Gastroenterologist | Mansfield, TX | WebMD - Dec 15, 2025
- Dr. Suwebatu Odunsi-Shiyanbade, MD – Gastroenterologist for Anal or Rectal Pain in Mansfield, TX - Dec 15, 2025
- GI Alliance MOB/Lonestar Endoscopy ASC Portfolio — HREA | Healthcare Real Estate Advisors - Aug 13, 2025
- Deborah Adams, CSW - Clinical Social Worker in Mansfield, TX - May 14, 2026
- Frisco, TX Gastroenterologist | Frisco Texas Gastroenterologist by Joseph Kim, MD - Oct 25, 2025
Information sourced from the clinic's website as of July 11, 2026.
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