GI Alliance – Mansfield, TX – N. Miller Rd
Gastroenterology • Mansfield, TX
Clinic Type
Gastroenterology
Address
647 N. Miller Rd, Suite 200, Mansfield, TX 76063
Phone
817-760-7969
communications@gialliance.com
Opening Hours
Monday – Thursday 8:00 AM – 5:00 PM; Friday 9:00 AM – 1:30 PM
Emergency Care
If you are experiencing a medical emergency, please call 9-1-1.
Services Offered
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Team
Insurance & Payment
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Pay My Bill
Languages Spoken
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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
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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