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About

Gastroenterology Clinic of San Antonio (GCSA) is an established private medical group in San Antonio, TX, founded in 1970. It comprises six physicians and four office locations, offering subspecialty gastroenterology care for disorders of the GI tract, liver, pancreas, and gallbladder. The clinic emphasizes a family-oriented environment and compassionate, high-quality care. GCSA is active in research and education, with physicians who lecture at national meetings and contribute to endoscopic technique development. Services are provided in compliance with disability protection laws (Section 504, ACA 1557, ADA). Contact: info@gastroclinicsa.com or appt@gastroclinicsa.com; main phone: +1 210-615-8308. offices located at 8550 Datapoint Dr, San Antonio, TX.

Clinic Type

Gastroenterology

Address

8550 Datapoint Dr. Suite 200, San Antonio, TX 78229

Phone

1 (210) 615-8308

Email

info@gastroclinicsa.com

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

  • Gastroenterology
  • Colon cancer screening
  • Colonoscopy
  • EGD upper GI endoscopy
  • Hemorrhoid banding
  • Small bowel capsule endoscopy
  • 48 hour pH probe
  • Esophageal manometry
  • Helicobacter pylori testing
  • Lactose breath test
  • Fructose breath test
  • Bacterial overgrowth testing
  • Acid reflux/GERD management
  • GERSA (gastric emptying/related services)
  • Innovative clinical research

Technology & Equipment

  • Colonoscopy
  • EGD Upper GI Endoscopy
  • Small bowel capsule endoscopy
  • 48-hour pH probe
  • Esophageal manometry
  • Lactose breath test
  • Fructose breath test
  • Helicobacter pylori testing
  • Bacterial overgrowth testing

Team

  • Gary S. Gossen, M.D., M.D. — Physician
  • Allison H. Sirakos, M.D., M.D. — Physician
  • Russell Dean Havranek, M.D., M.D. — Physician
  • Nicholas Martinez, M.D., M.D. — Physician
  • Bassem W. Mazloum, M.D., M.D. — Physician
  • Charles W. Randall, M.D., M.D. — Physician
  • John Vizuete, M.D., MPH, M.D., MPH — Physician
  • V. Franz Zurita, M.D., M.D. — Physician

Insurance & Payment

Cash, Credit card, Insurance

Languages Spoken

  • English

FAQs

Do you accept new patients?

Yes, new patients are welcome.

What services do you provide?

Comprehensive gastroenterology care including colon cancer screening and various endoscopic procedures.

What are the clinic’s hours?

Not provided on the page.

Do you accept walk-ins or only scheduled appointments?

Not provided on the page.

What insurance plans are accepted?

Not provided on the page.

What payment methods are accepted?

Not provided on the page.

Do you offer telehealth services?

Not provided on the page.

How can I schedule an appointment?

Not provided on the page.

What forms of patient responsibilities are there?

Not provided on the page.

Do you have referrals or how to obtain one?

Not provided on the page.

What are the patient resources for billing/payments?

Not provided on the page.

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Yelp: 4.5 out of 5 stars (2 reviews)
  • LocalityBiz: 1 out of 5 stars

Patients praise

  • Professional and thorough medical staff
  • Caring bedside manner from some physicians
  • Clear communication regarding treatment plans

Common complaints

  • Difficulty reaching office by phone
  • Poor scheduling system and long wait times for appointments
  • Unresponsiveness to patient portal/email inquiries
  • Complaints about billing and cancellation fees

"Dr Zurita and his staff exceeded my expectations in both clinics. They show caring for the patient you rarely see today. Keeping you informed of whats going on throughout your stay and follow up..."

Yelp review by Melody E.

"I advise you to go somewhere else. These people have no consideration for others time. They didn't seem to care that i had been waiting there for almost 2 hours."

LocalityBiz review by Renita Cannon

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

Information sourced from the clinic's website as of July 11, 2026.

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San Antonio, TX·Gastroenterology

San Antonio Gastroenterology Associates (SAGA) is a private gastroenterology group based in San Antonio, Texas, founded in 1980. The practice operates 7 offices nationwide (all in the San Antonio area) and focuses on digestive health care, including colon cancer screening and colonoscopies. It is rated positively for quality and patient satisfaction and is featured as a Healthcare Bluebook facility with a green light for affordable, high-quality care. Company details include 6 employees, with multiple roles across medical and support functions. Notable locations include their HQ at 7333 Barlite Blvd, Suite 320, and other San Antonio offices such as 2833 Babcock Rd, 150 E Sonterra Blvd, and 11212 State Highway 151 Access Rd.

VerifiedSince 1980
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