Gastroenterology

Thank you so much for the comfort and healing you provide.

Gastroenterology

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UMC Health System is equipped with multiple gastroenterology clinics to meet your needs:

  • UMC Southwest Gastroenterology
    Dr. Islam and Dr. Costilla provide adult care, while Dr. Simek provides pediatric care.
  • UMC Physicians Gastroenterology
    Dr. Al-Tamimi provides adult care.
  • Gastroenterology at UMC Southwest Medical
    Dr.Costilla sees patients at this campus designed for women and their families on Wednesdays.

No matter which of these clinics you go to, you will receive cutting-edge, expert gastroenterological care for the whole family.


Each of our Gastroenterologists specializes in preventing, diagnosing and treating conditions related to the digestive/gastrointestinal (GI) tract. Each also can provide expert nutritional information to help treat various symptoms you may be experiencing.

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Meet the Physicians

Our Gastroenterology team is made up of some of the best gastroenterologists in West Texas. Each of them received training and experience beyond compare.

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