Archives: Physician

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  • Michael Piesman, MD

    Michael Piesman, MD

    After a distinguished military career, Dr. Piesman chose to join the physicians at Gastroenterology Consultants in February of 2014....

  • David Pryor Jones, DO

    David Pryor Jones, DO

    A former Lieutenant Colonel in the US Army, Dr. Jones proudly served in Iraq in 2008 as Chief of...

  • Hays L. Arnold, MD

    Hays L. Arnold, MD

    Dr. Arnold, a former Lieutenant Colonel who served in the US Army for more than 11 years, joined our...

  • Zarema Singson, MD

    Zarema Singson, MD

    Dr. Zarema Singson is skilled in all areas of gastroenterology with a special interest in inflammatory bowel disease, colon...

  • Alejandro Pruitt, MD

    Alejandro Pruitt, MD

    Dr. Pruitt joined our practice in 2006 after serving for over 20 years in the U.S. Air Force. He...

  • Alfredo Espinoza, MD

    Alfredo Espinoza, MD

    Dr. Espinoza is bilingual and treats patients who need general gastrointestinal care, including colon cancer screening and end-stage liver...

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Gastroenterology Consultants of San Antonio (GCSA) is a Professional Association owned by the physicians that practice within it. GCSA’s physicians are directly involved in the management of patient services. GCSA physicians have indirect ownership interest in our Histology/Pathology, Anesthesia, Infusion and Ambulatory Surgical Centers (ASC).


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