Our Practice

Find out more about one of the

best gastroenterologist

, staff, and medical facilities of the area. See for yourself when you make an appointment today.
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Disorders We Treat

SIGI treats:
  • diverticulitis
  • pancreatitis
  • acid reflux
  • hemorrhoids
  • gallbladder
  • colon cancer
  • and many more
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    Dr. Zahoor Makhdoom

    and his staff are

    ASGE recognized

    and have all the credentials you should be looking for in your GI doctor.
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    Southern Illinois GI Specialists

    When you choose to work with Dr. Zahoor Makhdoom you’re working with the best staff around. Allow us to diagnose and treat diseases and illnesses such as acid reflux, Crohn's disease / colitis, colon cancer / prevention, diverticulitis, excessive weight gain / loss, gallstones / pancreatic disease, celiac disease, liver diseases (all kinds of hepatitis), constipation / diarrhea, hemorrhoids, chronic abdominal pain, and other rare problems of the GI tract. Get checked for colon cancer. SIGIS specializes in colonoscopy. Feel healthier than you have your entire life with a visit to our office. We are 100% committed to exceeding your expectations.

    Dr. Makhdoom specializes in: colon cancer prevention, all kinds of polyp removal, Crohn’s, non-surgical weight-loss treatment with gastric balloon therapy, non-surgical treatment of all grades of hemorrhoids (CRH System), Barrett’s esophagus (Radio Frequency Ablation) with acid reflux, colitis, ERCP, and IBS.


    You can find resources about to insurance information here.
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    Service Area

    We support the needs of Carbondale, Marion, and Southern Illinois area and beyond.
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    Monday – Friday 8.00 – 5.00
    Saturday Closed
    Sunday Closed
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    Zahoor A. Makhdoom