Newtown Connecticut Gastroenterologist


Connecticut Gastroenterologist Dr. Donald Gordon practices medicine the way you remember it from days long past. He handles patient care the old fashioned way, without computers in the examination rooms so that their focus is solely on the patient and their needs.

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SEE WHAT OUR Patients Are Saying About Us

Dr Gordon has been my physician for 20 years and never once have I thought of switching to someone new. He is kind, compassionate and has always made me feel like I was his number one priority. I am also a health care provider and have referred several patients as well as friends to Dr Gordon because I know they will get the best care possible.
Submitted August 8, 2017

Excellent physician. No brainer to see this man. Really knows his stuff.
Submitted May 6, 2017

After seeing many GI doctor’s on the east coast, including Yale, and being turned away because they could not help me Dr. Gordon was the only doctor to commit to my case and truly had my best interests at heart. I could not be more pleased with his care. I recommend him to everyone who has difficult GI cases as he has built the reputation of solving the cases no one else can. He is the best GI doctor around.
Submitted December 20, 2016

Testing & Services

  • H. pylori

    Have an upset stomach? We do noninvasive testing for H. Pylori (Helicobacter pylori) which is a type of bacteria that enters your body and may live in your digestive tract. Over time, the H. pylori bacteria can cause stomach and duodenal ulcers, and in some cases lead to cancer. Symptoms of H. pylori include:

    • Recurring abdominal pain
    • Bloating
    • Burping
    • Loss of appetite
    • Nausea
    • Vomiting
    • Weight loss for no clear reason


    Our team of healthcare providers are able to quickly and easily test for H. Pylori on site in our Newtown, Connecticut office.

  • S.I.B.O. (Small Intestinal Bacterial Overgrowth)

    Have an upset stomach? We do noninvasive testing for S.I.B.O. (Small Intestinal Bacterial Overgrowth) which is a common condition that occurs when bacteria (resembling bacteria normally found in the intestine) proliferate in large numbers in the small intestine. Studies have shown that over 50% of patients diagnosed with IBS (Irritable Bowel Syndrome) have S.I.B.O. (ref).

    Symptoms of S.I.B.O. include:

    • Abdominal bloating or distension
    • Gas, diarrhea & constipation
    • Abdominal pain
    • In advanced cases, there may be vitamin and mineral deficiencies and weight loss


    Our team of healthcare providers are able to quickly and easily test for S.I.B.O. on site in our Newtown, Connecticut office.

  • Lactose / Fructose Intolerance

    Have an upset stomach? We do noninvasive testing for Lactose or Fructose Intolerance, conditions that are related to the intake of two different sugars, lactose and fructose.

    Lactose Intolerance is due to an inadequate amount of the enzyme lactase, which breaks down lactose in your small intestine. Symptoms of Lactose Intolerance include:

    • Abdominal bloating and cramps
    • Diarrhea, Gas and nausea


    Fructose Intolerance is hereditary and people are usually born with the disorder. With fructose intolerance, your body does not produce aldolase B, the enzyme that assists with fructose metabolism.

    Our team of healthcare providers are able to quickly and easily test for SIBO on site in our Newtown, Connecticut office.

  • Pill Cam

    The PillCam is used to diagnose disorders of the small bowel by just swallowing a pill. It is a safe and simple way to image your entire small bowel mucosa. The PillCam does not require sedation or inserting tubes into your digestive tract and aside from fasting for 10 hours before the procedure it requires little preparation. The PillCam is also disposable and naturally passes through your body.

    This noninvasive test is used to diagnose Crohn’s disease and other abnormalities in the small bowel and colon.

  • SmartPill

    SmartPill is an ingestible capsule that is taken in our office to evaluate motility disorders like gastroparesis (a condition in which the contents of the stomach empty too slowly) and chronic constipation.

    SmartPill minimizes patient down-time by allowing patients to resume most normal daily activities while data are being collected by the capsule.  SmartPill eliminates radiation exposure and is the only motility test that provides a complete transit profile of the GI tract. [ref]

  • Painless Removal Of Hemorrhoids

    Our Hemorrhoidal Treatment Center offers painless and simple removal of hemorrhoids in the office. Typically the procedure is 5-10 minutes and requires 4-5 office visits to complete the process.

  • Endoscopy

    An endoscopy is a nonsurgical procedure used to examine your digestive tract and screen for colon cancer using a flexible tube with a light and camera attached to it. Endoscopy’s are often used to evaluate any of the below conditions:

    • Stomach pain
    • Ulcers, gastritis, or difficulty swallowing
    • Digestive tract bleeding
    • Stomach pain, loss of appetite and filling up quickly after meals
    • Weight loss
    • Nausea
  • Colonoscopy

    A Colonoscopy is a test that doctors use to look at the inner lining of your large intestine (rectum and colon). The procedure is done with a thin, flexible tube called a colonoscope, which allows the doctor to look at the colon. Colonoscopy’s can help find ulcers, colon polyps, tumors, and areas of inflammation or bleeding. Additionally, the procedure can be used as a screening process for cancer or precancerous growths in the colon or rectum.