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Dr. Alex John, M.D., FACG

Dr. Alex John, M.D., FACG  |  Gastro


Dr. Alex John, MD is a Doctor with his office located in Colchester, VT. He has 28 years of experience. His specialties include Gastroenterology and Internal Medicine. In addition to general gastroenterology, Dr. John’s special interests include Inflammatory Bowel Disease, and Celiac Disease. Additionally, Dr. John is the current governor of the Vermont chapter of the American College of Gastroenterology.

Dr. Alex John is one of the owners of the Green Mountain Surgery Center.


University of Missouri at Columbia, Doctor of Medicine, 1985
University of Missouri/Harry S. Truman VA Hospital, Internal Medicine Recidency, 1988
University of Vermont College of Medicine, Gastroenterology Fellowship, 1990

University of Vermont Medical Center

Colonoscopy (with biopsy), Colonoscopy (with lesion removal), Diagnostic Colonoscopy, Screening Colonoscopy (no biopsy), Upper Gastrointestinal Endoscopy (with biopsy).

Colorectal cancer screenings improve health by detecting early-stage colorectal cancers and precancerous lesions in people with no prior history of cancer. The object of these procedures is to reduce colorectal cancer incidence and mortality.   Colonoscopies are an effective way to screen for colon cancer because they have high sensitivity for early cancer detection, require only a single-session diagnosis and treatment, and have long intervals between examinations in patients who are over the age of 50.  For patients with symptoms or positive screening tests, a diagnostic colonoscopy is generally the best choice for examination. 

Upper endoscopy is primarily used as a diagnostic tool to permit visual inspection of the esophagus, stomach, and small intestines, which can be viewed by a thin flexible tube inserted through the mouth.  Uper endoscopy can be used to diagnose, and sometimes treat problems associated with acid reflux, difficulty swallowing, ulcers, abnormal growths, obstructions, inflammation, celiac disease and hiatal hernia. Upper endoscopy also includes certain therapeutic procedures such as removal of polyps, which can be cancerous.


Physician's 24/7 Contact Information for Patients:

Office Phone 1 802-864-7483