• Skip to primary navigation
  • Skip to main content
Vermont Gastroenterology logo

Vermont Gastroenterology

Caring comprehensive diagnosis, treatment, and prevention of digestive diseases.

  • For Patients
    • Patient Resources
    • All FAQs
    • Patient Forms and Downloads
  • Procedures
    • Procedures Overview
    • Procedure FAQs
    • Procedure Prep Instructions
    • Colonoscopy
    • Upper Endoscopy (EGD)
    • Sigmoidoscopy
    • Capsule Endoscopy & Other Procedures
  • Our Physicians
    • All Physicians
    • Cory Halliburton
    • Alex John
    • David Schwartz
    • Alan Landau
    • Jacek Mysior
    • Fady Asslo
  • About
    • Our Practice
    • What is Gastroenterology?
    • Green Mountain Surgery Center
  • Contact/Directions
  • Patient Portal
  • Pay Your Bill

Alex John, M.D., F.A.C.G.

Board Certified in Internal Medicine and Gastroenterology

Specialties: Celiac Disease, Inflammatory Bowel Disease

In addition to general Gastroenterology, Dr. John’s special interests include Inflammatory Bowel Disease and Celiac Disease.

After receiving his B.A. from St. Louis University in St. Louis, Missouri, Dr. John received his medical degree from the University of Missouri, Columbia. He completed his internship and residency in Internal Medicine at the University of Missouri/Harry S. Truman VA Hospital, and then practiced as an emergency room physician at the University of Missouri Hospital and Clinics. Dr. John began his career in Gastroenterology after receiving fellowship training in Gastroenterology and Hepatology at the University of Vermont.

Dr. John is an active staff member at University of Vermont Medical Center with full attending privileges.  Additionally, Dr. John is the former governor of the Vermont chapter of the American College of Gastroenterology.

« Our Physicians
Alex John

Alex John, M.D., F.A.C.G.

white angles top
Green Mountains

Physician Bios

To learn about another physician at our practice, please click on a name below.

Cory Halliburton

Cory Halliburton

M.D.

Alex John

Alex John

M.D., F.A.C.G.

David Schwartz

David Schwartz

M.D., FACG, AGAF

Alan Landau

Alan Landau

M.D.

Jacek Mysior

Jacek Mysior

M.D.

Fady Asslo M.D.

Fady Asslo

M.D.

Green Mountains

Want to Learn More?

If you have questions about scheduling, your upcoming appointment, payment, and other topics related to our practice, visit our “Frequently Asked Questions” page for answers to commonly asked questions.

Read Our FAQs
footer graphic

Helpful Links

  • Patient Portal
  • Pay Your Bill
  • Procedure Prep Instructions
  • Procedure FAQs
  • About Your Procedure
  • Directions to our office and facilities
  • Privacy Policy
MGMA Member Logo
Vermont Gastroenterology

875 Roosevelt Avenue

Suite 132
Colchester, Vermont 05446 


Phone: (802) 864-7483

Fax: (802) 660-4337
info@vtgastro.com

Contact Us

Copyright © 2025 Vermont Gastroenterology – 875 Roosevelt Avenue, Suite 132 – Colchester, Vermont 05446
Website by Stride Creative Group