John T. Bjork, MD

Assistant Professor


  • Gastroenterology Diagnostic Lab - Froedtert
  • 9200 West Wisconsin Avenue
  • Milwaukee, WI 53226


  • Gastroenterology

New & Established Patients Call

My focus is on quality patient care, communication regarding treatment options for the individual patient, and always being a patient advocate.


Diseases and Conditions

  • Chronic Diarrhea
  • Gastroesophageal Reflux Disease (GERD)
  • Irritable Bowel Syndrome (IBS)
  • Peptic Ulcers
  • Swallowing Disorders
  • GI Bleeding

Treatments and Services

  • Weight Loss
  • Colonoscopy
  • Upper Endoscopy (EGD)
  • Therapy of Esophagus, Stomach, Duodenum & Colon
  • Flexible Sigmoidoscopy
  • Endoscopic Evaluation

Patients Ages Seen

  • Adult
  • Senior


  • English

Hospital Affiliations

  • Froedtert Hospital – Milwaukee
  • Zablocki VA Medical Center – Milwaukee

Board Certifications

  • Internal Medicine
  • Gastroenterology

Clinic Locations

Gastroenterology Diagnostic Lab - Froedtert

map of clinics' locations


After 36 years of clinical gastroenterology practice in Milwaukee, Dr. John T. Bjork relocated to the Division of Gastroenterology and Hepatology at the Medical College of Wisconsin.  Currently, he sees patients in the Gastroenterology Clinic at Froedtert Hospital and the Froedtert Surgery Center. He has extensive experience in general clinical gastroenterology. Dr. Bjork received his medical school diploma and fellowship training at the Medical College of Wisconsin. He has served as Chief of Internal Medicine and Gastroenterology at Aurora St. Luke’s Medical Center and Chief of Internal Medicine at Aurora West Allis Medical Center. In 2011-2012, Dr. Bjork was President of the Medical College of Wisconsin/Marquette Medical School Alumni Association. He has participated in the People to People Ambassador Program for the Gastroenterology Delegation to Russia, Vietnam, Columbia and Cuba.

Education and Training

Doctor of Medicine - Medical College of Wisconsin - Milwaukee, WI (1971)
Internship - St. Joseph Hospital - Denver, CO (1971-1972)
Residency in Internal Medicine - Tucson Hospitals, Medical Education Program - Tucson, AZ (1972-1974)
Fellowship in Gastroenterology - Medical College of Wisconsin - Milwaukee, WI (1974-1976)