McFarland Clinic

Johnson, Thomas, MD

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Johnson, Thomas
4.7 out of 5
  • 137 Patient Ratings
Specialties & Services
Primary Clinic
1215 Duff Avenue Office
1215 Duff Ave
Ames, IA 50010

Dr. Thomas Johnson - Practice Information

Joined McFarland Clinic

July 1989

Medical Interests

  • Colon cancer research and prevention
  • Biliary and pancreatic disorders

Education & Professional Certification


  • Diplomate, National Board of Internal Medicine
  • Diplomate, National Board of Medical Examiners
  • Diplomate, American Board of Gastroenterology


University of Illinois, Champaign-Urbana, IL
  • BS, 1972-1976
University of Health Sciences, North Chicago, IL
  • BS, 1977-1979
University of Illinois, Chicago, IL
  • MD, 1980-1984


Loyola University Medical Center, Chicago, IL
  • Internal Medicine, 1985-1987


Loyola University Medical Center, Chicago, IL
  • Gastroenterology, 1987-1989

Professional Societies

  • American College of Gastroenterology
  • American Medical Association
  • Associate-American College of Physicians
  • Iowa Medical Foundation
  • Iowa Medical Society
  • Story County Medical Society

Professional & Personal Interests

Leadership Roles

  • Director, Mary Greeley Medical Center Endoscopy Lab
  • Department Chair, McFarland Clinic Gastroenterology

Community Involvement

Ames Emergency Shelter Residence Project, Upward Sports for Children
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