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Internist, Gastroenterologist (digestive)
32 years of experience
Video profile
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (3)

The overall average patient rating of Dr. John Petersen is Average. Dr. Petersen has been reviewed by 5 patients who have provided 3 comments. The rating is 2.5 out of 5 stars.

Patient Ratings
Ease of Appointment 3.3
Promptness 3.0
Courteous Staff 3.0
Accurate Diagnosis 2.3
Bedside Manner 2.0
Spends Time with Me 2.3
Follows Up After Visit 2.3

Specialties & Research

Dr. John Petersen, DO is board certified in Internal Medicine and Gastroenterology.

  • He has special expertise in 6 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Gastrointestinal Hemorrhage
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

Dr. Petersen graduated from Midwestern University, Downers Grove. He has 1 awards.

Sw fla osteopathic physician of the year/1996


Dr. Petersen has 7 hospital affiliations:

  • Baptist Medical Center 
  • Memorial Hospital Jacksonville 


  • Spanish
  • English

> > > > Dr. John Petersen, DO

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Additional Information
Dr. John Maynard Petersen DO is a male Internist, has 32 years of experience and practices in Internal Medicine and Gastroenterology.
Where does Dr. John M. Petersen practice?
Dr. John Petersen has 2 office locations.
Dr. John Petersen practices Internal Medicine and Gastroenterology near Jacksonville, FL.
Additional practice locations include: Orange Park, FL.
See Jacksonville Internists and Jacksonville Gastroenterologists.