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Internist, Cardiologist (heart), Gastroenterologist (digestive)
8 years of experience
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).

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Specialties & Research

Dr. John Petersen, DO, MD is board certified in Internal Medicine and Cardiovascular Disease.

  • He has special expertise in 10 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acute Coronary Syndrome (ACS)
  • Constipation
  • Heart Block
  • Hepatitis C
  • High Blood Pressure (Hypertension)
  • High Cholesterol (Hypercholesterolemia)
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis
  • Unstable Angina

Education & Awards

Dr. Petersen graduated from University of Florida, Gainesville.


Dr. Petersen has 7 hospital affiliations:

  • Shands at Live Oak 
  • Shands at Starke 

> > > > Dr. John Petersen, DO, MD

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Additional Information
Dr. John W Petersen DO and MD is a male Internist, has 8 years of experience and practices in Internal Medicine, Cardiovascular Disease, and Gastroenterology.
Where does Dr. John W. Petersen practice?
Dr. John Petersen has 1 office location.
Dr. John Petersen practices Internal Medicine, Cardiovascular Disease, and Gastroenterology near Gainesville, FL.
See Gainesville Internists, Gainesville Cardiologists, and Gainesville Gastroenterologists.