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Preventive Medicine / Wellness
25 years of experience
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).

Learn more about Dr. John Charnas:

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Specialties & Research

Dr. John Charnas, MD, MPH is board certified in Occupational Medicine.

Education & Awards

Dr. Charnas graduated from Northeastern Ohio Universities, Rootstown.


Dr. Charnas has 3 hospital affiliations:

  • Malcolm Randall Veterans Affairs Medical Center 
  • Veterans Affairs Medical Center - Lake City 
  • Malcom Randall 


  • Spanish

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Additional Information
Dr. John Charnas MD and MPH is a male Preventative Medicine Specialist, has 25 years of experience and practices in Occupational Medicine.
Where does Dr. John Charnas practice?
Dr. John Charnas has 1 office location.
Dr. John Charnas practices Occupational Medicine near Gainesville, FL.
See Gainesville Preventive Medicine Specialists.