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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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Education & Awards

Dr. Robertson graduated from University of Pennsylvania , Philadelphia.


Dr. Robertson has 3 hospital affiliations:

  • Warren General Hospital 
  • Northeastern Hospital 
  • Warren Dental Arts Hospital 

> > > > Dr. John Robertson, MD

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Additional Information
Dr. John Mason Robertson MD is a male Internist and practices in Internal Medicine.
Where does Dr. John M. Robertson practice?
Dr. John Robertson has 1 office location.
Dr. John Robertson practices Internal Medicine near Warren, PA.
See Warren Internists.