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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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Specialties & Research

Dr. John Irwin, DO is board certified in Internal Medicine.

  • He has special expertise in 1 area:
  • Colonoscopy

Education & Awards

Dr. Irwin graduated from University of Missouri at Kansas City.


Dr. Irwin has 8 hospital affiliations:

  • Bridgton Hospital 
  • Rumford Hospital 

> > > > Dr. John Irwin, DO

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Additional Information
Dr. John Hawkins Irwin DO is a male Internist, has 30 years of experience and practices in Internal Medicine.
Where does Dr. John H. Irwin practice?
Dr. John Irwin has 6 office locations.
Dr. John Irwin practices Internal Medicine near Scarborough, ME.
Additional practice locations include: Oakland, ME and Waterville, ME.
See Scarborough Internists.