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. Charles O'Brien:

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Specialties & Research

  • He has special expertise in 1 area:
  • Cancer

Education & Awards

Dr. O'Brien graduated from University of New England, Biddeford.


Dr. O'Brien has 2 hospital affiliations:

  • Henrietta D Goodall Hospital 
  • York Hospital 

> > > > Dr. Charles O'Brien, DO

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Additional Information
Dr. Charles O'Brien DO is a male Radiologist, has 25 years of experience and practices in Radiology.
Where does Dr. Charles O'Brien practice?
Dr. Charles O'Brien has 3 office locations.
Dr. Charles O'Brien practices Radiology near York, ME.
Additional practice locations include: Kittery, ME and Wells, ME.
See York Radiologists.