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Family Practitioner, Primary Care Doctor
19 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 O'Brien:

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Specialties & Research

Dr. John O'Brien, MD is board certified in Family Medicine.

Education & Awards

Dr. O'Brien graduated from Uniformed Services University, Bethesda.


Dr. O'Brien has 1 hospital affiliations:

  • DeWitt Army Community Hospital 

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Additional Information
Dr. John Joseph O'Brien MD is a male Family Practitioner, has 19 years of experience and practices in Family Medicine.
Where does Dr. John J. O'Brien practice?
Dr. John O'Brien has 1 office location.
Dr. John O'Brien practices Family Medicine near Fort Belvoir, VA.
See Fort Belvoir Family Physicians.