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Browse Health
Primary Care Doctor, Family Practitioner
20 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. Karen O'Brien:

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Specialties & Research

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


Education & Awards

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


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Additional Information
Dr. Karen K O'Brien MD is a female Family Practitioner, has 20 years of experience and practices in Family Medicine.
Where does Dr. Karen K. O'Brien practice?
Dr. Karen O'Brien has 1 office location.
Dr. Karen O'Brien practices Family Medicine near Falls Church, VA.
See Falls Church Primary Care Doctors.