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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).

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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.