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

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

View full profile

Patient Reviews

Have you visited Dr. O'Brien? Share your experience.
Write a Review

Specialties & Research

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


Education & Awards

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


Similar doctors nearby

Dr. Jack Smith

Family Medicine
32 years experience
Falls Church, VA

Dr. Carlos Plasencia

Family Medicine
22 years experience
Falls Church, VA

Dr. Bonnie Arze

Family Medicine
15 years experience
Falls Church, VA

Dr. Guido Rojas

General Practice
35 years experience
Alexandria, VA

Dr. Romaldo Desouza

General Practice
37 years experience
Alexandria, VA

Dr. John Pulizzi

Family Medicine
49 years experience
Alexandria, VA
Search All Similar Doctors
Additional Information
Dr. Karen K O'Brien MD is a female Family Practitioner, has 19 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.