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:
View the full profile to get information on:
- What's important to you
View full profile
- Currently 4 of 4 stars
The overall average patient rating of Dr. John O'Brien is Excellent.
|Ease of Appointment||
|Spends Time with Me||
|Follows Up After Visit||
Specialties & Research
Dr. John O'Brien, MD is board certified in Internal Medicine and Cardiovascular Disease.
- He has special expertise in 7 areas:
- Acute Coronary Syndrome (ACS)
- Heart Block
- Heart Failure
- High Blood Pressure (Hypertension)
- High Cholesterol (Hypercholesterolemia)
- Myocardial Infarction
- Unstable Angina
Education & Awards
Dr. O'Brien graduated from Georgetown University, Washington.
Dr. O'Brien has 2 hospital affiliations:
- Inova Fair Oaks Hospital
- Inova Fairfax Hospital
Accepted Insurance Plans
Dr. O'Brien accepts these health insurances in at least one office:
- United Healthcare - 2 plans
- Great-West Healthcare - 2 plans
- Unicare - 2 plans
- AMERIGROUP - 2 plans
- Cigna - 10 plans
- Humana - 2 plans
- Aetna - 3 plans
- Medicare - 1 plan
Similar doctors nearby
- Additional Information
- Where does Dr. John T. O'Brien practice?
Dr. John O'Brien practices Internal Medicine, Cardiovascular Disease, Cardiology, Interventional Cardiology, and Nuclear Medicine near Annandale, VA.
Additional practice locations include: Falls Church, VA.
See Annandale Internists, Annandale Cardiologists, and Annandale Nuclear Medicine Physicians.