John T. O'Brien, MD

John O'Brien, MD

John O'Brien, MD

John T. O'Brien, MD

Cardiovascular Disease, Internal Medicine
Years of Experience

8081 Innovation Park Dr
Fairfax, VA 22031


About John T. O'Brien, MD

Dr. John O’Brien is an interventionally trained, board certified cardiologist at Inova Health System. He joined Inova with more than 36 years of clinical experience.

For the past 30 years, he has been in private practice in Northern Virginia, practicing all aspects of adult cardiology. During his training, Dr. O’Brien realized that he wanted to be a part of the rapidly evolving movement taking place in the field of cardiology. The continued refinement of these various theories and procedures has helped improve the quality of his patients' lives.

A native of Falls Church, VA, Dr. O’Brien currently resides in Oakton, VA. He enjoys pursuing his interests which include cycling, organic gardening, and basketball.


  • Top Doctors, Washingtonian, 2021
Medical School
Georgetown University School of Medicine

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