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:
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- Currently 4 of 4 stars
The overall average patient rating of Dr. John O'Brien is Excellent.
Specialties & Research
Dr. John O'Brien, MD is board certified in Surgery.
- He has special expertise in 1 area:
- Flu (Human Influenza)
Education & Awards
Dr. O'Brien graduated from Georgetown University, Washington.
Dr. O'Brien has 1 hospital affiliations:
- Newton Memorial Hospital
Accepted Insurance Plans
Dr. O'Brien accepts these health insurances in at least one office:
- United Healthcare - 20 plans
- Unicare - 12 plans
- Cigna - 14 plans
- The Empire Plan (UHC) - 1 plan