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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Specialties & Research
Dr. John O'Brien, MD is board certified in Internal Medicine.
- He has special expertise in 1 area:
Education & Awards
Dr. O'Brien graduated from University of Louisville .
Dr. O'Brien has 6 hospital affiliations:
- Norton Hospital
- Flaget Memorial Hospital
Accepted Insurance Plans
Dr. O'Brien accepts these health insurances in at least one office:
- Aetna - 3 plans
- United Healthcare - 20 plans
- Bluegrass Family Health - 1 plan
- University Health Care Inc., dba Passport Health Plan - 1 plan
- Anthem - 11 plans
- Humana - 8 plans