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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Specialties & Research
- He has special expertise in 1 area:
- Depressive Disorder
Education & Awards
Dr. O'Brien graduated from University of Kentucky , Lexington.
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- Additional Information
- Where does Dr. John P. O'Brien practice?
Dr. John O'Brien practices Psychiatry near New Orleans, LA.
See New Orleans Psychiatrists.