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
Dr. John O'Brien, MD is board certified in Emergency Medicine.
Education & Awards
Dr. O'Brien graduated from Wayne State University, Detroit. He has 2 awards.
Dr. O'Brien has 7 hospital affiliations:
- Arnold Palmer Medical Center
- Sand Lake Hospital
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- Additional Information
- Where does Dr. John F. O'Brien practice?
Dr. John O'Brien practices Emergency Medicine near Orlando, FL.
See Orlando Emergency Physicians.