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. Merl O'Brien:
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Specialties & Research
Dr. Merl O'Brien, MD is board certified in Emergency Medicine.
Education & Awards
Dr. O'Brien graduated from University of Missouri at Columbia.
Dr. O'Brien has 4 hospital affiliations:
- Sutter General Hospital
- Sutter Memorial Hospital
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- Additional Information
- Dr. Merl William O'Brien MD is a male Emergency Medicine Specialist, has 35 years of experience and practices in Emergency Medicine.
- Where does Dr. Merl W. O'Brien practice?
- Dr. Merl O'Brien has 4 office locations.
Dr. Merl O'Brien practices Emergency Medicine near Carmichael, CA.
Additional practice locations include: Folsom, CA and Roseville, CA.
See Carmichael Emergency Physicians.