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. Mervin O'Neil:
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Specialties & Research
Dr. Mervin O'Neil, MD is board certified in Thoracic Surgery (Cardiothoracic Vascular Surgery).
Education & Awards
Dr. O'Neil graduated from University of California at Los Angeles.
Dr. O'Neil has 3 hospital affiliations:
- Kaiser Foundation Hospital - Sacramento
- Sutter Roseville Medical Center
- Kaiser Foundation Hospital - Roseville
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- Additional Information
- Where does Dr. Mervin B. O'Neil practice?
Dr. Mervin O'Neil practices Thoracic Surgery, Cardiothoracic Vascular Surgery, and Surgery near Sacramento, CA.
See Sacramento Surgeons.