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. Charles O'Brien, MD is board certified in Emergency Medicine.
More Specialties & Research
Education & Awards
Dr. O'Brien graduated from Loma Linda University.More Education & Awards
Dr. O'Brien has 1 hospital affiliations:
- Community Hospital of Long Beach
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- Additional Information
- Where does Dr. Charles B. O'Brien practice?
Dr. Charles O'Brien practices Emergency Medicine near Huntington Beach, CA.
See Huntington Beach Urgent Care Centers.