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
- He has special expertise in 1 area:
- Flu (Human Influenza)
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- Additional Information
- Dr. John Charles Sullivan MD is a male General Practitioner and practices in General Practice.
- Where does Dr. John C. Sullivan practice?
- Dr. John Sullivan has 1 office location.
Dr. John Sullivan practices General Practice near Whittier, CA.
See Whittier General Practitioners.