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License & Identifications

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. James Gregg:

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Specialties & Research

Dr. James Gregg, MD is board certified in Emergency Medicine.

Education & Awards

Dr. Gregg graduated from University of Massachusetts, Worcester.


  • Spanish

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Additional Information
Dr. James Alan Gregg MD is a male Emergency Medicine Specialist, has 28 years of experience and practices in Emergency Medicine.
Where does Dr. James A. Gregg practice?
Dr. James Gregg has 1 office location.
Dr. James Gregg practices Emergency Medicine near Phoenix, AZ.
See Phoenix Emergency Physicians.