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. Gregory Mazarin:

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Specialties & Research

Dr. Gregory Mazarin, MD is board certified in Emergency Medicine.

Education & Awards

Dr. Mazarin graduated from Yeshiva University, Bronx.


Dr. Mazarin has 11 hospital affiliations:

  • St Vincent's Midtown Hospital 
  • Montefiore Medical Center 

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Additional Information
Dr. Gregory I Mazarin MD is a male Emergency Medicine Specialist, has 15 years of experience and practices in Emergency Medicine.
Where does Dr. Gregory I. Mazarin practice?
Dr. Gregory Mazarin has 2 office locations.
Dr. Gregory Mazarin practices Emergency Medicine near Bronx, NY.
See Bronx Emergency Physicians.