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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- Currently 4 of 4 stars
The overall average patient rating of Dr. John Mc Greal is Excellent.
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Specialties & Research
Dr. John Mc Greal, MD is board certified in Internal Medicine and Pediatrics.
Education & Awards
Dr. Mc Greal graduated from New York University - Mount Sinai.
Dr. Mc Greal has 3 hospital affiliations:
- Valley Hospital
- The Valley Hospital, Ridgewood
- Mount Sinai Hospital