Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Gregory M Sullivan, MD

Individual provider Psychiatry Physician · NPI 1457437493

Dr. Gregory M Sullivan, MD is a Psychiatry Physician in New York, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

617 W End Ave Ste 1B
New York, NY 10024-1607 Not confirmed with CMS for 19 years — call before visiting
Phone: (212) 579-0339
Fax: (212) 543-5437
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 198732 (NY)

Record details

NPI number1457437493
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 31, 2006
Last updated in NPPESJuly 8, 2007

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