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

Dr. John Anthony Sullivan, MD

Individual provider Internal Medicine Physician · NPI 1679984918

Dr. John Anthony Sullivan, MD is an Internal Medicine Physician in Stony Brook, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2014
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

101 Nicolls Rd
Stony Brook, NY 11794-0001
Phone: (631) 444-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 992000992 (NY)

Record details

NPI number1679984918
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 8, 2014
Last updated in NPPESMay 8, 2014
Mailing address101 Nicolls Rd, Stony Brook, NY 11794-0001

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