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

John Mascari, MD

Individual provider Neonatal-Perinatal Medicine Physician · NPI 1154828507

John Mascari, MD is a Pediatric Medicine in New York, New York. Graduated from Geisel School of Medicine at Dartmouth in 2018, 8 years ago. Licensed in New York.

Years since qualifying
8
Trained at
Geisel School of Medicine at Dartmouth
Licensed in
NY
In the registry since
2018
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1283 York Ave
New York, NY 10065
Phone: (646) 697-6428
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Neonatal-Perinatal Medicine Physician (primary) Taxonomy 2080N0001X · Licence 337258 (NY)

Record details

NPI number1154828507
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 11, 2018
Last updated in NPPESMarch 2, 2026
Certification dateMarch 2, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPEDIATRIC MEDICINE
Medical schoolGEISEL SCHOOL OF MEDICINE AT DARTMOUTH
Graduated 2018 (8 years in practice)
Accepts Medicare assignment Not indicated
Practice locations3 on file with Medicare

Other providers in New York