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

John Mahon, MD

Individual provider Diagnostic Radiology Physician · NPI 1326509373

John Mahon, MD is a Diagnostic Radiology in New York, New York. Graduated from State University of New York at Stony Brook, School of Medicine in 2019, 7 years ago. Practices with Southside Faculty Medical Affiliates University Faculty Practice Corp, a 223-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
7
Trained at
State University of New York at Stony Brook, School of Medicine
Licensed in
NY
In the registry since
2019
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

100 E 77th St
New York, NY 10075-1850
Phone: (212) 434-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 332145-01 (NY)

Record details

NPI number1326509373
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 30, 2019
Last updated in NPPESMay 19, 2025
Certification dateMay 19, 2025

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolSTATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE
Graduated 2019 (7 years in practice)
Group practice Southside Faculty Medical Affiliates University Faculty Practice Corp — 223 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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