Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Julia Sungeun Ahn

Individual provider Physician Assistant · NPI 1780055699

Julia Sungeun Ahn is a Physician Assistant in Stony Brook, New York. Licensed in New York. Registered with an NPI since 2015.

Licensed in
NY
In the registry since
2015
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Practice location Address checks out

101 Nicolls Rd Rm 50
Stony Brook, NY 11794-2508
Phone: (631) 444-2478
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X (NY)

Record details

NPI number1780055699
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedOctober 19, 2015
Last updated in NPPESOctober 5, 2022
Certification dateOctober 5, 2022

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients16
Services billed 16 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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