Julia Sungeun Ahn
Physician Assistant · Stony Brook, NY
Julia Sungeun Ahn is a physician assistant with a practice address in Stony Brook, New York, and NPI 1780055699, issued on Oct 19, 2015. Check the license with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Julia Sungeun Ahn
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 101 Nicolls RD RM 50, Stony Brook, NY 11794
- Phone
- (631) 444-2478
- Enumerated
- Oct 19, 2015
- Record last updated
- Oct 5, 2022
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 15,555 in New York → Look up another NPI →
Also registered at 101 Nicolls RD RM 50
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicole Casio, MDStudent in an Organized Health Care Education/Training Program1063215085
- Benjamin Fombonne, MDEmergency Medicine Physician1932669439
- Jillian Leibowitz, DOEmergency Medicine Physician1225787476
- Christopher Loh, MDStudent in an Organized Health Care Education/Training Program1982309167
- Jesse McCarthy, PAPhysician Assistant1013389881
- Andrew Mozier, DOEmergency Medicine Physician1205539830
Verify Julia Sungeun Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average physician assistant in 2024
205 Medicare Part D claims for 123 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Ibuprofen26 claims
- Cephalexin16 claims
- Ondansetron Odt14 claims
- Prednisone14 claims
- Cefpodoxime Proxetil13 claims
- Methocarbamol11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 91.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Julia Sungeun Ahn among 15,555 physician assistant records in New York
Julia Sungeun Ahn is one of 15,555 physician assistant records with a practice address in New York. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 40% of them.
- NPI issued2015 · 40% of these records are older, 57% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2022 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
128 physician assistant records list a practice address in Stony Brook
They are 128 of the 3,053 NPPES records with a practice address in Stony Brook, and 15,555 physician assistant records in New York.
All 15,555 in New York → Every provider in Stony Brook → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Robert Ansbach, R.P.A.-CStony Brook, NY 117941326041260
- Ricardo Aranguren, P.A.Stony Brook, NY 117941154357879
- Bryan Bobrowsky, P.A.Stony Brook, NY 117941720017031
- Colleen Calandra, P.A.Stony Brook, NY 117941215990593
- Scott CarterStony Brook, NY 117941730279779
- Dennis Duffy, P.A.Stony Brook, NY 117941932136447
- Karen Dybus, RPAStony Brook, NY 117941255334363
- Scott Marchini, P.A.Stony Brook, NY 117941255369401
Common questions
What is Julia Sungeun Ahn's NPI number?
Julia Sungeun Ahn's National Provider Identifier (NPI) is 1780055699, issued on Oct 19, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Julia Sungeun Ahn located?
The NPPES record lists a practice address at 101 Nicolls RD RM 50, Stony Brook, NY, 11794. Phone: (631) 444-2478. Providers update this record themselves, so call before visiting.
How can I verify Julia Sungeun Ahn's license?
Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Julia Sungeun Ahn prescribe under Medicare Part D?
In 2024, Julia Sungeun Ahn had 205 Medicare Part D claims for 123 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Julia Sungeun Ahn's MIPS final score?
The 2023 MIPS final score is 91.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.