Christine Sunjung Ahn, MD
Emergency Medicine Physician · Stony Brook, NY
Christine Sunjung Ahn, MD is an emergency medicine physician with a practice address in Stony Brook, New York, and NPI 1336307461, issued on May 27, 2008. Check the license (New York 257406, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Christine Sunjung Ahn
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 257406 NY
Self-reported in NPPES; status is on the state search - Practice location
- Stony Brook University Hospital, Stony Brook, NY 11794
- Phone
- (631) 444-2478
- Enumerated
- May 27, 2008
- Record last updated
- Jul 13, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (631) 444-3919
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 5,025 in New York → Look up another NPI →
Also registered at Stony Brook University Hospital
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Surabhi Aggarwal, MDNeonatal-Perinatal Medicine Physician1548404254
- Obianuju Aguolu, MDStudent in an Organized Health Care Education/Training Program1992957898
- Andrus Alian, D.O.Emergency Medicine Physician1306082326
- Enid Anaya, M.D.Student in an Organized Health Care Education/Training Program1992025043
- Elise Arbefeville, MDAnatomic Pathology & Clinical Pathology Physician1659542520
- Tamara Augustin, M.D.Internal Medicine Physician1336376797
Verify Christine Sunjung Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 257406Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average emergency medicine physician in 2024
15 Medicare Part D claims for 13 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Christine Sunjung Ahn among 5,025 emergency medicine physician records in New York
Christine Sunjung Ahn, MD is one of 5,025 emergency medicine physician records with a practice address in New York. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 35% of them.
- NPI issued2008 · 35% of these records are older, 58% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2010 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
116 emergency medicine physician records list a practice address in Stony Brook
They are 116 of the 3,053 NPPES records with a practice address in Stony Brook, and 5,025 emergency medicine physician records in New York.
All 5,025 in New York → Every provider in Stony Brook → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Abida Butler, M.D.Stony Brook, NY 117941982683173
- Christopher Carleo, M.D.Stony Brook, NY 117941023044823
- Stuart Chale, M.D.Stony Brook, NY 117941861428765
- Michael Imperato, M.D.Stony Brook, NY 117941194791665
- Lester Kallus, M.D.Stony Brook, NY 117941154357887
- Melina Khwaja, M.D.Stony Brook, NY 117941164467544
- David Lawrence, DOStony Brook, NY 117941144273228
- Andrea Libutti, M.D.Stony Brook, NY 117941053349241
Common questions
What is Christine Sunjung Ahn, MD's NPI number?
Christine Sunjung Ahn, MD's National Provider Identifier (NPI) is 1336307461, issued on May 27, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Christine Sunjung Ahn, MD located?
The NPPES record lists a practice address at Stony Brook University Hospital, Stony Brook, NY, 11794. Phone: (631) 444-2478. Providers update this record themselves, so call before visiting.
How can I verify Christine Sunjung Ahn, MD's license?
NPPES lists New York license number 257406, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christine Sunjung Ahn, MD prescribe under Medicare Part D?
In 2024, Christine Sunjung Ahn, MD had 15 Medicare Part D claims for 13 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.