James Jun Yoon, M.D.
Medical Oncology Physician · New York, NY
James Jun Yoon, M.D. is a medical oncology physician with a practice address in New York, New York, and NPI 1669903548, issued on Mar 23, 2017. Check the license (New York 329655, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- James Jun Yoon
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 329655 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1275 York Ave, New York, NY 10065
- Phone
- (212) 639-2000
- Enumerated
- Mar 23, 2017
- Record last updated
- Aug 1, 2024
- Medicare enrollment
- Enrolled (PECOS I20240909002080); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 2017
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 548 in New York → Look up another NPI →
Also registered at 1275 York Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nivedita Aanur, M.D.Internal Medicine Physician1982833471
- Amy Aaronson, AC-PNP, RNCritical Care Pediatric Nurse Practitioner1407323504
- Michelle Abboud, N.P.Acute Care Nurse Practitioner1730596008
- Gina Abdulahad, PA-CPhysician Assistant1174027064
- Wassim Abida, MD, PHDHematology & Oncology Physician1518101096
- Lincy Abraham, NPPediatric Nurse Practitioner1295003739
Verify James Jun Yoon 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 329655Check 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 medical oncology physician in 2024
174 Medicare Part D claims for 29 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Acyclovir23 claims
- Venclexta22 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.
Bills Medicare through one group practice
- Memorial Hematology Lymphoma GroupNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Jun Yoon among 548 medical oncology physician records in New York
James Jun Yoon, M.D. is one of 548 medical oncology physician records with a practice address in New York. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 86% of them.
- NPI issued2017 · 86% of these records are older, 12% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2017 · median 2005 among the 389 with a school on file
- Record last updated2024 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in New York
There are 548 medical oncology physician records in New York.
All 548 in New York → Every provider in New York → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Adam Bass, M.D.New York, NY 100651346304573
- Tessa Cigler, MDNew York, NY 100651184692964
- Daniel Danila, M.D.New York, NY 100651952460172
- Mrinal Gounder, M.D.New York, NY 100651376758821
- Rachel Grisham, M.D.New York, NY 100651528195971
- Philip Kantoff, MDNew York, NY 100651235107871
- Glenn Kroog, MDNew York, NY 100651689798969
- Sujana Movva, MDNew York, NY 100651932318110
Common questions
What is James Jun Yoon, M.D.'s NPI number?
James Jun Yoon, M.D.'s National Provider Identifier (NPI) is 1669903548, issued on Mar 23, 2017. An NPI identifies a provider in billing; it is not a license.
Where is James Jun Yoon, M.D. located?
The NPPES record lists a practice address at 1275 York Ave, New York, NY, 10065. Phone: (212) 639-2000. Providers update this record themselves, so call before visiting.
How can I verify James Jun Yoon, M.D.'s license?
NPPES lists New York license number 329655, 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 James Jun Yoon, M.D. prescribe under Medicare Part D?
In 2024, James Jun Yoon, M.D. had 174 Medicare Part D claims for 29 beneficiaries; the average among medical oncology physician prescribers was 703. 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.