Stephanie Yoon, M.D.
Radiation Oncology Physician · Duarte, CA
Stephanie Yoon, M.D. is a radiation oncology physician with a practice address in Duarte, California, and NPI 1346775624, issued on Apr 25, 2017. Check the license (California A158753, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephanie Yoon
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A158753 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Duarte RD, Duarte, CA 91010
- Phone
- (626) 256-4673
- Enumerated
- Apr 25, 2017
- Record last updated
- Jun 29, 2022
- Medicare enrollment
- Enrolled (PECOS I20220713001203); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 2017
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 1500 Duarte RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Wajidah Abdul-KhabirHospitalist Physician1215323522
- Farah Abdulla, MDDermatology Physician1093934390
- Megan Abel, PA-CPhysician Assistant1104100619
- Michelle Afkhami, M.D.Hematology (Pathology) Physician1326230228
- Vaibhav Agrawal, M.D.Hematology & Oncology Physician1538402565
Verify Stephanie Yoon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A158753Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average radiation oncology physician in 2024
25 Medicare Part D claims for 19 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
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 practice group's MIPS final score for 2023 (Medicare payment program): 99.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $175.13
2 payments; by number, the most common kind was food and beverage; the largest payer was Accuray Incorporated. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- City OF Hope Medical FoundationDuarte, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephanie Yoon among 735 radiation oncology physician records in California
Stephanie Yoon, M.D. is one of 735 radiation oncology physician records with a practice address in California. 83% 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 87% of them.
- NPI issued2017 · 87% of these records are older, 11% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2017 · median 2005 among the 545 with a school on file
- Record last updated2022 · 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 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 radiation oncology physician records list a practice address in Duarte
They are 16 of the 1,287 NPPES records with a practice address in Duarte, and 735 radiation oncology physician records in California.
All 735 in California → Every provider in Duarte → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Arya Amini, M.D.Duarte, CA 910101487910774
- Jose Bazan, MDDuarte, CA 910101851535504
- Yi-Jen Chen, MDDuarte, CA 910101972698868
- Savita Dandapani, M.D. , PH.D.Duarte, CA 910101619141751
- Scott Glaser, MDDuarte, CA 910101750643136
- Hyun Kim, MDDuarte, CA 910101467718379
- Heather McGee, MD, PHDDuarte, CA 910101447593678
- Eric Radany, MDDuarte, CA 910101346346897
Common questions
What is Stephanie Yoon, M.D.'s NPI number?
Stephanie Yoon, M.D.'s National Provider Identifier (NPI) is 1346775624, issued on Apr 25, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Stephanie Yoon, M.D. located?
The NPPES record lists a practice address at 1500 Duarte RD, Duarte, CA, 91010. Phone: (626) 256-4673. Providers update this record themselves, so call before visiting.
How can I verify Stephanie Yoon, M.D.'s license?
NPPES lists California license number A158753, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephanie Yoon, M.D. prescribe under Medicare Part D?
In 2024, Stephanie Yoon, M.D. had 25 Medicare Part D claims for 19 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Stephanie Yoon, M.D.'s MIPS final score?
The 2023 MIPS final score is 99.1 of 100, reported for the practice group. 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.