NPPES file of Aug 9, 2026

Dong Won Kim, M.D., PH.D.

Radiation Oncology Physician · Ontario, CA

Dong Won Kim, M.D., PH.D. is a radiation oncology physician with a practice address in Ontario, California, and NPI 1386816262, issued on Mar 31, 2008. Check the license (California A104479, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1386816262
Name
Dong Won Kim
Credential
M.D., PH.D.
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
A104479 CA
Self-reported in NPPES; status is on the state search
Practice location
2295 S Vineyard Ave, Ontario, CA 91761
Phone
(909) 724-2020
Enumerated
Mar 31, 2008
Record last updated
Nov 2, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20081105000129); accepts Medicare assignment
Medical or professional school
Loma Linda University School Of Medicine, 2003
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →

Also registered at 2295 S Vineyard Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ana Mae Abaya, NPFamily Nurse Practitioner1255164943
  2. Sheila Marie Adan, D.O.Family Medicine Physician1912272733
  3. Anna Alley, CRNACertified Registered Nurse Anesthetist1518399732
  4. Hye Hyun An, PHARMDPharmacist1578428470
  5. Leonila Araneta, LCSWClinical Social Worker1861771974
  6. Fernando AvilaFamily Medicine Physician1396364147

Verify Dong Won Kim in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A104479    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.3 times the Medicare Part D claims of the average radiation oncology physician in 2024

311 Medicare Part D claims for 111 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.

  1. Dong Kim311
  2. Specialty average134

Most prescribed

  1. Tamsulosin Hcl125 claims
  2. Myrbetriq71 claims
  3. Mirabegron Er23 claims
  4. Trospium Chloride13 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.

Industry payments in 2024: $22.26

1 payment: food and beverage; the largest payer was Novocure Inc. 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.

  1. Dong Kim$22.26
  2. Specialty average$1,897.85

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

  1. Southern California Permanente Medical GroupAnaheim, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Dong Won Kim among 735 radiation oncology physician records in California

Dong Won Kim, M.D., PH.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 2008, is newer than 57% of them.

  • NPI issued2008 · 57% of these records are older, 38% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2003 · median 2005 among the 545 with a school on file
  • Record last updated2021 · 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).

Radiation Oncology Physician providers in California

There are 735 radiation oncology physician records in California.

All 735 in California → Every provider in Ontario → Radiation Oncology Physician nationwide →

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Peter Austin, M.D.Diamond Bar, CA 917651487085221
  2. Sri Gorty, M.D.Pomona, CA 917671952310054
  3. Yallapragada Rao, M.D.Pomona, CA 917671871503490
  4. David Hsu, MDMonterey Park, CA 917541619983343
  5. Cecil Benitez, M.D., PH.D.Upland, CA 917861578182739
  6. Sean Szeja, M.D.Upland, CA 917861023351822
  7. Edward Jung, MDWest Covina, CA 917901003011941
  8. Arthur Chung, MDWest Covina, CA 917921295026102

Common questions

What is Dong Won Kim, M.D., PH.D.'s NPI number?

Dong Won Kim, M.D., PH.D.'s National Provider Identifier (NPI) is 1386816262, issued on Mar 31, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Dong Won Kim, M.D., PH.D. located?

The NPPES record lists a practice address at 2295 S Vineyard Ave, Ontario, CA, 91761. Phone: (909) 724-2020. Providers update this record themselves, so call before visiting.

How can I verify Dong Won Kim, M.D., PH.D.'s license?

NPPES lists California license number A104479, 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 Dong Won Kim, M.D., PH.D. prescribe under Medicare Part D?

In 2024, Dong Won Kim, M.D., PH.D. had 311 Medicare Part D claims for 111 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.