NPPES file of Aug 9, 2026

Radiation Oncology Physician in California

735 NPPES records list radiation oncology physician with a practice address in California, 1.9 per 100,000 residents, the 33rd highest rate of 51. Los Angeles and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 7 of 15.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2085R0001X · method

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

Los Angeles has the most, 98

  1. Los Angeles98
  2. San Francisco44
  3. San Diego43
  4. Stanford43
  5. Sacramento32

Radiation Oncology Physician records in California

  1. Ari Kassardjian, MDSimi Valley, CA 930651689200115
  2. Noah Kastelowitz-Lieberman, MDStanford, CA 943051184119653
  3. Teri Katz, MDLos Angeles, CA 900271639246457
  4. Linas Kazlauskas, MDGlendale, CA 912051124002381
  5. Douglas Kelly, MDEureka, CA 955011497716781
  6. Jason Kelly, MDOakland, CA 946111063590859
  7. David Khan, MDEl Segundo, CA 902451649274150
  8. Monica Khanna, M.D.Rancho Mirage, CA 922701255353900
  9. Behnood KhodayariBakersfield, CA 933061487920005
  10. Deepak Khuntia, MDLos Gatos, CA 950321578525531
  11. Elizabeth Kidd, M.D.Stanford, CA 943051760508899
  12. Brian Kim, MDNewport Beach, CA 926631316990567
  13. Charlotte Kim, M.D.Santa Cruz, CA 950651013079649
  14. Daniel Kim, M.D.Los Angeles, CA 900891306156153
  15. Dong Kim, M.D., PH.D.Ontario, CA 917611386816262
  16. Hyo Kim, M.D.Santa Barbara, CA 931051093752750
  17. Hyun Kim, MDDuarte, CA 910101467718379
  18. Ji Kim, M.D.Lancaster, CA 935341558523217
  19. Neung Kim, M.D.Corona, CA 928821063421923
  20. Paul Kim, M.D.Tustin, CA 927801629205190
  21. Sangwoo Kim, MDSan Diego, CA 921031013544139
  22. Sara Kim, M.D.Los Angeles, CA 900951851405278
  23. Benjamin King, M.D.West Hollywood, CA 900481285829036
  24. Christopher King, M.D.Los Angeles, CA 900951962574145
  25. Vijaykumar Kini, MDTustin, CA 927801417940198
  26. Amar Kishan, M.D.Los Angeles, CA 900951871869339
  27. Daniella KlebanerPalo Alto, CA 943041023638269
  28. James Knister, M.D.Napa, CA 945581164459061
  29. Susan Knox, M.D.,PH.D.Palo Alto, CA 943041912034240
  30. Anuradha Koka, M.D.San Diego, CA 921031538153549
  31. Wayne Koll, M.D.Redding, CA 960011548269699
  32. Derrick Koo, MDRoseville, CA 956781902984495
  33. Mariam Korah, MDAntioch, CA 945311083891543
  34. David Kornguth, M.D.San Francisco, CA 941031801820394
  35. David Kraus, MDGrass Valley, CA 959451710987953
  36. Eric Ku, MDModesto, CA 953551013478999
  37. Charlotte Kubicky, MD, PHDRoseville, CA 956611194935858
  38. Abhishek Kumar, MDCerritos, CA 907031043847114
  39. Jeffrey Kuo, MDOrange, CA 928681063592194
  40. Patrick Kupelian, MDLos Angeles, CA 900951144205881
  41. William Kurohara, M.D.Whittier, CA 906061073665618
  42. Stephanie Kwan, MD, MTMLoma Linda, CA 923541992360366
  43. Robert Kwon, MDLaguna Hills, CA 926531841294337
  44. Young Kwon, M.D.San Bernardino, CA 924041699773275
  45. Ramona Kyaw, M.D.Pasadena, CA 911051053494914
  46. Trang La, MDOakland, CA 946111003002718
  47. Colton Ladbury, MDIrvine, CA 926181891256756
  48. Shahid Latif, MDApple Valley, CA 923071629022553
  49. Ronald Lau, MDLos Angeles, CA 900891578639993
  50. Steven LauLos Angeles, CA 900951225370232

Source: CMS NPPES, primary taxonomy 2085R0001X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 33 of 51 per resident

  1. Kentucky1.9
  2. Maine1.9
  3. Colorado1.9
  4. California1.9
  5. Nebraska1.9
  6. Tennessee1.9
  7. 50 states and D.C.2.1

Source: CMS NPPES, primary taxonomy 2085R0001X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

82.9% of these records appear in a Medicare file, against 82.3% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. California82.9%
  2. United States82.3%

Radiation Oncology Physician records in California, measured

  • In a Medicare file609 of 735 · 82.9% here, 82.3% nationally
  • In the CMS Doctors and Clinicians file545 · 74.1% here, 74.0% nationally
  • Not updated in five years or more406 · 55.2% here, 54.6% nationally
  • Median graduation year2005 · the 545 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2085R0001X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

735 NPPES records list radiation oncology physician (2085R0001X) as their primary taxonomy with a practice address in California: 1.9 per 100,000 residents against 2.1 nationally (50 states and D.C.). Los Angeles has 98 of them (13%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Florida520
  2. New York449
  3. Texas449
  4. Pennsylvania383

States with a similar rate per 100,000

  1. Colorado1.9
  2. Nebraska1.9
  3. Tennessee1.9
  4. Delaware1.8

The largest states

  1. Florida520
  2. New York449
  3. Texas449
  4. Pennsylvania383
  5. Ohio298

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record 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.