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 5 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. Michael Gensheimer, M.D.Palo Alto, CA 943041407172687
  2. Liam Ghiam, MD, MSLos Alamitos, CA 907201689123879
  3. Iris Gibbs, MDPalo Alto, CA 943041407994429
  4. Roger Gilbert, M.D.Carmichael, CA 956081518964642
  5. Sun Gim, MDLos Angeles, CA 900271093915670
  6. Michael Girvigian, MDLos Angeles, CA 900271215008289
  7. Scott Glaser, MDDuarte, CA 910101750643136
  8. Neal Glover, M.D.Monterey, CA 939401245247485
  9. Derek Go, MD, MSLos Angeles, CA 900741639639503
  10. Zelanna Goldberg, M.D.Sacramento, CA 958171669454385
  11. Encouse Golden, MD, PHDSan Francisco, CA 941431841525664
  12. Brian Goldsmith, M.D.Sacramento, CA 958151033117452
  13. Caitlin Gomez, M.D.West Hills, CA 913071619294907
  14. Patricia Gordon, MDBeverly Hills, CA 902111740320811
  15. Susanna Gordon, M.D.Riverside, CA 925061952309056
  16. Sri Gorty, M.D.Pomona, CA 917671952310054
  17. Alexander Gottschalk, M.D.San Francisco, CA 941151790728137
  18. Barry Goy, MDLos Angeles, CA 900271609947688
  19. Garth GreenTorrance, CA 905031366426421
  20. Peter Greenberg, MDPalm Desert, CA 922111568552859
  21. David Greene, M.D.Salinas, CA 939011285600403
  22. Thomas Guerrero, MD, PHDOroville, CA 959661932281334
  23. Kripa Guram, MDSan Diego, CA 921031003377391
  24. Behrooz Hakimian, MDWest Hollywood, CA 900481609826098
  25. Francine Halberg, MDGreenbrae, CA 949041275515256
  26. Hye Ri Han, MDArcadia, CA 910071013539063
  27. Jeannie Han, MDLos Angeles, CA 900271093995870
  28. Youssef Hanalla, MDVisalia, CA 932771437127545
  29. Steven Hancock, M.D.Stanford, CA 943051821136631
  30. Krishna Hanubal, MDOrange, CA 928681568154458
  31. Wendy Hara, M.D.Stanford, CA 943051437343076
  32. Garrett Harada, MDOrange, CA 928681831726330
  33. Nima Harandi, MDRoseville, CA 956781124446307
  34. Jeremy Harris, MDOrange, CA 928681922427053
  35. Asif Harsolia, M.D.Fountain Valley, CA 927081376565374
  36. Joseph Hastings, MD, MPHSanta Clara, CA 950511194815134
  37. Leith Hathout, MDChico, CA 959261700380623
  38. Jona Hattangadi-Gluth, MDLa Jolla, CA 920931467625491
  39. Carlin Hauck, M.D.Sacramento, CA 958161427495647
  40. Peter Hawkins, M.D., PH.D.Rohnert Park, CA 949281962820621
  41. Erin Healy, MDOrange, CA 928681437407863
  42. John Hegde, M.D.Los Angeles, CA 900951063859874
  43. Clayton Hess, MDGrass Valley, CA 959451235429507
  44. Robert Hesselgesser, MDOrange, CA 928681710979687
  45. Susan Hiniker, M.D.San Jose, CA 951281275859605
  46. Brace Hintz, M.D.Long Beach, CA 908221497868079
  47. Clement Ho, MDStanford, CA 943051790195188
  48. Jennifer Ho, MDLos Angeles, CA 900891740626019
  49. Quoc-Anh Ho, MDFountain Valley, CA 927081063805836
  50. Janet Hocko, M.D.Riverside, CA 925061558395558

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.