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 1 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. Christina Abel, NURSE PRACTITIONEROrange, CA 928681033638911
  2. Jonathan Abelson, M.D.Thousand Oaks, CA 913601730348053
  3. Roy Abendroth, MDSan Francisco, CA 941151811988421
  4. Sunil Advani, M.D.La Jolla, CA 920931669649844
  5. Faisal Ahmed, MDStanford, CA 943051427314855
  6. Eugene Ahn, MDSimi Valley, CA 930651912999533
  7. Matthew Allen, MDRedding, CA 960011235301714
  8. Zahora Ally, MDAntioch, CA 945311306839915
  9. Munther Alqaisi, M.D.San Bernardino, CA 924111356454300
  10. Alessandra Amadeo, MDTorrance, CA 905031225011034
  11. Farhan Amanullah, MDStanford, CA 943051548528813
  12. Arya Amini, M.D.Duarte, CA 910101487910774
  13. Barbara Andersen, MDYucca Valley, CA 922841255355053
  14. Christian Anderson, M.D.Napa, CA 945581235160730
  15. Jacob Andrade, MDSalinas, CA 939011659630044
  16. Ellis Andras, MDSacramento, CA 958161306842299
  17. Nii Ankrah, M.D.Redding, CA 960011730574302
  18. Moshiur Anwar, M.D., PH.D.San Francisco, CA 941581215161211
  19. Sundera Ariathurai, M.D.Glendale, CA 912051750356176
  20. Robert Ash, MDOrange, CA 928681326238650
  21. Sammy Ashouri, M.D.Stanford, CA 943051871906396
  22. Katelyn Atkins, M.D.West Hollywood, CA 900481528470739
  23. Peter Austin, M.D.Diamond Bar, CA 917651487085221
  24. Samar Azawi, M.D.Long Beach, CA 908221568567667
  25. Soheila Azghadi, MDWalnut Creek, CA 945981952794455
  26. Hilary Bagshaw, MDStanford, CA 943051487943916
  27. Leslie Ballas, MDLos Angeles, CA 900891235388901
  28. Robyn Banerjee, MDLos Angeles, CA 900951174879795
  29. Franklin Banker, M.D.Cameron Park, CA 956821841297959
  30. Stephen Banks, MDSaint Helena, CA 945741770680852
  31. Carolyn Barnes, M.D.Rancho Mirage, CA 922701346484490
  32. Adam Bartret, M.D.Stanford, CA 943051942627864
  33. Sukhjeet Batth, M.D.Fresno, CA 937201821320011
  34. Jose Bazan, MDDuarte, CA 910101851535504
  35. Beth Beadle, MDStanford, CA 943051619116142
  36. Jonathan Bear, M.D.Escondido, CA 920291770849523
  37. Joseph Beck, M.D.Antioch, CA 945311740206085
  38. Robert Beckmann, MDSan Diego, CA 921341639580830
  39. Gail Bellman, M.D.San Jose, CA 951281417070723
  40. Cecil Benitez, M.D., PH.D.Upland, CA 917861578182739
  41. Daniel BernadBurbank, CA 915051740658681
  42. Phillip Beron, MDLos Angeles, CA 900951083698237
  43. Tanuja Bhandari, MDOrange, CA 928681518147610
  44. Onita Bhattasali, M.D., M.P.H.Los Angeles, CA 900271710306592
  45. Shelly Bian, MDLos Angeles, CA 900891255764346
  46. Kenneth Biehl, M.D.Salinas, CA 939011871702233
  47. Michael Binkley, M.D.Stanford, CA 943051760844856
  48. Sandra Birdwell, MDMenlo Park, CA 940251760820666
  49. Mark Bisignani, MDUkiah, CA 954821487655882
  50. Lindsay Blount, M.D.Santa Barbara, CA 931051558417568

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.