NPPES file of Aug 9, 2026

Surgical Oncology Physician in California

250 NPPES records list surgical oncology physician with a practice address in California, 0.6 per 100,000 residents, the 15th highest rate of 50. Los Angeles and Duarte have the most; each record links to the provider's NPI and the California license search. Page 1 of 5.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2086X0206X · 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, 38

  1. Los Angeles38
  2. Duarte26
  3. San Diego16
  4. San Francisco16
  5. Sacramento15

Surgical Oncology Physician records in California

  1. Ahmad Abou Abbass, M.DMission Viejo, CA 926911790946895
  2. Aziz Ahmad, M.D.Duarte, CA 910101487866216
  3. Rahim Aimaq, MDDuarte, CA 910101710133889
  4. Yasir AkmalLos Angeles, CA 900271689832966
  5. Mohammed Al-Temimi, MDSan Jose, CA 951241144562836
  6. Glenn Allison, M.D.Orange, CA 928661245386051
  7. Farin Amersi, M.D.West Hollywood, CA 900481679587604
  8. Stephanie Angarita, M.D.Downey, CA 902421003259219
  9. Elizabeth Arena, M.D.Los Angeles, CA 900481245460237
  10. Ava Armani, M.D.San Diego, CA 921031861759383
  11. Valerie Armstrong, MDSan Francisco, CA 941431871122911
  12. Avo Artinyan, MDDuarte, CA 910101609934942
  13. Marc AttiyehLos Angeles, CA 900481225471006
  14. Afshin Bahador, MDSan Diego, CA 921081316963713
  15. Scott Baldwin, MDSan Jose, CA 951241710035738
  16. Jaikrishna Balkissoon, MDBerkeley, CA 947051508974056
  17. Bradley Bandera, MDSanta Monica, CA 904041427205681
  18. George Barnes, MDValencia, CA 913551144293119
  19. Robert Barone, M.D.San Diego, CA 921231528083573
  20. Joel Baumgartner, MDSan Diego, CA 921031679629257
  21. Giovanni Begossi, M.D.Oakland, CA 946091053460873
  22. Robert Bennion, MDLos Angeles, CA 900951245253897
  23. Kjirsten Ayn Carlson Betz, MDSan Francisco, CA 941151124552880
  24. Neil Bhayani, MDTorrance, CA 905051881874238
  25. Anton Bilchik, M.D., PH.D., M.B.A.Santa Monica, CA 904041609916733
  26. Sarah Blair, M.D.San Diego, CA 921031710918008
  27. Lana Boladian, PA-CNewport Beach, CA 926631518722297
  28. Brendan Boland, MDLancaster, CA 935341790944783
  29. Valentina BonevOrange, CA 928681326312075
  30. Michael Bouvet, M.D.San Diego, CA 921031033177803
  31. Micah Brainerd, MDLos Angeles, CA 900481760019087
  32. Mai Brooks, MDThousand Oaks, CA 913601952315640
  33. Nefertiti Brown, M.D.Santa Monica, CA 904041801065685
  34. John A Butler, MDOrange, CA 928681902986094
  35. Robert Canter, MDSacramento, CA 958171700093226
  36. Azadeh Carr, M.D.Los Angeles, CA 900331154601441
  37. Arden Chan, M.D.San Diego, CA 921341891767984
  38. Helena Chang, MDLos Angeles, CA 900241306859038
  39. Kathryn Chen, MDTorrance, CA 905021902066681
  40. Steven Chen, M.D.San Diego, CA 921261366410086
  41. David Chi, M.D.Westlake Village, CA 913611881746428
  42. Fairouz Chibane, MDDuarte, CA 910101255869962
  43. Connie Chiu, M.D.Santa Monica, CA 904041821377342
  44. Rosa Choi, M.D.Santa Barbara, CA 931051376650713
  45. Alexander Christ, M.D.Santa Monica, CA 904041427316702
  46. David Chu, M.D.San Gabriel, CA 917761477553485
  47. Dortha Chu, MD., PHD,Valencia, CA 913551629227251
  48. Alice Chung, M.D.Santa Monica, CA 904041326296542
  49. Jason Cohen, M.D.Los Angeles, CA 900481598779605
  50. William Conway, MDSanta Barbara, CA 931051962626390

Source: CMS NPPES, primary taxonomy 2086X0206X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 15 of 50 per resident

  1. Wisconsin0.7
  2. Pennsylvania0.7
  3. Texas0.7
  4. California0.6
  5. Rhode Island0.6
  6. Florida0.6
  7. 50 states and D.C.0.6

Source: CMS NPPES, primary taxonomy 2086X0206X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

83.6% of these records appear in a Medicare file, against 82.9% 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. California83.6%
  2. United States82.9%

Surgical Oncology Physician records in California, measured

  • In a Medicare file209 of 250 · 83.6% here, 82.9% nationally
  • In the CMS Doctors and Clinicians file184 · 73.6% here, 75.5% nationally
  • Not updated in five years or more111 · 44.4% here, 49.5% nationally
  • Median graduation year2004 · the 184 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2086X0206X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

250 NPPES records list surgical oncology physician (2086X0206X) as their primary taxonomy with a practice address in California: 0.6 per 100,000 residents against 0.6 nationally (50 states and D.C.). Los Angeles has 38 of them (15%).

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. New York209
  2. Texas206
  3. Florida138
  4. Pennsylvania92

States with a similar rate per 100,000

  1. Louisiana0.6
  2. Wisconsin0.7
  3. Ohio0.7
  4. Illinois0.6

The largest states

  1. New York209
  2. Texas206
  3. Florida138
  4. Pennsylvania92
  5. Ohio84

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.