NPPES file of Aug 9, 2026

Medical Oncology Physician in California

447 NPPES records list medical oncology physician with a practice address in California, 1.1 per 100,000 residents, the 31st highest rate of 51. Stanford and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 1 of 9.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RX0202X · method

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

Stanford has the most, 82

  1. Stanford82
  2. San Francisco53
  3. Duarte48
  4. Los Angeles39
  5. San Diego19

Medical Oncology Physician records in California

  1. Donald Abrams, MDSan Francisco, CA 941431679530018
  2. Ranjana Advani, MDStanford, CA 943051639225121
  3. Kambiz Afrasiabi, M.D.Anaheim, CA 928011578572368
  4. Mark Agulnik, MDLos Angeles, CA 900891164448734
  5. David Agus, M.D.Los Angeles, CA 900641356328249
  6. Weiyun Ai, MDSan Francisco, CA 941431649346842
  7. Shafqat Akhtar, MDRed Bluff, CA 960801700960788
  8. Luai Al Rabadi, M.D.San Francisco, CA 941581659637452
  9. Michael Alexander, MDSanta Cruz, CA 950651053321760
  10. Sandra AlgazeLos Angeles, CA 900891861886707
  11. Arash Alizadeh, MD, PHDStanford, CA 943051295824423
  12. Laurie Anderson, PACPasadena, CA 911031548366461
  13. Richard AndersonNapa, CA 945581669659066
  14. Lauren AntrimDuarte, CA 910101568921716
  15. Chloe Atreya, MD, PHDSan Francisco, CA 941151326058777
  16. Rajeshwari Ayyar, MDSan Jose, CA 951241871670703
  17. Pushpendu Banerjee, M.D.La Jolla, CA 920371164497855
  18. Afsaneh Barzi, M.D.Los Angeles, CA 900331265480412
  19. Reva Basho, M.D.West Hollywood, CA 900481508146721
  20. Pamela Basto, MD, PHDStanford, CA 943051194221903
  21. Hemali Batra-Sharma, MDSan Francisco, CA 941431225529928
  22. Abinav Baweja, MDPleasanton, CA 945881770961575
  23. Teja Bedi, MDSan Jose, CA 951241871777573
  24. Osagie Bello, M.DBrawley, CA 922271164726378
  25. Mark Benyunes, M.D.South San Francisco, CA 940801538418298
  26. Christopher Benz, M.D.San Francisco, CA 941151457381014
  27. Emily Bergsland, MDSan Francisco, CA 941151295792729
  28. Colin BergstromStanford, CA 943051346673985
  29. Casey Bermack, MD PHDFoster City, CA 944041588125199
  30. John Berry, M.D.San Francisco, CA 941151942236997
  31. Allison Betof, MD, PHD, FASCOStanford, CA 943051174961908
  32. Munveer Bhangoo, MDLa Jolla, CA 920371235499518
  33. Sharonlin Bhardwaj, M.D.Duarte, CA 910101033506134
  34. Vinona Bhatia, MDOakland, CA 946111477656973
  35. Jin Sun Bitar, M.D.Los Angeles, CA 900481477940161
  36. Trever Bivona, M.D., PH.D.San Francisco, CA 941151093861346
  37. Douglas Blayney, MDStanford, CA 943051811073877
  38. Sean Bohen, M.D., PH.D.Palo Alto, CA 943041194869685
  39. Robert Bok, MD, PHDSan Francisco, CA 941581235312323
  40. Guus Bol, MD, PHDSan Francisco, CA 941431932914926
  41. Rohit Bose, M.D., PH.D.San Francisco, CA 941431710140850
  42. Linda Bosserman, M.D., F.A.C.PDuarte, CA 910101346289824
  43. Hinda Boutrid, MDSan Jose, CA 951241457796070
  44. Melissa Brammer, M.D., M.P.H.South San Francisco, CA 940801558649194
  45. Scott Brook, M.D.Palm Springs, CA 922621245424365
  46. Nathalie Brophy, MDCampbell, CA 950081265491450
  47. Nam Bui, MDStanford, CA 943051982994802
  48. Elwyn Cabebe, MDSan Jose, CA 951241821067281
  49. Janai Carr-Ascher, MD, PHDSacramento, CA 958171538401195
  50. Dani Castillo, MDDuarte, CA 910101427570332

Source: CMS NPPES, primary taxonomy 207RX0202X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 31 of 51 per resident

  1. Virginia1.2
  2. Kansas1.2
  3. Wisconsin1.2
  4. California1.1
  5. Indiana1.1
  6. Idaho1.1
  7. 50 states and D.C.1.7

Source: CMS NPPES, primary taxonomy 207RX0202X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

82.1% of these records appear in a Medicare file, against 81.8% 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. California82.1%
  2. United States81.8%

Medical Oncology Physician records in California, measured

  • In a Medicare file367 of 447 · 82.1% here, 81.8% nationally
  • In the CMS Doctors and Clinicians file313 · 70.0% here, 72.5% nationally
  • Not updated in five years or more184 · 41.2% here, 49.3% nationally
  • Median graduation year2004 · the 312 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RX0202X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

447 NPPES records list medical oncology physician (207RX0202X) as their primary taxonomy with a practice address in California: 1.1 per 100,000 residents against 1.7 nationally (50 states and D.C.). Stanford has 82 of them (18%).

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. Massachusetts421
  2. Texas547
  3. New York548
  4. Florida561

States with a similar rate per 100,000

  1. Indiana1.1
  2. Wisconsin1.2
  3. Idaho1.1
  4. Kansas1.2

The largest states

  1. Florida561
  2. New York548
  3. Texas547
  4. Massachusetts421
  5. Pennsylvania265

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.