NPPES file of Aug 9, 2026

Pain Medicine Physician in California

140 NPPES records list pain medicine physician with a practice address in California, 0.4 per 100,000 residents, the 21st highest rate of 51. Los Angeles and Walnut Creek have the most; each record links to the provider's NPI and the California license search. Page 1 of 3.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 208VP0000X · 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, 9

  1. Los Angeles9
  2. Walnut Creek7
  3. Sacramento6
  4. Redding4
  5. San Francisco4

Pain Medicine Physician records in California

  1. Nathan Abdelsayed, M.DWest Covina, CA 917901295230142
  2. Rohit Aiyer, M.D.Huntington Beach, CA 926471801207014
  3. Emile Allen, M.D.Oakland, CA 946051043546625
  4. Parham Amini, M.D.Northridge, CA 913241942558556
  5. Kasra Amirdelfan, MDWalnut Creek, CA 945981033113642
  6. Rasheed Amireh, MDFresno, CA 937201023040748
  7. Michael Amster, MDSanta Cruz, CA 950621114023058
  8. Joe ArbourHuntington Beach, CA 926491649918889
  9. Jeanne Axler, M.D.Santa Monica, CA 904051083648547
  10. Feng Bai, MDTracy, CA 953761336108372
  11. Stephen Banister, M.D.Grass Valley, CA 959451376768416
  12. David Barton, MDAuburn, CA 956021467446138
  13. David Bearman, M.D.Goleta, CA 931171134382005
  14. Robert Bonakdar, M.D.La Jolla, CA 920371376584540
  15. Daniel Bonis, M.D.Long Beach, CA 908071447261136
  16. Brian Boyd, M.D.Orange, CA 928681932242302
  17. Kenneth Bradley, MDTorrance, CA 905031558479352
  18. W. Brown, M.D.San Mateo, CA 944011932402633
  19. Richard Budenz, MPH, PA-CElk Grove, CA 957581356999007
  20. Sarah Buenviaje-Smith, MDApple Valley, CA 923071922079375
  21. Marina Bulatov, M.D.Oakland, CA 946121932215944
  22. Robert Bundy, MDSan Francisco, CA 941151972681575
  23. Seung Chang, MDLong Beach, CA 908061730342106
  24. Rick Chavez, MDRedondo Beach, CA 902771144271495
  25. Ya-Ting Chen, MDFremont, CA 945381982095535
  26. Christopher Ching, MDLos Angeles, CA 900271497822415
  27. Nicole Chitnis, M.D.Oakland, CA 946121265577068
  28. Dennis Chu, MDRoseville, CA 956611114077922
  29. Zachary Cohen, M.D.San Diego, CA 921231598021982
  30. Genevieve D'Souza, MDPalo Alto, CA 943041730208430
  31. Heather Davids, MDSacramento, CA 958161841346442
  32. Paul Dejulio, M.D.San Diego, CA 921031871851154
  33. Leslie Delaney, M.D.Walnut Creek, CA 945981124110309
  34. Margaret Elfering, M.D.Santa Maria, CA 934541760467260
  35. Carlos Estiandan, M.D.Reseda, CA 913351467533943
  36. James Fenska, MDRancho Cordova, CA 956701306333026
  37. Francis Ferrante, MDLos Angeles, CA 900951972547511
  38. Naila Ghafoor, MDLoma Linda, CA 923541629538418
  39. Javid Ghandehari, M.D.Santa Monica, CA 904031306002761
  40. Hovhannes Ghazaryan, MDFullerton, CA 928311851910665
  41. Sayyed Gilani, M.D.Clovis, CA 936111093246662
  42. Jill Gorze, MDBellflower, CA 907061356418180
  43. Douglas Grant, MDWalnut Creek, CA 945981922002542
  44. Donald Greco, MDRancho Mirage, CA 922701740416767
  45. Benjamin Greer, M.D.Danville, CA 945261871890525
  46. Eric Grigsby, M.D.Napa, CA 945581952328494
  47. Susan Gutierrez, MDSan Ramon, CA 945831518961127
  48. Kayvan Haddadan, M.D.Sacramento, CA 958251538127832
  49. Alan Hadland, MDPetaluma, CA 949521811120272
  50. John HanNorwalk, CA 906501174743603

Source: CMS NPPES, primary taxonomy 208VP0000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 21 of 51 per resident

  1. Nebraska0.4
  2. Wisconsin0.4
  3. Texas0.4
  4. California0.4
  5. Wyoming0.3
  6. New York0.3
  7. 50 states and D.C.0.4

Source: CMS NPPES, primary taxonomy 208VP0000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

75.0% of these records appear in a Medicare file, against 82.6% 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. California75.0%
  2. United States82.6%

Pain Medicine Physician records in California, measured

  • In a Medicare file105 of 140 · 75.0% here, 82.6% nationally
  • In the CMS Doctors and Clinicians file81 · 57.9% here, 66.8% nationally
  • Not updated in five years or more75 · 53.6% here, 46.8% nationally
  • Median graduation year2001 · the 81 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 208VP0000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

140 NPPES records list pain medicine physician (208VP0000X) as their primary taxonomy with a practice address in California: 0.4 per 100,000 residents against 0.4 nationally (50 states and D.C.). Los Angeles has 9 of them (6%).

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. Florida117
  2. Texas115
  3. New York66
  4. Arizona57

States with a similar rate per 100,000

  1. Wisconsin0.4
  2. Washington0.3
  3. Indiana0.4
  4. Michigan0.3

The largest states

  1. Florida117
  2. Texas115
  3. New York66
  4. Arizona57
  5. Pennsylvania57

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.