NPPES file of Aug 9, 2026

Specialist in California

5,749 NPPES records list specialist with a practice address in California, 15 per 100,000 residents, the 19th highest rate of 51. San Francisco and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 26 of 115.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 174400000X · method

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

San Francisco has the most, 666

  1. San Francisco666
  2. Los Angeles301
  3. Sacramento241
  4. San Diego207
  5. Oakland198

Specialist records in California

  1. John Doyle, C.M.T.Pleasant Hill, CA 945231396930095
  2. Timothy Doyle, P.T.Monterey, CA 939401093877888
  3. Kristopher Dozier, M.D.Oakland, CA 946021366606717
  4. David Drake, M.D.Long Beach, CA 908081124034285
  5. Eliot Drell, M.D.Placerville, CA 956671104871631
  6. Michael Drucker, M.D.Simi Valley, CA 930651477549970
  7. James Dryden, CPONorth Hollywood, CA 916021760537120
  8. Renee Dua, MDNorthridge, CA 913241154436707
  9. Kathleen Dubose, CMT, CIIM,CAModesto, CA 953501770622375
  10. Courtney Duckworth-Harris, OTR/LSherman Oaks, CA 914011093044729
  11. Diedra DudleySan Francisco, CA 941031306071980
  12. Ebrahim Duel, M.D.Santa Ana, CA 927011659386027
  13. Jennifer Duffy, PHDCorte Madera, CA 949251881716470
  14. Michael Duffy, M.D.Beverly Hills, CA 902101689635328
  15. Raj Dugel, M.D.Torrance, CA 905031013968312
  16. Catherine Duggan, L.M.T.Signal Hill, CA 907551255575908
  17. John Duggan, M.D., M.S.San Jose, CA 951241851313514
  18. Ronald Dugger, MDStockton, CA 952041790720688
  19. Roger Dumke, M.D.Torrance, CA 905051437263134
  20. Jaime Dumoit SmithSan Francisco, CA 941101942974662
  21. Tiffany DunbarOakland, CA 946091912551821
  22. Gail DuncanPanorama City, CA 914021447605530
  23. James DuncanCampbell, CA 950081083784631
  24. Raymond Duncan, M.D.Los Angeles, CA 900481295763332
  25. Roquette Dungan, LCSWSan Diego, CA 921231629195052
  26. Carissa Dunham, LESanta Ana, CA 927051326722711
  27. Jeanne Dunkel, OTRRiverside, CA 925041639474513
  28. Daniel Dunkelman, M.D.Los Angeles, CA 900481164571055
  29. Robert Dunn, M.D.Orange, CA 928661861541732
  30. Suzette Dunn, LELos Alamitos, CA 907201659066272
  31. Terri Dunn, M.D.Berkeley, CA 947051760543300
  32. Russell Dunnum, M.D.San Diego, CA 921211396856290
  33. Huong DuongSan Jose, CA 951161295089670
  34. Kieu DuongSan Francisco, CA 941101326480864
  35. Yolanda Duque, OTR/LLong Beach, CA 908021881969087
  36. Michele DuranOakland, CA 946091376192195
  37. Amina DuranaSan Francisco, CA 941181346724382
  38. David Durand, MDOakland, CA 946091770549875
  39. Taylor Durham, MPHSan Francisco, CA 941101548028806
  40. Rhea DurrSan Francisco, CA 941031801084389
  41. Caroline Dustin, D.OSan Diego, CA 921311154681153
  42. Molivann DuyLakewood, CA 907131427497965
  43. Sophia Dvorkina, MS.SPED,Marina Del Rey, CA 902921053046821
  44. Harrold Dwyer, PH. D., P.T.Vallejo, CA 945891144360793
  45. Robin Dyleski, M.D.Loma Linda, CA 923541730149006
  46. Mary Dylla, MDSaint Helena, CA 945741649243775
  47. Lillian DysonSan Francisco, CA 941021083036800
  48. Khrystyna DytsiakSacramento, CA 958251477433795
  49. Barry Dzindzio, MDOceanside, CA 920561750371407
  50. Celinda Eads, CMTEscondido, CA 920251194036822

Source: CMS NPPES, primary taxonomy 174400000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 19 of 51 per resident

  1. Massachusetts16
  2. West Virginia15
  3. Maryland15
  4. California15
  5. Minnesota15
  6. Delaware13
  7. 50 states and D.C.18

Source: CMS NPPES, primary taxonomy 174400000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

29.6% of these records appear in a Medicare file, against 17.0% 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. California29.6%
  2. United States17.0%

Specialist records in California, measured

  • In a Medicare file1,704 of 5,749 · 29.6% here, 17.0% nationally
  • In the CMS Doctors and Clinicians file1,076 · 18.7% here, 11.1% nationally
  • Not updated in five years or more4,403 · 76.6% here, 77.3% nationally
  • Median graduation year1989 · the 1,075 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 174400000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

5,749 NPPES records list specialist (174400000X) as their primary taxonomy with a practice address in California: 15 per 100,000 residents against 18 nationally (50 states and D.C.). San Francisco has 666 of them (12%).

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. Florida2,685
  2. Washington2,609
  3. Pennsylvania2,031
  4. Texas1,716

States with a similar rate per 100,000

  1. Minnesota14.6
  2. Maryland15.2
  3. West Virginia15.4
  4. Massachusetts15.7

The largest states

  1. New York22,636
  2. Florida2,685
  3. Washington2,609
  4. Pennsylvania2,031
  5. Texas1,716

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.