NPPES file of Aug 9, 2026

Clinical Social Worker in California

36,261 NPPES records list clinical social worker with a practice address in California, 93 per 100,000 residents, the 22nd highest rate of 51. Los Angeles and San Diego have the most; each record links to the provider's NPI and the California license search. Page 103 of 726.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 1041C0700X · 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, 4,806

  1. Los Angeles4,806
  2. San Diego2,036
  3. San Francisco1,358
  4. Oakland1,130
  5. Sacramento1,120

Clinical Social Worker records in California

  1. Natalie Castellanos, LCSWRiverside, CA 925071902926595
  2. Percy Castellanos, B.A.Berkeley, CA 947051518127471
  3. Teresita Castellanos, LCSWSan Diego, CA 921541598165441
  4. Yesenia CastellanosLos Angeles, CA 900171497004022
  5. Georgina Castellanos AlvaradoLos Angeles, CA 900171194974691
  6. Raquel Castellanos Miller, LCSWRichmond, CA 948011588179642
  7. Margarita Castellanos PalazuelosSan Ysidro, CA 921731104379791
  8. Andiver Castellanos-Alvarez, LCSWLos Angeles, CA 900281548180623
  9. Jennifer Castello, MSW, LCSWSan Leandro, CA 945771043383482
  10. Albert CastellonNapa, CA 945581295241479
  11. Andrea Castellon, MSW, LCSWSan Bernardino, CA 924081376056283
  12. Denice CastellonNorthridge, CA 913251033762133
  13. Edith Castellon, LCSWOrange, CA 928681649845256
  14. Miriam CastellonCeres, CA 953071427316074
  15. Alexis CastilloLos Angeles, CA 900171467906214
  16. Alice Castillo, LCSWAnaheim, CA 928011528153012
  17. Amaya CastilloSanta Ana, CA 927051427972926
  18. Ana Castillo, LCSWSan Francisco, CA 941181124365465
  19. Araceli Castillo, MSW, ASWTurlock, CA 953801760135032
  20. Bridget CastilloSan Jose, CA 951261861900821
  21. Candelario Castillo, LCSWConcord, CA 945201730540782
  22. Carla CastilloRancho Cucamonga, CA 917301548787542
  23. Catherine CastilloGarden Grove, CA 928401588155170
  24. Caylie CastilloLos Angeles, CA 900261598503724
  25. Crystal CastilloGrand Terrace, CA 923131841503117
  26. Diana CastilloRiverside, CA 925011982453635
  27. Diana Castillo, ACSW CADC-CASPerris, CA 925711356614010
  28. Erick CastilloWoodland Hills, CA 913641821817230
  29. Esther Castillo, L.C.S.W.Sacramento, CA 958161982913059
  30. Fatima Castillo, LCSWIndio, CA 922031700747466
  31. Frances Castillo, ASWSalinas, CA 939061962755116
  32. Giselle CastilloStockton, CA 952021912444175
  33. Helena Castillo, PPSCLos Angeles, CA 900031750568671
  34. Isabella CastilloEl Centro, CA 922431275204026
  35. James Castillo, LCSWLong Beach, CA 908071740926674
  36. Jasmin CastilloNorthridge, CA 913251053130815
  37. Kara CastilloYorba Linda, CA 928861205284122
  38. Karina CastilloYreka, CA 960971689914244
  39. Katherine CastilloLos Angeles, CA 900171730792060
  40. Liliana CastilloLos Angeles, CA 900171639402605
  41. Lisa Castillo, LCSWFairfield, CA 945331134899453
  42. Lucille Castillo, MSW, LCSWTruckee, CA 961611255037453
  43. Mariela CastilloSan Francisco, CA 941241841729068
  44. Michelle CastilloHawthorne, CA 902501578946547
  45. Michelle Castillo, LCSWHawaiian Gardens, CA 907161043609787
  46. Porscha Castillo, LCSWOakland, CA 946121598266280
  47. Rosa Castillo, MSW, LCSWBell, CA 902011770805285
  48. Rossi Castillo, MSWSacramento, CA 958381265157028
  49. Sally CastilloOrange, CA 928681881864973
  50. Sandra Castillo, LCSWSan Diego, CA 921281538788138

Source: CMS NPPES, primary taxonomy 1041C0700X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 22 of 51 per resident

  1. Illinois109
  2. New Jersey105
  3. Alaska103
  4. California93
  5. Virginia93
  6. Delaware91
  7. 50 states and D.C.93

Source: CMS NPPES, primary taxonomy 1041C0700X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

6.0% of these records appear in a Medicare file, against 11.7% 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. California6.0%
  2. United States11.7%

Clinical Social Worker records in California, measured

  • In a Medicare file2,182 of 36,261 · 6.0% here, 11.7% nationally
  • In the CMS Doctors and Clinicians file4,012 · 11.1% here, 19.1% nationally
  • Not updated in five years or more16,389 · 45.2% here, 52.9% nationally
  • Median graduation year2012 · the 4,008 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 1041C0700X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

36,261 NPPES records list clinical social worker (1041C0700X) as their primary taxonomy with a practice address in California: 93 per 100,000 residents against 93 nationally (50 states and D.C.). Los Angeles has 4,806 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. New York29,293
  2. Massachusetts17,815
  3. Michigan17,644
  4. North Carolina15,561

States with a similar rate per 100,000

  1. Virginia92.9
  2. Delaware90.6
  3. Kentucky89.9
  4. Idaho89.1

The largest states

  1. New York29,293
  2. Massachusetts17,815
  3. Michigan17,644
  4. North Carolina15,561
  5. Illinois13,637

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.