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 102 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. Katy Caslav, MSWPasadena, CA 911071508351800
  2. Anne Casler, LCSWSanta Cruz, CA 950621194240499
  3. Lana CasperSanta Clara, CA 950541821127200
  4. Rosa Casquino, LCSWLancaster, CA 935341437743242
  5. Dennis Cassan, LCSWLaguna Niguel, CA 926771154425270
  6. Cynthia Cassano, LCSWSacramento, CA 958111033306634
  7. Catherine Cassel, M.S.W., L.C.S.W.Oakland, CA 946181639376965
  8. David Cassell, LCSWSan Rafael, CA 949031154481422
  9. Tami Cassell, LCSWEncino, CA 913161407209679
  10. Lori Casselman, LCSWRocklin, CA 957651962639120
  11. Colleen Cassidy, LCSWAnaheim, CA 928051619081981
  12. Sally Cassidy, LCSWLos Angeles, CA 900241407929102
  13. Scotti Cassidy, LCSWPalm Springs, CA 922621598268641
  14. Siobhan Cassidy, LCSWSan Diego, CA 921071326701541
  15. Cynthia Cassil, LCSWNewport Beach, CA 926601174616742
  16. Raquel Castagnetto, LCSW 66061Santa Clara, CA 950511750510335
  17. Adriana Castaneda, MSWReseda, CA 913351396522439
  18. Irma Castaneda, PH.D.Los Angeles, CA 900201154402170
  19. Jennifer Castaneda, MSW, LCSWGranada Hills, CA 913441679955108
  20. Jessica Castaneda, LCSWLos Angeles, CA 900271588341069
  21. Liza CastanedaSan Rafael, CA 949011285460634
  22. Madeline Castaneda, LCSWEl Cajon, CA 920211235632514
  23. Maythe CastanedaNorthridge, CA 913251497630339
  24. Melissa CastanedaLos Angeles, CA 900311508292822
  25. Natalie CastanedaNorthridge, CA 913251194332908
  26. Rocio CastanedaMoreno Valley, CA 925531922795723
  27. Sandra Castaneda, LCSWPerris, CA 925711518298264
  28. Thalia Castaneda, ASWPalm Springs, CA 922621174301626
  29. Vivian Castaneda, LCSWHacienda Heights, CA 917451821177817
  30. Yessica CastanedaLos Angeles, CA 900171912543455
  31. Mario Castaneda Martinez, MSWLos Angeles, CA 900221447928536
  32. Nohemi Castaneda MartinezSanta Rosa, CA 954071730503426
  33. Karen Castaneda-Campos, MSWWhittier, CA 906031447729330
  34. Ivy Castano, MSWTurlock, CA 953801811866015
  35. Gloria Castanon, ACSWNapa, CA 945591144876582
  36. Monica CastanonCamarillo, CA 930121356917231
  37. Stephanie CastanonRiverside, CA 925031730557273
  38. Yvette CastanonJurupa Valley, CA 925091881028710
  39. Paola Castanos, LCSWLos Angeles, CA 900311952678260
  40. Brenda Casteau, LCSWOrange, CA 928681558670570
  41. Daniela Castejon, LCSWSan Diego, CA 921011659018729
  42. Michael Castellana, LCSWSan Diego, CA 921231134209968
  43. Loretta Castellano, MSW, LCSWMenlo Park, CA 940251942332275
  44. Angela Castellanos, LCSWTorrance, CA 915021578823142
  45. Angelina Castellanos, ASWLos Angeles, CA 900281750605804
  46. Ivonne CastellanosGranada Hills, CA 913441265700322
  47. Julissa CastellanosSanta Clarita, CA 913501386236123
  48. Katrina CastellanosRoseville, CA 956781942894035
  49. Mariajose CastellanosLos Angeles, CA 900331871012641
  50. Natalie Castellanos, MSWSan Bernardino, CA 924041396337978

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.