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 467 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. Heather NicholsonSan Diego, CA 921231477124402
  2. Jodie NicholsonSalinas, CA 939081821269499
  3. Melisa Nicholson, LCSWMission Viejo, CA 926911407206261
  4. Shaina Nicholson, MSWLos Angeles, CA 900441700306628
  5. Mary Nickel-Nguy, MSSW, LICSWNorth Highlands, CA 956601417401910
  6. Amber Nickell, ACSWSan Diego, CA 921111659989234
  7. Bailey NickellOntario, CA 917641801485024
  8. Kalene Nickelson, ASWSan Leandro, CA 945771811394133
  9. Elizabeth Nickens, M.S.W.Hayward, CA 945411912929811
  10. Lynn Nickens, M.S.W., LCSWVictorville, CA 923951114138252
  11. Danielle Nickerson, ACSW #125009Pomona, CA 917671083439186
  12. Karen Nickerson, LCSWMurrieta, CA 925621376140020
  13. Teshionda Nickerson, MSWPalo Alto, CA 943031972881431
  14. Wendy Nickerson, LCSWSan Diego, CA 921031679170575
  15. Neda Nickfardjam, LCSWEl Segundo, CA 902451558022343
  16. Lena Nicklas, LCSWSanta Ana, CA 927051942510011
  17. Amanda Nickles, LCSWTemecula, CA 925911750230959
  18. Tracy Nickloff, LCSWFullerton, CA 928351346726908
  19. Julann Nickolaisen, LCSWThousand Oaks, CA 913601770908873
  20. Brenda Nickolaison, LCSWSan Diego, CA 921231679675961
  21. Lisa NicolaLos Angeles, CA 900421093557951
  22. Luciano NicolaciLos Angeles, CA 900641417337064
  23. Lakana Nicolas, MHRSPasadena, CA 911071225231343
  24. Beatriz Nicolas Jimenez, ACSWLos Angeles, CA 900071366110769
  25. Katherine NicolauStockton, CA 952051891109484
  26. Jennifer Nicolet, MSW, MED, LCSWSan Jose, CA 951101093981474
  27. Caryn Nidelman-Rosen, LCSWCarlsbad, CA 920111861760902
  28. Guanhua NieSanta Clara, CA 950511477171619
  29. Christina Nieblas-Lowe, LCSWCerritos, CA 907031487217923
  30. Crystal Nielsen, MSWCrescent City, CA 955321609554765
  31. Rosemary NielsenBuena Park, CA 906201649755380
  32. Tiffany NielsenLos Angeles, CA 900011770733123
  33. Judith Nielson, LCSWFresno, CA 937051235410085
  34. Lark Nierenberg, LCSWSan Francisco, CA 941151679024855
  35. Katherine Nies, LCSWPetaluma, CA 949541922828458
  36. Frank Nieto, MSWCameron Park, CA 956821144439746
  37. Leticia NietoWest Covina, CA 917901235884149
  38. Anna Nieto Gomez, LCSWArleta, CA 913311710264288
  39. Dorothy Nieto Manzer, LCSWLos Angeles, CA 900891710823125
  40. Paola Nieto-AguayoSan Diego, CA 921031386197713
  41. Ana NievesFountain Valley, CA 927081699219667
  42. Ariana NievesSan Diego, CA 921711386152445
  43. Daniel NievesVan Nuys, CA 914061134242878
  44. Nancy NievesAntioch, CA 945091689388399
  45. Vitala NievesLos Angeles, CA 900121902026719
  46. Elizabeth Nieves-Robins, LCSWSylmar, CA 913421497284111
  47. Jamila Nightingale, LCSWBerkeley, CA 947031720804750
  48. Jenny NigroSacramento, CA 958231477073005
  49. Maritza NigroAltadena, CA 910011497903017
  50. Ethel Nikolakopoulos, LCSWConcord, CA 945201144823352

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.