NPPES file of Aug 9, 2026

Registered Nurse in California

13,506 NPPES records list registered nurse with a practice address in California, 35 per 100,000 residents, the 30th highest rate of 51. San Diego and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 242 of 271.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 163W00000X · method

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

San Diego has the most, 1,223

  1. San Diego1,223
  2. San Francisco625
  3. Los Angeles526
  4. Sacramento508
  5. Fresno500

Registered Nurse records in California

  1. Mylie Thach, B.S.NSan Diego, CA 921111548182462
  2. Melissa Thacher, R.N.San Marcos, CA 920691811272909
  3. Vivien Thai, RNClovis, CA 936191851988802
  4. Yvonne Thai, RNOakland, CA 946071154249738
  5. Regina Thammavongsa, RNSan Diego, CA 921011801259080
  6. Linnapat Thanawong, RNSan Diego, CA 921031477434751
  7. Soosan ThankachanLoma Linda, CA 923571114841103
  8. Gao ThaoFresno, CA 937211649492794
  9. Kia Thao, RNFresno, CA 937201356938211
  10. Me ThaoFresno, CA 937031003736331
  11. Nou Thao, RNSacramento, CA 958271558071076
  12. Sandy Thao, R.N.Fresno, CA 937271417380643
  13. Yia ThaoChico, CA 959261023696523
  14. Ambika ThapaCarmichael, CA 956081740969674
  15. Mona ThapaSanta Cruz, CA 950621326868407
  16. Prekshya ThapaSan Francisco, CA 941091285528067
  17. Radhika ThapaAntelope, CA 958431326492646
  18. Maria Tharakan, RNEl Cajon, CA 920191265976187
  19. Ashley TharayilPalo Alto, CA 943051982575478
  20. Kristen Tharp, R.N.Fort Irwin, CA 923111013062702
  21. Lisa Thebeau, RN BSNSan Ramon, CA 945831659920718
  22. Katherine ThedeSanta Ana, CA 927051396166328
  23. Dawn Thekkumthottam, RNFresno, CA 937031851286793
  24. Diane Thelen, RNTahoe City, CA 961451831268291
  25. Amanda Theolet, CLINICAL NURSE LEADESan Francisco, CA 941211720600364
  26. Long ThiColton, CA 923241407473341
  27. Marquel Thibeaux Andrews, RNFairfield, CA 945331023449816
  28. Ascension Thiele-Ruiz, RNRoseville, CA 956611114554409
  29. Naomi ThiruRiverside, CA 925071144885476
  30. Anna Thomas, RNSan Diego, CA 921211811757776
  31. Barbara Thomas, RN BSN PHNSan Diego, CA 921101760817373
  32. Belinda Thomas, RNFairfield, CA 945341285413286
  33. Brittany ThomasSan Diego, CA 921191275102261
  34. Clarissa ThomasFresno, CA 937211487876553
  35. Connie Thomas, RNBerkeley, CA 947201467966002
  36. Diane Thomas, L.AC., R.N.Walnut Grove, CA 956901144745589
  37. Hayden ThomasFrench Camp, CA 952311730048877
  38. Ikuko ThomasSan Diego, CA 921101568880284
  39. Janelle Thomas, RNSan Leandro, CA 945791316860331
  40. Jennifer Thomas, RN, BSNCarlsbad, CA 920111124974613
  41. Jennifer Thomas, RNPlacerville, CA 956671144172339
  42. Karen Thomas, R.N.Arcata, CA 955211700914793
  43. Kim Thomas, R.N.Concord, CA 945201770875635
  44. Lauren Thomas, RNSan Diego, CA 921611073777942
  45. Lizykutty ThomasPleasanton, CA 945881063963221
  46. Manju Mary ThomasSan Jose, CA 951291760351399
  47. Melissa Thomas, RNSan Diego, CA 921011891332888
  48. Michelle ThomasSanta Barbara, CA 931101831254929
  49. Nisha Thomas, R.N.French Camp, CA 952311386109577
  50. Susan Thomas, RNSan Francisco, CA 941101841623329

Source: CMS NPPES, primary taxonomy 163W00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 30 of 51 per resident

  1. Maryland40
  2. Arkansas40
  3. Oklahoma36
  4. California35
  5. Kansas34
  6. South Carolina33
  7. 50 states and D.C.44

Source: CMS NPPES, primary taxonomy 163W00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

2.5% of these records appear in a Medicare file, against 1.5% 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. California2.5%
  2. United States1.5%

Registered Nurse records in California, measured

  • In a Medicare file343 of 13,506 · 2.5% here, 1.5% nationally
  • In the CMS Doctors and Clinicians file146 · 1.1% here, 1.0% nationally
  • Not updated in five years or more7,263 · 53.8% here, 57.2% nationally
  • Median graduation year2018 · the 146 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 163W00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

13,506 NPPES records list registered nurse (163W00000X) as their primary taxonomy with a practice address in California: 35 per 100,000 residents against 44 nationally (50 states and D.C.). San Diego has 1,223 of them (9%).

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. Ohio9,656
  2. Texas8,921
  3. Washington5,708
  4. Michigan5,589

States with a similar rate per 100,000

  1. Kansas33.9
  2. Oklahoma35.9
  3. South Carolina32.8
  4. Vermont31.0

The largest states

  1. New York25,740
  2. Ohio9,656
  3. Texas8,921
  4. Washington5,708
  5. Michigan5,589

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.