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 228 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. Christian Sims, RNSacramento, CA 958141962211987
  2. Cynthia SimsParadise, CA 959691639406077
  3. Desiree SimsSanta Ana, CA 927011316769706
  4. Griselda SimsVan Nuys, CA 914051720633274
  5. Ellen Sin, RNOakland, CA 946071245156876
  6. Mekai Jaden Sin, RNSan Diego, CA 921261215884622
  7. Anne SinclairSanta Barbara, CA 931061003693896
  8. Catherine SinclairSanta Rosa, CA 954041396066023
  9. Kymberly Sinclair, RNSan Jose, CA 951131023538204
  10. Raychana Sinclair, RNSanta Ana, CA 927031669847547
  11. Amanda Singer, RNTarzana, CA 913561790444149
  12. Louisa Singer, RN, CRNFANorth Hills, CA 913431962503979
  13. Anisha SinghSacramento, CA 958251568259703
  14. Gurbir Singh, RNGarden Grove, CA 928401629608914
  15. Gurmeet Singh, RNBakersfield, CA 933051437978566
  16. Harjot SinghFresno, CA 937201922998012
  17. Jagdip Singh, RNManteca, CA 953361902695059
  18. Jasbir SinghHayward, CA 945441043994643
  19. Jasvir SinghStockton, CA 952021477833911
  20. Manjinder SinghFresno, CA 937031740091933
  21. Manju Singh, RNElk Grove, CA 957571043804305
  22. Melissa SinghSan Jose, CA 951301285091652
  23. Novejit SinghOakland, CA 946011386519577
  24. Pritam SinghLathrop, CA 953301164315479
  25. Raghbinder SinghTarzana, CA 913561851804637
  26. Rubina SinghMartinez, CA 945531073483244
  27. Steven SinghFairfield, CA 945341861176729
  28. Sukhdeep Singh, RNBakersfield, CA 933071285218008
  29. Katie Singletary, REGISTERED NURSEBerkeley, CA 947201740761287
  30. Amanda Singleton, RNSanta Rosa, CA 954041558749143
  31. Carey Singleton, RNEureka, CA 955011750056214
  32. Kelly Singleton, RNOrange, CA 928681053877647
  33. Melita Singson-GanitanoFairfield, CA 945341285425058
  34. Ashley SinklerHayward, CA 945451346192515
  35. Monica Siojo, RNSan Diego, CA 921011073038402
  36. Sarah SionTorrance, CA 905021962923953
  37. Maria Jacqueline SiosonOakland, CA 946091033992524
  38. Pamela Sipchen, RN, PHNSanta Ana, CA 927011235366105
  39. Kelly Siplinger, RNLos Angeles, CA 900071235972043
  40. Cirselda Siquian, RNGrand Terrace, CA 923131043406861
  41. Baratha Siregar, RNSanta Ana, CA 927031427783141
  42. John SiregarSan Bernardino, CA 924081811387574
  43. Alfred Siringo-RingoColton, CA 923241821632373
  44. Nirut SiriruxSan Bernardino, CA 924071689535916
  45. Hasija Sisic, RNHayward, CA 945411619188059
  46. Corazon Sison, RNElk Grove, CA 957571275305757
  47. Edna SisonClovis, CA 936191194421040
  48. Michael John Sison, RN, NP, RNFABakersfield, CA 933121275960882
  49. Debra Sisson, RNMartinez, CA 945531881088920
  50. Jennifer Sisson, MSN, RNMenifee, CA 925841558935627

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.