NPPES file of Aug 9, 2026

Specialist in California

5,749 NPPES records list specialist with a practice address in California, 15 per 100,000 residents, the 19th highest rate of 51. San Francisco and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 73 of 115.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 174400000X · method

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

San Francisco has the most, 666

  1. San Francisco666
  2. Los Angeles301
  3. Sacramento241
  4. San Diego207
  5. Oakland198

Specialist records in California

  1. Maria Nogra, PHYSICAL THERAPYBurbank, CA 915061750419131
  2. Christine Nolan, O.T.R.Temecula, CA 925901841447331
  3. Cynthia Nolan, RPTFairfield, CA 945331053698977
  4. Carmen NolascoSan Francisco, CA 941021932520632
  5. Steven NomuraLos Angeles, CA 900241962963710
  6. Zainab NoorsherSacramento, CA 958171467257329
  7. Karen NordbackSanta Rosa, CA 954041245154863
  8. Anna NormanSanta Clara, CA 950501598413296
  9. Lora Norman, OTR/L CHTSan Diego, CA 921271457676603
  10. Stacy Norman, P.A.Laguna Hills, CA 926531417146655
  11. Karl Norris, MDBeverly Hills, CA 902121356452734
  12. Kate Northcott, MFCSan Francisco, CA 941311730208976
  13. Christopher Norton, BSModesto, CA 953501740727098
  14. Afsaneh Nourin, M.D.La Mesa, CA 919421144288762
  15. Anne Novick, DPTPalo Alto, CA 943061487889986
  16. Andrew Novom, MDSan Pedro, CA 907311346295391
  17. Priscilla Novom, MDSan Pedro, CA 907311518914191
  18. Arash Nowain, MDBeverly Hills, CA 902121003084120
  19. Samantha NowellAuburn, CA 956031508395906
  20. Stephen Nozetz, MDEncinitas, CA 920241063528412
  21. Karen Nugent, P.T., C.H.T.Corte Madera, CA 949251679562649
  22. Shary Nunan, PH.D.Oakland, CA 946111346473865
  23. Francine Nunes, MFTAuburn, CA 956031447474788
  24. Lina NunezRiverside, CA 925061558022160
  25. Richard NunezSan Francisco, CA 941161013345222
  26. Rudy Nunez, C.P.Anaheim, CA 928051306873799
  27. Nick Nurani, M.D.Rancho Mirage, CA 922701881603488
  28. Richard Nussbaum, M.D.Sherman Oaks, CA 914031972528297
  29. Marcella NuttingSan Rafael, CA 949031629401906
  30. Victoria Nwafor-Anene, M.D.Redlands, CA 923731447423488
  31. Elizabeth NwaniElk Grove, CA 957581386118073
  32. Debra Nyland Jarvis, MSNewcastle, CA 956581649521980
  33. Craig O'BrienSan Francisco, CA 941031033605340
  34. Lisa O'BrienPalm Desert, CA 922601497145114
  35. Richard O'Brien, M.D.San Diego, CA 921091619084944
  36. Helen O'Connell, IBCLCLos Angeles, CA 900261417167578
  37. Michelle O'Connor, OTR/L,CHTDanville, CA 945261215187331
  38. John O'Dea, M.D.Los Angeles, CA 900251902836273
  39. Iris O'NealBerkeley, CA 947051275488579
  40. Kelly O'Neil, M.D.Temecula, CA 925911396081006
  41. Sarah O'Neil, LMTSolana Beach, CA 920751508009531
  42. Aries O'NeillSan Francisco, CA 941031568203461
  43. Audrey O'NeillFullerton, CA 928311730536871
  44. Robert O'NeillSan Francisco, CA 941031558880195
  45. Heather O'SheaSan Diego, CA 921031538316930
  46. Glen O'Sullivan, M.D.Mount Shasta, CA 960671972504652
  47. Douglas Obana, MPHSan Francisco, CA 941021902228083
  48. Osagie ObanorLos Angeles, CA 900111295220093
  49. Kristin ObrienEncinitas, CA 920241386038230
  50. Annie OcampoSan Diego, CA 921231851514749

Source: CMS NPPES, primary taxonomy 174400000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 19 of 51 per resident

  1. Massachusetts16
  2. West Virginia15
  3. Maryland15
  4. California15
  5. Minnesota15
  6. Delaware13
  7. 50 states and D.C.18

Source: CMS NPPES, primary taxonomy 174400000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

29.6% of these records appear in a Medicare file, against 17.0% 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. California29.6%
  2. United States17.0%

Specialist records in California, measured

  • In a Medicare file1,704 of 5,749 · 29.6% here, 17.0% nationally
  • In the CMS Doctors and Clinicians file1,076 · 18.7% here, 11.1% nationally
  • Not updated in five years or more4,403 · 76.6% here, 77.3% nationally
  • Median graduation year1989 · the 1,075 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 174400000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

5,749 NPPES records list specialist (174400000X) as their primary taxonomy with a practice address in California: 15 per 100,000 residents against 18 nationally (50 states and D.C.). San Francisco has 666 of them (12%).

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. Florida2,685
  2. Washington2,609
  3. Pennsylvania2,031
  4. Texas1,716

States with a similar rate per 100,000

  1. Minnesota14.6
  2. Maryland15.2
  3. West Virginia15.4
  4. Massachusetts15.7

The largest states

  1. New York22,636
  2. Florida2,685
  3. Washington2,609
  4. Pennsylvania2,031
  5. Texas1,716

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.