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 75 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. Vincent Oriente, M.D.Tarzana, CA 913561730411216
  2. Editha Orlino-Oliva, MDRedding, CA 960011538157615
  3. Nancy OrozcoSouth Pasadena, CA 910301417354663
  4. David Orr, ATCRohnert Park, CA 949281891714432
  5. Alysia OrtegaModesto, CA 953501174079503
  6. Jason OrtegaSan Francisco, CA 941031568989549
  7. Franklin Ortiz, DPTSeal Beach, CA 907401811237456
  8. Maria Ortiz, AAModesto, CA 953501881045763
  9. Natalie OrtizOakland, CA 946051306398284
  10. Nicole OrtizSan Pedro, CA 907311437876786
  11. Ralph Ortiz, MDRancho Mirage, CA 922701356361901
  12. Joanna Ortiz PradoLakeport, CA 954531427816933
  13. Omar OrtunoSacramento, CA 958171962291237
  14. Cael OsbornSacramento, CA 958171740149350
  15. Charles Osborn, MDSanta Ana, CA 927051619960077
  16. Frederick Osborne, M.D.San Andreas, CA 952491710174263
  17. Jake OsborneSeaside, CA 939551487484242
  18. Michael Osborne, PHYSICAL THERAPYEureka, CA 955011649202409
  19. Kevin Osburn, M.D.Santa Barbara, CA 931051992779219
  20. Randi Osburn, EDSBurlingame, CA 940101437935921
  21. Robert Ossorio, M.D.Sherman Oaks, CA 914031194162073
  22. Amanda OsteModesto, CA 953501962952812
  23. Arnold Ostrow, M.D.Los Alamitos, CA 907201932147824
  24. Catherine Osullivan, OTR/LSan Diego, CA 921231932592862
  25. Monika OsullivanConcord, CA 945201518839422
  26. Michelle Otani, OTRCarmichael, CA 956081881740454
  27. Sarah Otano, OTR/San Diego, CA 921281497178560
  28. Mary Jane OttePalo Alto, CA 943011952467524
  29. Bruce Ourieff, MDSanta Maria, CA 934541396780623
  30. Dilmonda Ousip, MSModesto, CA 953501376995506
  31. Douglas Ousterhout, MD, DDSSan Francisco, CA 941141922235332
  32. Thomas OuttSan Francisco, CA 941031467979047
  33. Furu OuyangSan Francisco, CA 941241023358827
  34. Amy OvadiaSan Francisco, CA 941021053732750
  35. Daniel Ovadia, M.D.Santa Barbara, CA 931031063620573
  36. Bo Owens, ATC, CSCSRohnert Park, CA 949281144328550
  37. Twyman OwensCompton, CA 902211699844837
  38. Tabatha Owens AddisonCarlsbad, CA 920111437494937
  39. Robin Oxman, M.D.Huntington Beach, CA 926461932274818
  40. Mark Oyama, M.D.Santa Monica, CA 904041669689220
  41. Julie Oyanguren, OTR/L, CHTEncino, CA 913161184882342
  42. Ahmet Oygar, M.D.San Diego, CA 921611417065418
  43. Geraldine Pablo, RPTCamarillo, CA 930121689697591
  44. Yasmin PaculbaSan Francisco, CA 941021720751365
  45. Francisco PadillaModesto, CA 953501386518801
  46. Nereida Padilla, CMTPorter Ranch, CA 913261417248774
  47. Samantha Padilla, PT, DPT, CCISan Diego, CA 921131427205376
  48. Ganga Padmesh, M.D.Elk Grove, CA 956241952481848
  49. Anaeva Padro, PTPomona, CA 917671922315357
  50. Ronald Page, MDCarmichael, CA 956081114389889

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.