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 99 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. Melissa SteyskalLakeport, CA 954531104678762
  2. Ethan StiffelmanEncino, CA 913161639967383
  3. James StillwellSan Francisco, CA 941031093918898
  4. Aneta Stirling, M.D.Rancho Mirage, CA 922701952527541
  5. Daphne Stoermer, PHYSICAL THERAPISTDanville, CA 945261821161084
  6. David Stoker, M.DMarina Del Rey, CA 902921770618480
  7. Alexis StokesBakersfield, CA 933011255727368
  8. David Stoll, M.D.Beverly Hills, CA 902121457330169
  9. Seymour Stoll, M.D.Torrance, CA 905031982812046
  10. Andrew Stolz, M.D.Los Angeles, CA 900331730346891
  11. Bryan Stone, M.D.Palm Springs, CA 922621225095383
  12. Honor Stone, M.D.Menlo Park, CA 940251962425496
  13. Kevin Stone, MDSan Francisco, CA 941231104991769
  14. Louisa Stone, MSW, LCSWSan Francisco, CA 941181053566984
  15. Lani Stoner, LMFTStockton, CA 952071811067713
  16. Michelle Storey, P.T.A.Rancho Santa Margarita, CA 926881891900320
  17. Chris Storgard, M.D.San Diego, CA 921311518205343
  18. Sheila Stosick, MS, OTR/LLafayette, CA 945491083964167
  19. Joanna Stover, MS, ATCSanta Monica, CA 904041477917771
  20. Alan Strachan, PH.D.Aptos, CA 950031588811202
  21. Ferris StrachanBeverly Hills, CA 902101629498944
  22. Nina StradtnerOakland, CA 946091639201494
  23. Ronald Strahan, MDSanta Monica, CA 904041023214954
  24. John Strauss, M.D.San Diego, CA 921031225148356
  25. Robert StrierMarina Del Rey, CA 902921649713561
  26. Margaret Stroad, PHDSan Francisco, CA 941271255540282
  27. James StrohSan Francisco, CA 941031700071461
  28. Frank Strona, PHDCSan Francisco, CA 941021467873398
  29. Howard Strong, M.D.Fremont, CA 945381871531178
  30. Richard Stryker, M.D.Los Angeles, CA 900361548273709
  31. Regan Stuart, MDPalo Alto, CA 943041427101492
  32. Cynthia Sturdivant, M.D.Modesto, CA 953561710187976
  33. Derrick Su, MDFountain Valley, CA 927081740569789
  34. Weiyang Su, M.D.Newbury Park, CA 913201861493058
  35. Gerald SuarezSan Francisco, CA 940151629588272
  36. Andreas Subadya, M.D.Arcadia, CA 910071528148350
  37. David Suchard, M.D.Santa Rosa, CA 954011629103205
  38. Corinne Sugihara, M.D.Newport Beach, CA 926601801808092
  39. Kyler Sugiyama, DPTEncinitas, CA 920241821769274
  40. Christopher SulhoffModesto, CA 953501497200224
  41. Dennis Sullivan, M.D.Sacramento, CA 958161992749964
  42. Devyn SullivanModesto, CA 953501215380381
  43. Lisa SullivanMission Viejo, CA 926921144579418
  44. Michelle Sullivan, DPTPasadena, CA 911041003040858
  45. Sarah SullivanSouth San Francisco, CA 940801164602785
  46. Muhammad SulmanSacramento, CA 958281922826007
  47. Marguerite Sumadchat, PTChino, CA 917101295064376
  48. Danielle SumlerOakland, CA 946091104293901
  49. Maria SumnerOakland, CA 946051356492144
  50. Guifeng Sun, M.D.Riverside, CA 925051255593026

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.