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 16 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. Carole Chacon, CCCE, CLE, IBCLCMission Hills, CA 913451922218866
  2. Ally Chae, MPTVentura, CA 930011154569887
  3. Neil Chafetz, M.D.San Pedro, CA 907321568599678
  4. Rachel Chaffin, A.A. DEGREEFresno, CA 937011326229394
  5. Premjit Chahal, M.D.Concord, CA 945201093893091
  6. Sukhjit Chahal, M.D.Fresno, CA 937201619080058
  7. Michael Chaikin, M.D.Los Angeles, CA 900671720157795
  8. Roslyn Chaisanguanthum, M.D.Sylmar, CA 913421174726954
  9. Suttirak ChaiwongkarjohnLancaster, CA 935341083879084
  10. Art Chakman, BS, CHTSunnyvale, CA 940871447507678
  11. Antonia Chalmers, M.D.Bakersfield, CA 933011962490391
  12. James ChalmersPlacerville, CA 956671902161813
  13. Israel Chambi, M.D.Santa Ana, CA 927051205870565
  14. Larry Chamow, PHDCarlsbad, CA 920081740307677
  15. Lorraine Champion, MDSanta Rosa, CA 954031932190949
  16. Brenna ChamplinSacramento, CA 958171932030053
  17. Cheng Fong ChanSan Francisco, CA 941031609538081
  18. Christine ChanSan Francisco, CA 941031295252674
  19. Connie ChanSacramento, CA 958171740128180
  20. Daniel ChanSan Francisco, CA 941331356417349
  21. Denise ChanSan Francisco, CA 941271598305955
  22. Jane Chan, MPTCerritos, CA 907031336307214
  23. Julia Chan, MDLos Gatos, CA 950321245303734
  24. Kelland ChanSan Francisco, CA 941021477908002
  25. Lawrence Chan, M.D.Sunnyvale, CA 940871669437380
  26. Linda ChanSan Francisco, CA 941101376985812
  27. Mark Chan, MDOakland, CA 946121871532945
  28. Millie ChanSan Francisco, CA 941031174703391
  29. Samuel Chan, M.D.Carmichael, CA 956081114987526
  30. Sun-Yin Chan, M.D.San Jose, CA 951281275636227
  31. Teresa ChanSan Francisco, CA 941031013476910
  32. Wan Chan, M.D.Los Banos, CA 936351912920430
  33. Wylie ChanSan Francisco, CA 941031891165049
  34. Maria Chandler, M.D.Long Beach, CA 908061174717862
  35. Stebbins Chandor, M.D.Los Angeles, CA 900891124167069
  36. Shanmuganathan Chandramohan, M.D.Apple Valley, CA 923071568453454
  37. Mark Chaney, A.T.C.Ventura, CA 930031912973777
  38. Catherine Chang, M.D.Newport Beach, CA 926601295766426
  39. Hau Chang, MDBakersfield, CA 933011861412926
  40. Kevin Chang, MD, PHDBaldwin Park, CA 917061730282252
  41. Kristoffer Chang, M.D.San Francisco, CA 941151790761336
  42. Kuang Chang, M.D.Monterey, CA 939401356696561
  43. Lyndon Chang, MDSan Diego, CA 921211275593261
  44. Moon Chang, M.D.Los Angeles, CA 900201275617714
  45. Wendy Chang Lee, M.D.Beverly Hills, CA 902101730245341
  46. Kenneth Channer, D.P.T.Santa Maria, CA 934541356621536
  47. Ellen Chapman, PTNorth Hollywood, CA 916061043542186
  48. William Chapman, M.D.National City, CA 919501164558920
  49. William Chapman, PAStockton, CA 952071659345254
  50. George Charnock, M.D.Valencia, CA 913551235292533

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.