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 18 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. Shin Chiu, M.D.Downey, CA 902411851323794
  2. Hae-Young Cho, M.D.Fountain Valley, CA 927081760584551
  3. Edward Chock, M.D.Oakdale, CA 953611154423994
  4. Norman Chock, M.D.Oakdale, CA 953611053416982
  5. Jacobo Chodakiewitz, M.D.Los Angeles, CA 900351720263924
  6. Soo-Sang Choe, M.D.Hemet, CA 925431477559532
  7. Ae Sook Choi, FIT001CALakewood, CA 907151144236001
  8. Brian Choi, M.D.Riverside, CA 925011386602720
  9. Lily ChoiSan Francisco, CA 941031699292276
  10. Myung Choi, M.D.Los Angeles, CA 900041679650675
  11. Sharon Choi, M.D.West Covina, CA 917901740340009
  12. Young Choi, CPOSan Bernardino, CA 924051154588846
  13. Josebelo Chong, MDStockton, CA 952101891815791
  14. Margarita ChongSouth Pasadena, CA 910301982002077
  15. Mark ChorjelParadise, CA 959691356548390
  16. Philip Chorosevic, OTR/LSan Diego, CA 921341972575538
  17. Bing ChouIrvine, CA 926141093169328
  18. Ranjiv Choudhary, M.D.Palmdale, CA 935511790746014
  19. William Chow, D.O.Oakland, CA 946091417981192
  20. Tabassum Chowdhury, M.D.Bakersfield, CA 933091942215751
  21. Gena ChristLa Habra, CA 906311750712402
  22. Ashley Christensen, MDLos Angeles, CA 900331912842709
  23. Linda Christensen, PTSan Diego, CA 921101811034028
  24. Jenelle ChristianOceanside, CA 920561295249597
  25. Mary ChristianLos Angeles, CA 900161245409168
  26. Cecilia Chu, M.D.Los Alamitos, CA 907201396713814
  27. Jane ChuSan Francisco, CA 941021629499116
  28. Shun Leung ChuPleasant Hill, CA 945231417416561
  29. Stella ChuSan Francisco, CA 941101003355595
  30. Yu Hsiang Chu, LACIrvine, CA 926181255920187
  31. Kanglin ChuangSan Francisco, CA 941181396116646
  32. Jason ChuiSan Francisco, CA 941101124574660
  33. G. Michael Chun, M.D.Irvine, CA 926181578590899
  34. Wesley Chun, PTTujunga, CA 910421619156817
  35. Grace ChungSanta Barbara, CA 931111992962955
  36. Hsing Chung, M.D.Anaheim, CA 928011891723946
  37. Jina Chung, M.D.Torrance, CA 905021558450668
  38. Peter Chung, M..DLos Angeles, CA 900481922014257
  39. Michael Churukian, M.D.Beverly Hills, CA 902101306925474
  40. Raymond Chyu, M.D.San Jose, CA 951311689615312
  41. Anthony Ciarolla, M.D.Long Beach, CA 908061922068881
  42. Joel Cipres, PHYSICAL THERAPISTPomona, CA 917661427498195
  43. Janet CisnerosSanta Ana, CA 927051689323370
  44. Jenae Ciuffreda, CSOM, CBBAEscondido, CA 920251154770089
  45. Teresa CiulloSan Diego, CA 921021528483765
  46. Zoanne Clack, M.D.Montebello, CA 906401174582399
  47. Eric Clark, M.D.Irvine, CA 926041932284478
  48. Stevan Clark, M.D.Los Angeles, CA 900471376616227
  49. Zarinah ClarkPinole, CA 945641083467211
  50. Michelle ClarkeN Hollywood, CA 916051245765791

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.