NPPES file of Aug 9, 2026

Orthopaedic Surgery Physician in California

2,276 NPPES records list orthopaedic surgery physician with a practice address in California, 5.8 per 100,000 residents, the 49th highest rate of 51. Los Angeles and San Diego have the most; each record links to the provider's NPI and the California license search. Page 8 of 46.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207X00000X · method

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

Los Angeles has the most, 187

  1. Los Angeles187
  2. San Diego154
  3. San Francisco121
  4. Sacramento79
  5. La Jolla55

Orthopaedic Surgery Physician records in California

  1. Jason Chen, MDLoma Linda, CA 923541407241375
  2. Michael Chen, M.D.Los Angeles, CA 900331588824700
  3. Vincent Chen, M.DLos Angeles, CA 900271831197284
  4. Margaret Cheng, MDSan Jose, CA 951191235215765
  5. Timothy Cheng, M.D.Fountain Valley, CA 927081972940872
  6. Edward Cheung, MDLos Angeles, CA 900951942566872
  7. Norman Cheung, MDHayward, CA 945451407879984
  8. Sunny Cheung, M.D.Apple Valley, CA 923081932398526
  9. Yeukkei Cheung, M.D.Daly City, CA 940151912148438
  10. Frank ChiarappaSan Diego, CA 921031932536828
  11. Zachary Child, MDSouth Lake Tahoe, CA 961501053450072
  12. Dennis Chin, MDVallejo, CA 945891366520264
  13. Jason Chiu, M.D.Garden Grove, CA 928431962400440
  14. Daniel ChivasLos Angeles, CA 900891679657241
  15. Yung Cho, MDPico Rivera, CA 906601578667564
  16. Daniel ChoiTorrance, CA 905021902434301
  17. Gene Choi, MDRiverside, CA 925061164699120
  18. Stephen Choi, M.D.Rowland Heights, CA 917481003184680
  19. Jae Chon, M.D.Los Angeles, CA 900451578534301
  20. Deepak Chona, M.D.Redwood City, CA 940631205369964
  21. Albert Chong, MDPomona, CA 917671700819653
  22. Harvey Chou, M.D.Whittier, CA 906011265539316
  23. John Chow, MDSan Jose, CA 951281306922810
  24. Stephen Chow, MDApple Valley, CA 923071447296652
  25. Vincent Chow, M.D.San Francisco, CA 941431215265806
  26. Todd Christensen, MDGrass Valley, CA 959451740294321
  27. David Christian, MDRancho Mirage, CA 922701487115648
  28. Karl Christoffersen, MDSanta Cruz, CA 950651407835556
  29. John Chsae, MDSan Francisco, CA 941151932235421
  30. John Chu, M.D.Sacramento, CA 958161942286364
  31. Keolanui Chun, MDRiverside, CA 925071578507463
  32. Andrew Chung, DOLos Angeles, CA 900331750709036
  33. Emily Cidambi, MDSan Diego, CA 921231659634699
  34. William Cimino, MDWalnut Creek, CA 945961780762872
  35. Richard Claveria, M.D.Mission Viejo, CA 926911689637761
  36. Paul Clayman, MDSoquel, CA 950731780902346
  37. Christopher Clevenger, MDMonterey, CA 939401538142534
  38. Frederick Close, MDLa Mesa, CA 919421275643348
  39. Christopher Cochran, MDCamp Pendleton, CA 920551366781585
  40. Michael Coen, M.D.Highland, CA 923461023047438
  41. Kelly Coffey, D.O.Oceanside, CA 920581932137304
  42. Brad Cohen, M.D.Poway, CA 920641164536538
  43. Jessica Cohen-Brown, M.D.Santa Barbara, CA 931101144239567
  44. Jeffrey Colbert, M.D.Marina Del Rey, CA 902921487656286
  45. Frederic Collins, MDLos Gatos, CA 950321598808834
  46. Reinaldo Colon MorilloTwentynine Palms, CA 922781407411655
  47. Theresa Colosi, M.D.Los Gatos, CA 950321922160399
  48. Scott Colquhoun, MDTurlock, CA 953821144200692
  49. James Colville, MDSan Francisco, CA 941151336211176
  50. Clifford Colwell, M.D.La Jolla, CA 920371902871858

Source: CMS NPPES, primary taxonomy 207X00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 49 of 51 per resident

  1. Tennessee6.6
  2. Florida6.5
  3. Arizona6.2
  4. California5.8
  5. Nevada5.1
  6. Texas5.0
  7. 50 states and D.C.7.4

Source: CMS NPPES, primary taxonomy 207X00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

74.0% of these records appear in a Medicare file, against 76.5% 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. California74.0%
  2. United States76.5%

Orthopaedic Surgery Physician records in California, measured

  • In a Medicare file1,684 of 2,276 · 74.0% here, 76.5% nationally
  • In the CMS Doctors and Clinicians file1,347 · 59.2% here, 62.5% nationally
  • Not updated in five years or more1,493 · 65.6% here, 56.8% nationally
  • Median graduation year2003 · the 1,347 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207X00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,276 NPPES records list orthopaedic surgery physician (207X00000X) as their primary taxonomy with a practice address in California: 5.8 per 100,000 residents against 7.4 nationally (50 states and D.C.). Los Angeles has 187 of them (8%).

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. Texas1,514
  2. Florida1,470
  3. New York1,339
  4. Pennsylvania1,253

States with a similar rate per 100,000

  1. Arizona6.2
  2. Nevada5.1
  3. Tennessee6.6
  4. Alabama6.7

The largest states

  1. Texas1,514
  2. Florida1,470
  3. New York1,339
  4. Pennsylvania1,253
  5. Illinois995

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.