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 31 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. Ryan O'Shea, MDSan Francisco, CA 941171669752077
  2. Michael Oberlander, MDLafayette, CA 945491063525244
  3. Michael Oberto, MDFresno, CA 937201801899232
  4. Denise Ochoa, PA-CElk Grove, CA 957581518636307
  5. Jonathan Ochoa, MDBrentwood, CA 945131215424254
  6. Ninos Oda, M.D.Victorville, CA 923941992130405
  7. Michael Oechsel, M.D.Larkspur, CA 949391235186206
  8. Brent Ogawa, M.D.Los Angeles, CA 900891578787016
  9. Levon Ohanisian, MDStanford, CA 943051104445147
  10. Jonathan Oheb, MDEncino, CA 913161003132127
  11. Ogaga Ojameruaye, MDSan Diego, CA 921031942839030
  12. David Oliver, MDAuburn, CA 956031528058229
  13. Kirstina Olson, M.D.San Francisco, CA 941581215108709
  14. Leslie Olson, M.D.Fresno, CA 937211427032812
  15. Oluwadamilola OluyedeBakersfield, CA 933091558758185
  16. Patrick Omeara, M.D.Escondido, CA 920251841290509
  17. Andrew Opfell, MDDavis, CA 956161689770281
  18. Philip Orisek, M.D.Folsom, CA 956301700812955
  19. Sara Orr, MDVan Nuys, CA 914051700412699
  20. Matthew OrringerLos Angeles, CA 900331760124986
  21. David Osborne, MDVallejo, CA 945891093893836
  22. Vic Osborne, M.D.West Covina, CA 917901659317733
  23. Bradley Osemwengie, MDStanford, CA 943051588241194
  24. Patrick Osgood, M.D.Folsom, CA 956301396724209
  25. John Osterkamp, M.D.Glendale, CA 912081467492074
  26. Amy Ostrofe, MDGinowan, CA 963621942569645
  27. Karimdad Otarodi, M.D.Rancho Mirage, CA 922701518253046
  28. Ryan OuilletteLos Angeles, CA 900241760016000
  29. Tye Ouzounian, MDTarzana, CA 913561902876709
  30. Eric Owashi, M.D.Lancaster, CA 935341396123857
  31. Jonas Owen, MDLos Angeles, CA 900271962815118
  32. Robert Pace, MDMurrieta, CA 925621184681470
  33. Donald Pacheco, FNP PACFresno, CA 937101942297320
  34. Patrick Padilla, M.D.Encinitas, CA 920241225041676
  35. James Page, MDMountain View, CA 940401720169352
  36. Eric Pagenkopf, M.D.Clovis, CA 936111881762896
  37. Gary Painter, M.D.Loma Linda, CA 923541184745580
  38. Ariel Palanca, M.D.Stanford, CA 943051629203971
  39. Winnie Palispis, M.D.Orange, CA 928681134569106
  40. Chris Pallia, MDCoronado, CA 921181497751457
  41. Frank PalumboSacramento, CA 958171497776603
  42. Noel Palumbo, MDVallejo, CA 945891962069336
  43. David Pang, MDFremont, CA 945381770644510
  44. William Pannell, MDLos Angeles, CA 900331972913762
  45. Christina Pantazopoulos, DOLake Elsinore, CA 925321073829685
  46. Andrew Park, MDAnaheim, CA 928061184945784
  47. Kevin Park, M.D.Downey, CA 902411093823494
  48. Min Jung Park, MD, MMSCLancaster, CA 935341700048279
  49. Ryan Park, OT-CEncinitas, CA 920241144322363
  50. Samuel Park, MDMission Viejo, CA 926911710181854

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.