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 35 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. Lisa Ronback, M.D.Jackson, CA 956421790786523
  2. Barry Rose, M.DFremont, CA 945381205909868
  3. Taryn Rose, M.D.Beverly Hills, CA 902121265781538
  4. Adam Rosen, D.O.La Jolla, CA 920371780656728
  5. A. Rosenfield, M.D.La Jolla, CA 920371588648968
  6. Scott Rosenzweig, M.D.Santa Monica, CA 904011841273091
  7. Alexander Rosinski, MDSan Francisco, CA 941171649891250
  8. Alessandra Ross, MDArcata, CA 955211275643199
  9. Steven Ross, M.D.Orange, CA 928681558364836
  10. Timothy Ross, MDSanta Ana, CA 927061548347057
  11. Brian Rothi, M.D.Whittier, CA 906021932253952
  12. Philip Rotter, MDSanta Ana, CA 927051780911495
  13. Amir Rounaghi, M.D.Whittier, CA 906031336104538
  14. Michael RouxLos Angeles, CA 900331821206830
  15. Kasra Rowshan, MDNewport Beach, CA 926631942463112
  16. David Roy, M.D.Salinas, CA 939011659788107
  17. Gabriel Rubanenko, M.D.Los Angeles, CA 900481194704643
  18. Roy Rubin, MDSacramento, CA 958251376577411
  19. Kim Ruby, MDSan Diego, CA 921111295150365
  20. David Ruckle, MDColton, CA 923241699338913
  21. Guy Rudin, M.D.Yuba City, CA 959911629089941
  22. Charles Rudner, M.D.Santa Ana, CA 927051720055734
  23. Charles Rudolph, MDLa Jolla, CA 920371386636348
  24. Jeffrey Ruland, M.D.Los Angeles, CA 900481184251498
  25. William Rumack, M.D.West Hills, CA 913071740257542
  26. Claire Rushin, MDPalo Alto, CA 943041326743840
  27. Deirdre Ryan, MDLos Angeles, CA 900271982678025
  28. Steven Ryder, MDRoseville, CA 956611801974571
  29. Garrett Ryle, MDSacramento, CA 958161013014265
  30. Ralph Rynning, M.D.San Diego, CA 921201952595316
  31. Richard Ryu, M.D.Santa Barbara, CA 931051356366488
  32. Ardavan SaadatMurrieta, CA 925621184011058
  33. Eric Sabety, MDYreka, CA 960971326033861
  34. Mario Sablan, D.O.Merced, CA 953401962618462
  35. Cameron Sadeghi, M.D.San Diego, CA 921111891986154
  36. John Safanda, MDSan Rafael, CA 949031598849663
  37. Christian Safian, M.D.Fresno, CA 937201316016751
  38. Daljeet Sagoo, DOSan Diego, CA 921231487823787
  39. Fadi Saied, D.O.Bakersfield, CA 933091013179712
  40. Atul Saini, DOCulver City, CA 902321699295170
  41. Peter Salamon, MDStockton, CA 952041851381131
  42. Isaias Salazar, MDOntario, CA 917611619038460
  43. Hytham Salem, MDSan Diego, CA 921201497332530
  44. Justin Saliman, M.D.Los Angeles, CA 900481346250107
  45. Sanjum Paul Samagh, M.D.Encinitas, CA 920241952716524
  46. Babak Samimi, M.D.Los Angeles, CA 900251912121377
  47. Thomas Sampson, MDSan Francisco, CA 941151386679421
  48. Robert Samson, M.D.Calabasas, CA 913021407999170
  49. Rahul Samtani, M.D.Bakersfield, CA 933111336535111
  50. Marcel SanchezStanford, CA 943051700463700

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.