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 10 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. Francis Cyran, MDSanta Monica, CA 904041396828901
  2. Leah Cyran, M.D.Glendale, CA 912061962628388
  3. Brent D'Arc, M.D.Riverside, CA 925061265520233
  4. Roger Dainer, D.O.Pleasanton, CA 945881427053560
  5. Edward Damore, MDSan Jose, CA 951241144244682
  6. Alan Dang, MDSan Francisco, CA 941431376727974
  7. Alexis Dang, MDSan Francisco, CA 941431720119852
  8. Debbie Dang, MDPalo Alto, CA 943011427324326
  9. Larry Danzig, M.D.Santa Ana, CA 927051932178258
  10. Avilash Das, MDSan Francisco, CA 941581467031302
  11. Richard Dauphine, M.D.,FACSMonterey, CA 939401467440115
  12. Stephen Davenport, M.D.Hemet, CA 925441174619720
  13. Mark Davies, MDSan Jose, CA 951191609952126
  14. Alexander Davis, M.D.Modesto, CA 953551083669170
  15. Jeremiah Dawson, M.D.Willits, CA 954901356576946
  16. Thomas Day, M.D.Los Angeles, CA 900481356565741
  17. Frank De Mayo, M.D.Tracy, CA 953761861474520
  18. Daniel Debottis, MDOrange, CA 928681407019391
  19. Derek Dee, M.D.Huntington Beach, CA 926471669568457
  20. Richard Defrancisci, M.D.Paradise, CA 959691982629481
  21. Thomas Degenhardt, M.D.Santa Rosa, CA 954051073556635
  22. Dimitri Delagrammaticas, MDSan Luis Obispo, CA 934051881936128
  23. Eliana Delgado, MDSan Francisco, CA 941431801963020
  24. Eugene Dellamaggiore, M.D.San Jose, CA 951281457423147
  25. Allan Delman, M.D.San Pedro, CA 907311952598104
  26. Raymond Delorenzi, MDMerced, CA 953401104882539
  27. Douglas Dennis, M.D.Sacramento, CA 958171760473052
  28. Gerard Dericks, MDAlbany, CA 947061396992392
  29. John Desantis, D.O.Rancho Mirage, CA 922701245205137
  30. Donald DesantoWest Hollywood, CA 900481194179275
  31. Elizabeth Desmond, M. D.San Jose, CA 951281295774255
  32. Robert Detch, MDBurlingame, CA 940101558493189
  33. Sean Devine, M.D.San Luis Obispo, CA 934051447338678
  34. Sibel Deviren, MDSan Francisco, CA 941431760435655
  35. Vedat Deviren, MDSan Francisco, CA 941431730230459
  36. John Devries, M.D.Duarte, CA 910101174919799
  37. Bobby Dezfuli, M.D.Woodland Hills, CA 913671417186610
  38. Raja Dhalla, MDPomona, CA 917671730157876
  39. Harinder Dhanota, D.O.Yuba City, CA 959911184936973
  40. Harkeerat Dhillon, MDRiverside, CA 925071811972375
  41. Mohammad Diab, MDSan Francisco, CA 941431841243755
  42. Bernard Diamond, MDWest Hills, CA 913071154315000
  43. Edward Diao, MDSan Francisco, CA 941081427009794
  44. Ephraim Dickinson, M.D.Ukiah, CA 954821386957785
  45. Troy Dickson, M.D.Placerville, CA 956671063454445
  46. Richard Diehl, M.D.Pasadena, CA 911051417943127
  47. Glenn Diekmann, M.D.San Francisco, CA 941431467584326
  48. Adam Dietz, MD.Porter Ranch, CA 913261346384898
  49. Matthew Diltz, M.D.Rancho Mirage, CA 922701447456579
  50. Ali Dini, M.D.Encino, CA 914361518185537

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.