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 17 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. Michael Hall, M.D.Harbor City, CA 907101902097959
  2. Domingo Hallare, MDSacramento, CA 958171659362903
  3. Mark Hambly, M.D.Sacramento, CA 958161669564167
  4. Howard HambrechtToluca Lake, CA 916021609944461
  5. Merlin Hamer, MDLa Jolla, CA 920371578541082
  6. Christopher Hamilton, M.D.Bakersfield, CA 933091598795130
  7. Nathan Hammel, MDEncinitas, CA 920241558435644
  8. Gareth Hammond, M.D.Long Beach, CA 908131134246150
  9. Dyson Hamner, M.D.San Diego, CA 921231508979501
  10. Michael Han, M.D.Sacramento, CA 958161144365529
  11. William Hanes, M.D.San Dimas, CA 917731386644920
  12. Andrew Hanflik, MDLos Alamitos, CA 907201508008178
  13. Michael Hannon, M.D.Beverly Hills, CA 902121043486137
  14. Cody HansenVan Nuys, CA 914051437787983
  15. Erik HansenSan Francisco, CA 941581023149044
  16. Eric Hanson, MDFresno, CA 937201013990811
  17. Peter Hanson, MDLa Mesa, CA 919421841216603
  18. Damayea Hargett, MDVentura, CA 930011669634101
  19. Sanaz Hariri, MDLos Gatos, CA 950321134255888
  20. Donald Harrington, MDYuba City, CA 959911467469130
  21. Arthur Harris, M.D.Oxnard, CA 930301841341807
  22. Irwin Harris, M.D.Bakersfield, CA 933051831152040
  23. Matthew Harrison, MDSanta Barbara, CA 931111912108051
  24. Nathan Hart, M.D.Stanford, CA 943051710174180
  25. James Hartford, MDPalo Alto, CA 943011922162502
  26. Gary Hartland, P.A.Redding, CA 960011851403075
  27. Thomas Hartley, M.D.Riverside, CA 925011164407391
  28. Molly Hartzler, MDRedding, CA 960011053757054
  29. Norah Harvey, M.D.Encinitas, CA 920241659570570
  30. Elana Harway, M.D.San Luis Obispo, CA 934051679506612
  31. Chester Hasday, M.D.Beverly Hills, CA 902101578563896
  32. Mohammad Hashemi, MDBakersfield, CA 933121750584355
  33. Mahad Hassan, M.D.Santa Monica, CA 904041245658012
  34. Duke Hasson, M.DOrange, CA 928681831489939
  35. Joshua Hatch, MDOakland, CA 946111881772689
  36. Laura Hatch, M.D.Los Alamitos, CA 907201568808210
  37. Brian Haus, MDSacramento, CA 958171356462824
  38. Darrell Hayes, M.D.Oakland, CA 946091932194529
  39. George Hayes, MDGridley, CA 959481912902677
  40. Yassamin Hazrati, MDVallejo, CA 945891558449371
  41. Kenneth Head, M.D.Glendale, CA 912081306959598
  42. Richard Heater, M.D.Sacramento, CA 958161164523569
  43. Jonah Hebert-Davies, MDOrange, CA 928681083050843
  44. Thomas Heer, M.D.Baldwin Park, CA 917061992817084
  45. Vishal Hegde, MDPalo Alto, CA 943011134563331
  46. Joel Heiser, MDVista, CA 920831407963945
  47. Farshid Hekmat, M.D.Los Angeles, CA 900351811028012
  48. Jamshid Hekmat, M.D.Los Angeles, CA 900351518098730
  49. James Helgager, MDOceanside, CA 920561316907413
  50. Mark Hellner, MDMerced, CA 953481659384881

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.