NPPES file of Aug 9, 2026

Orthopaedic Hand Surgery Physician in California

288 NPPES records list orthopaedic hand surgery physician with a practice address in California, 0.7 per 100,000 residents, the 38th 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 6 of 6.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207XS0106X · 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, 23

  1. Los Angeles23
  2. San Diego19
  3. Sacramento13
  4. San Francisco12
  5. Orange10

Orthopaedic Hand Surgery Physician records in California

  1. Robert Szabo, MDSacramento, CA 958171386634665
  2. Scott Tanaka, MDSan Diego, CA 921031881843050
  3. Cary Tanner, MDFresno, CA 937201942284096
  4. Ryan Tantone, MDTarzana, CA 913561316407505
  5. Nathan Taylor, M.D.Folsom, CA 956301770570566
  6. Allen Tham, MDFullerton, CA 928351578715801
  7. Arthur Thiel, M.D.Loma Linda, CA 923541164461539
  8. Darren Thomas, M.D.San Diego, CA 921341770768822
  9. Michael Thompson, M.D.La Jolla, CA 920371356313167
  10. Richard Tortosa, M.D.Yuba City, CA 959911114902202
  11. Gabriel Trainer, M.D.Ontario, CA 917611538349899
  12. Eugene Tsai, M.D.Los Angeles, CA 900481437474475
  13. Jerome Unatin, M.D.Torrance, CA 905051619084969
  14. Lindsey Urband, M.D.San Diego, CA 921231740422997
  15. Purab Viswanath, MDTarzana, CA 913561336374958
  16. Sahil Vohra, D.O.Ventura, CA 930031629428792
  17. John Waggoner, MD, MPHSan Diego, CA 921341104320076
  18. Lorenzo Walker, M.D.Oxnard, CA 930361649210725
  19. Joanne Wang, MDSimi Valley, CA 930651255727285
  20. Barry Watkins, M.D.Loma Linda, CA 923541689603011
  21. Christopher Wilson, MDSacramento, CA 958151043287618
  22. Peter WiltonChino Hills, CA 917091508286089
  23. Adi Wollstein, MDSacramento, CA 958151568950533
  24. Andrew Wong, M.D.Redlands, CA 923741891911202
  25. Charles Wong, D.O.Bakersfield, CA 933111255508131
  26. Priscilla Wong, NPPleasanton, CA 945881104646660
  27. Montri Wongworawat, M.D.Loma Linda, CA 923541235175035
  28. Dainn Woo, MDLos Angeles, CA 900481750919593
  29. Monica Wood, MDModesto, CA 953551740363605
  30. Kelly Wun, MDBurbank, CA 915051992196661
  31. Richard Wyzykowski, M.D.Walnut Creek, CA 945981376592360
  32. Brian Yang, MDWest Hills, CA 913071780145417
  33. Jeffrey Yao, MDRedwood City, CA 940631699821942
  34. Rebecca Yu, MDBerkeley, CA 947051306871231
  35. Christopher Zahiri, M.D.Beverly Hills, CA 902111679528236
  36. Norman Zemel, M.D.Los Angeles, CA 900451609871383
  37. Joanne Zhang, M.D.Newport Beach, CA 926601952764730
  38. Eli Ziv, M.D.Sherman Oaks, CA 914031083617666

Source: CMS NPPES, primary taxonomy 207XS0106X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 38 of 51 per resident

  1. Florida0.8
  2. Ohio0.8
  3. New Mexico0.8
  4. California0.7
  5. Georgia0.7
  6. Louisiana0.7
  7. 50 states and D.C.0.9

Source: CMS NPPES, primary taxonomy 207XS0106X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

85.1% of these records appear in a Medicare file, against 85.8% 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. California85.1%
  2. United States85.8%

Orthopaedic Hand Surgery Physician records in California, measured

  • In a Medicare file245 of 288 · 85.1% here, 85.8% nationally
  • In the CMS Doctors and Clinicians file214 · 74.3% here, 78.3% nationally
  • Not updated in five years or more170 · 59.0% here, 51.7% nationally
  • Median graduation year2004 · the 214 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207XS0106X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

288 NPPES records list orthopaedic hand surgery physician (207XS0106X) as their primary taxonomy with a practice address in California: 0.7 per 100,000 residents against 0.9 nationally (50 states and D.C.). Los Angeles has 23 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. New York199
  2. Florida183
  3. Texas182
  4. Illinois129

States with a similar rate per 100,000

  1. New Mexico0.8
  2. Georgia0.7
  3. Louisiana0.7
  4. Hawaii0.7

The largest states

  1. New York199
  2. Florida183
  3. Texas182
  4. Illinois129
  5. Pennsylvania118

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.