NPPES file of Aug 9, 2026

Urology Physician in California

1,524 NPPES records list urology physician with a practice address in California, 3.9 per 100,000 residents, the 37th 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 30 of 31.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 208800000X · 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, 226

  1. Los Angeles226
  2. San Diego90
  3. San Francisco88
  4. Orange56
  5. Sacramento43

Urology Physician records in California

  1. Alan Wong, M.D.Grass Valley, CA 959451740237163
  2. Jonathan Wong, M.D.Palo Alto, CA 943041497795199
  3. Kelvin Wong, MDOxnard, CA 930301710117932
  4. Melissa WongLa Mesa, CA 919421194284166
  5. Roland Wong, M.D.Hayward, CA 945451134156946
  6. Vincent WongSan Bernardino, CA 924041316302441
  7. Jason Woo, MDSan Diego, CA 921031437380086
  8. Erika Wood, M.D.Los Angeles, CA 900331700240017
  9. James Woolley, M.D.St Helena, CA 945741225037757
  10. Steven Workman, MDRoseville, CA 956611699853309
  11. Stephen Worsham, M.D.Salinas, CA 939011649294133
  12. Alex Wu, M.D.South San Francisco, CA 940801063747152
  13. Henry Wu, M.D.Los Alamitos, CA 907201659489268
  14. Jonathan Wu, MDAnaheim, CA 928061710148861
  15. Li-Chih Wu, MDMonterey Park, CA 917541831106525
  16. Simon Wu, M.D.La Mesa, CA 919421477721207
  17. Melanie Wuerstle, M.D.Los Angeles, CA 900271982847752
  18. Steven Wunschel, MDModesto, CA 953551396750105
  19. Weiwei Xu, MDCastro Valley, CA 945461992837702
  20. Ramy Yaacoub, M.D.Orange, CA 928681467730390
  21. Atef Yacoub, M.D.Montebello, CA 906401740339894
  22. Naveen Yadav, M.D.San Jose, CA 951191457611048
  23. Faysal Yafi, MDOrange, CA 928681285854927
  24. Alan Yaghoubian, MDValencia, CA 913551922481167
  25. Philip Yalowitz, M.D.Los Angeles, CA 900481487614194
  26. Alan Yamada, MDArcadia, CA 910071760456040
  27. Ronald Yamaguchi, MDSanta Clara, CA 950511104905843
  28. Yuka Yamaguchi, M.D.Palo Alto, CA 943011114192119
  29. Jonathan Yamzon, M.D.Duarte, CA 910101093943854
  30. Qingwei Yan, M.D.Oakland, CA 946091003995648
  31. Benjamin Yang, M.D.Riverside, CA 925061235356999
  32. Hailiu Yang, M.D.Modesto, CA 953551972986461
  33. Jason YangWest Hollywood, CA 900481023964442
  34. Patrick Yang, DOVentura, CA 930031649893355
  35. Ronald Yang, MDBellflower, CA 907061316095334
  36. Serena Yang-Loudin, MDStanford, CA 943051649613365
  37. Daniel Yao, M.D.Palo Alto, CA 943011619048972
  38. David Yao, M.D.Santa Monica, CA 904041831269851
  39. Stanley Yap, MDSacramento, CA 958171639140874
  40. Uzay Yasar, MDModesto, CA 953501811980105
  41. Nancy Ye, MDSanta Monica, CA 904041881198422
  42. Todd Yecies, M.D.Burlingame, CA 940101134546054
  43. Alyssa Yee, MDLa Jolla, CA 920371598158842
  44. David Yee, M.D.Roseville, CA 956611639225675
  45. Jay Yew, M.D.San Diego, CA 921271952412249
  46. Jenny Yiee, MDLos Angeles, CA 900951477794717
  47. Jessica Yih, MDOrange, CA 928681255774113
  48. Felix Chi-Ming Yip, M.D.Monterey Park, CA 917541912088162
  49. Wesley Yip, M.D.Duarte, CA 910101053773481
  50. Gerald Yoon, M.D.Whittier, CA 906051477602308

Source: CMS NPPES, primary taxonomy 208800000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 37 of 51 per resident

  1. Oklahoma4.0
  2. Iowa4.0
  3. Hawaii4.0
  4. California3.9
  5. Delaware3.8
  6. Arizona3.7
  7. 50 states and D.C.4.3

Source: CMS NPPES, primary taxonomy 208800000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

81.6% of these records appear in a Medicare file, against 79.8% 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. California81.6%
  2. United States79.8%

Urology Physician records in California, measured

  • In a Medicare file1,244 of 1,524 · 81.6% here, 79.8% nationally
  • In the CMS Doctors and Clinicians file1,050 · 68.9% here, 66.7% nationally
  • Not updated in five years or more902 · 59.2% here, 57.2% nationally
  • Median graduation year2003 · the 1,049 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 208800000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

1,524 NPPES records list urology physician (208800000X) as their primary taxonomy with a practice address in California: 3.9 per 100,000 residents against 4.3 nationally (50 states and D.C.). Los Angeles has 226 of them (15%).

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 York1,091
  2. Florida1,020
  3. Texas960
  4. Pennsylvania663

States with a similar rate per 100,000

  1. Hawaii4.0
  2. Iowa4.0
  3. Oklahoma4.0
  4. Delaware3.8

The largest states

  1. New York1,091
  2. Florida1,020
  3. Texas960
  4. Pennsylvania663
  5. Illinois629

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.