NPPES file of Aug 9, 2026

Obstetrics & Gynecology Physician in California

5,088 NPPES records list obstetrics & gynecology physician with a practice address in California, 13 per 100,000 residents, the 29th 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 99 of 102.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207V00000X · 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, 381

  1. Los Angeles381
  2. San Diego279
  3. San Francisco250
  4. Sacramento198
  5. San Jose129

Obstetrics & Gynecology Physician records in California

  1. Randy Winter, M.D.Modesto, CA 953501477618221
  2. Hannah Wirth, MDLos Angeles, CA 900271972007706
  3. Mark Wiseman, M.D.Visalia, CA 932911639127434
  4. Lauren Witchey, MDLong Beach, CA 908081073074670
  5. Colleen Wittenberg, MDRiverside, CA 925051669549473
  6. Michael Wittenberger, M.D.San Diego, CA 921341639250004
  7. Perri Wittgrove, M.D.San Diego, CA 921031497752836
  8. Cinna Wohlmuth, M.D.Los Angeles, CA 900331124025275
  9. Rebekah Wolak, M.D.Travis Afb, CA 945351154559110
  10. Sara Woldemariam, MDOakland, CA 946111407597180
  11. Jeffrey Wolf, M.D.Rolling Hills Estates, CA 902741740314764
  12. Danny Wolfe, MDSan Jose, CA 951191225114739
  13. Kristy Wolff, M.D.Fortuna, CA 955401972548436
  14. Yvonne Wolny, MDLompoc, CA 934361710919782
  15. Benjamin Wolsztejn, M.D., F.A.C.O.G.Hayward, CA 945421578575445
  16. Sara Won, MDWalnut Creek, CA 945961003134180
  17. Sally Wonderly, MDBakersfield, CA 933011780636092
  18. Alexander Wong, MDWoodland Hills, CA 913671548319924
  19. Ann Wong, MDSunnyvale, CA 940871093815607
  20. Christina Wong, MDFremont, CA 945381528132842
  21. George Wong, MDWoodland, CA 956951013945534
  22. Janice WongLa Jolla, CA 920371902485519
  23. Jessica Wong, MDSan Carlos, CA 940701538348396
  24. Joanna Wong, M.D. M.P.H.Sacramento, CA 958251841723863
  25. John Wong, M.D.Los Angeles, CA 900071265539514
  26. Jonathan Wong, MDSan Francisco, CA 941331780750588
  27. Lina Wong, D.O.Rosemead, CA 917701417112392
  28. Marron Wong, M.D.Fremont, CA 945381871859843
  29. Martin Wong, MDSanta Clara, CA 950511588743223
  30. Michael Wong, MDSan Diego, CA 921171033113600
  31. Rose WongEl Monte, CA 917311093827586
  32. Shirley Wong, DOColton, CA 923241346313459
  33. Vansen Wong, MDRoseville, CA 956611154400893
  34. Cynthia Woo, MDPalo Alto, CA 943011689741811
  35. Irene Woo, M.D.Encino, CA 914361104141217
  36. Jeffrey WooSan Diego, CA 921301588051759
  37. Jesse Woo, M.D.Pomona, CA 917671770710022
  38. Kevin Woo, MDPleasanton, CA 945881669550729
  39. Kirstin Woo, MDLos Altos, CA 940221023144672
  40. Victoria Woo, M.D.San Francisco, CA 941101437415957
  41. Anna WoodLos Angeles, CA 900951639878515
  42. John Wood, MDRedwood City, CA 940631881772473
  43. Ronald Woodard, M.D.Glendale, CA 912081609843259
  44. Jamie Woodley, DOTorrance, CA 905021063896900
  45. Elizabeth Woods, MDFresno, CA 937011063410322
  46. Leilani Woodson, M.D.Long Beach, CA 908061912920836
  47. Catherine Worden, MDRiverside, CA 925051518103779
  48. Lisa Worsch, M.D.Newport Beach, CA 926631851320840
  49. Teresa Wray, MDFontana, CA 923351891854493
  50. Benny Wright, D.O.Los Banos, CA 936351992894539

Source: CMS NPPES, primary taxonomy 207V00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 29 of 51 per resident

  1. Wisconsin13
  2. Ohio13
  3. Washington13
  4. California13
  5. Indiana13
  6. Georgia13
  7. 50 states and D.C.14

Source: CMS NPPES, primary taxonomy 207V00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

73.5% of these records appear in a Medicare file, against 75.6% 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. California73.5%
  2. United States75.6%

Obstetrics & Gynecology Physician records in California, measured

  • In a Medicare file3,740 of 5,088 · 73.5% here, 75.6% nationally
  • In the CMS Doctors and Clinicians file2,703 · 53.1% here, 60.3% nationally
  • Not updated in five years or more3,239 · 63.7% here, 56.2% nationally
  • Median graduation year2004 · the 2,700 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207V00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

5,088 NPPES records list obstetrics & gynecology physician (207V00000X) as their primary taxonomy with a practice address in California: 13 per 100,000 residents against 14 nationally (50 states and D.C.). Los Angeles has 381 of them (7%).

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. Texas3,524
  2. New York3,174
  3. Florida2,601
  4. Illinois2,062

States with a similar rate per 100,000

  1. Indiana13.0
  2. Georgia13.0
  3. Washington13.3
  4. Ohio13.3

The largest states

  1. Texas3,524
  2. New York3,174
  3. Florida2,601
  4. Illinois2,062
  5. Pennsylvania1,974

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.