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 102 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. Stephanie Zamora, DOSanta Maria, CA 934541952862443
  2. Kambiz Zand, M.D.San Jose, CA 951231689814436
  3. Maryam Zand, D.O.Victorville, CA 923951285746370
  4. Lydia Zapanta, MDDelano, CA 932151932341385
  5. Mya Zapata, M.D.Los Angeles, CA 900951093967507
  6. Katerina Zappas-Levy, MDGreenbrae, CA 949041346737012
  7. Sonia Zarate-Navarro, M.D.Daly City, CA 940151033370226
  8. Eve Zaritsky, MDOakland, CA 946111508968231
  9. Bettina Zatuchni, MDPleasanton, CA 945881295825073
  10. Jennifer Zeidberg, M.D.Monterey, CA 939401689695850
  11. Arnold Zeiderman, M.D.Jackson, CA 956421306884788
  12. Bonnie Zell, M.D.Oakland, CA 946121528465192
  13. Hannah Zeltzer, D.O.Davis, CA 956161942735642
  14. Rong Zeng, M.D., PH.D.Daly City, CA 940151568661056
  15. Amani Zewail, M.D.San Francisco, CA 941151033359260
  16. Amy Zhai, M.D.Fontana, CA 923351023451564
  17. Cindy Zhang, M.D.Berkeley, CA 947041255656187
  18. Janet Zhang, MDRiverside, CA 925051528257540
  19. Mallory Zhang, M.D.Fontana, CA 923351912040726
  20. Mark Zhang, M.D.Sacramento, CA 958221881769263
  21. Wenjia Zhang, M.D.San Francisco, CA 941101528452661
  22. Yan Zhao, M.D.Sacramento, CA 958171588976534
  23. Sally ZhenSan Francisco, CA 941091891038667
  24. Joy Zhou, M.D.Burlingame, CA 940101427142330
  25. Tina Ziainia, M.D.San Diego, CA 921311447362496
  26. Alan ZiegSan Diego, CA 921131699790634
  27. Molly Zielenbach, M.D.Sylmar, CA 913421144682337
  28. Ronald Zielinsky, M.D.Carmichael, CA 956081871603928
  29. Daniel Zimmerman, MDAntioch, CA 945091124121223
  30. Joseph Zimmerman, MDRoseville, CA 956611619055399
  31. Eli Zinner, MDSanta Maria, CA 934541174614036
  32. Marya Zlatnik, MDSan Francisco, CA 941431720043417
  33. Guilda Zokaeem, M.D.Beverly Hills, CA 902101053526780
  34. Eghbal Zomorrodi, M.D.San Diego, CA 921231295736965
  35. Iram Zubair, M.D.Fremont, CA 945381386670883
  36. William Zuber, MDDaly City, CA 940151760558241
  37. Steven Zurnacian, MDWalnut Creek, CA 945961710065875
  38. Mark Zyman, M.D.La Mesa, CA 919421285989350

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.