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 15 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. Tsang-Hung Chang, M.D.Monterey Park, CA 917541801857859
  2. Zhiyuh Chang, MDClovis, CA 936111134207046
  3. Scott Changchien, M.D.Oxnard, CA 930301902850555
  4. Daniel Channell, MDRancho Cucamonga, CA 917301699749044
  5. Cynthia Chao, DO A PROFESSIONAL COLos Alamitos, CA 907201720077274
  6. Likang Chao, MDBarstow, CA 923111841380490
  7. Stephen Chao, MDFontana, CA 923351083832927
  8. Jocelyn ChapmanSan Francisco, CA 941431770810590
  9. Johara Chapman, MDOakland, CA 946021447260021
  10. Shilpa Chari, MDDaly City, CA 940151013095595
  11. Aiga Charles, MDTempleton, CA 934651801118443
  12. Rene Charles, MDDinuba, CA 936181174541239
  13. Navpreet Chattha, MDNewport Beach, CA 926631831501055
  14. Suzanne Chaudhry, M.D.Lancaster, CA 935341730223066
  15. Taimur Chaudhry, MDSanta Maria, CA 934541043355910
  16. Trisha Chaudhury, DOFountain Valley, CA 927081316688815
  17. Silverio Chavez, MDSan Diego, CA 921201326107939
  18. Estrella Chavez Benzaquen, M.D.Santa Maria, CA 934551396187449
  19. Marta Cheatham-Lott, MDRedlands, CA 923731992706451
  20. Connie Chein, MDBeverly Hills, CA 902121851327431
  21. Albert Chen, M.D.Torrance, CA 905051528079076
  22. Christine Chen, BMBCHDaly City, CA 940151477712743
  23. Cicely Chen, M.D.Sonora, CA 953701043625916
  24. Edward Chen, M.D.Monterey Park, CA 917541164463345
  25. Grace Chen, MDSan Francisco, CA 941151285376269
  26. Hsuan-Chih Chen, MDSanta Cruz, CA 950651114286796
  27. Jennifer Chen, MDBeverly Hills, CA 902101932587201
  28. Kuang-Yu Chen, M.DAlhambra, CA 918011679859318
  29. Li-Ching Chen, MD.Mission Hills, CA 913451578577326
  30. Ling Chen, MDLos Gatos, CA 950321649216888
  31. Margaret Chen, MDSan Francisco, CA 941181578619706
  32. Michellee Chen, M.D.Oakland, CA 946091528141306
  33. Renee Chen, M.D.Los Angeles, CA 900331760804157
  34. Richard Chen, MDRiverside, CA 925051053350652
  35. Stephanie Chen, M.D.Torrance, CA 905021811189152
  36. Steven Chen, MDSanta Clara, CA 950511245319987
  37. Xinyue Chen, DOSanta Maria, CA 934541356920557
  38. Ying Chen, M.D.Escondido, CA 920251801999701
  39. Yu ChenMontebello, CA 906401043661556
  40. Jocelyn Chen-Sandoval, MDLoma Linda, CA 923541447541008
  41. Connie Cheng, MDLos Angeles, CA 900951437504792
  42. Ethelind Cheng, M.D.Baldwin Park, CA 917061245420405
  43. Irene ChengSan Jose, CA 951261912224130
  44. Robert Cheng, M.D.San Gabriel, CA 917751851463178
  45. Hui Min Cheong, MDSacramento, CA 958231285663930
  46. Monica Cheong, MDPleasanton, CA 945881679647994
  47. Ashley Cheongsiatmoy, M.D.Roseville, CA 956611487956918
  48. Rae-Pei Cherng, M.D.San Jose, CA 951281215148291
  49. Michele Cherry, D.O.Placerville, CA 956671588642417
  50. Mon-Lai Cheung, MDBakersfield, CA 933011376602961

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.