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 17 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. Linda Chung, M.D.Laguna Hills, CA 926531053314211
  2. Namki Chung, M.D.Huntington Park, CA 902551629188024
  3. Thomas Ciaccio, MDBellflower, CA 907061548318454
  4. Marcia Ciccone, MDGlendale, CA 912081154672152
  5. Katharine CiesielskiLos Angeles, CA 900481093211633
  6. Rodrigo Cifuentes, MDCudahy, CA 902011417174988
  7. Mary Ciotti, M.D.Santa Barbara, CA 931101912980665
  8. Ashley Cirillo, DOSan Diego, CA 921231548780182
  9. Branislav Cizmar, MDEscondido, CA 920251679554372
  10. Kiran ClairOrange, CA 928681629481908
  11. Jennifer Claman, MDBellflower, CA 907061881742864
  12. Elizabeth Clark, M.D.Monterey, CA 939401760747968
  13. Grace Clark, MDSan Clemente, CA 926731821738923
  14. Julie Clark, MDPetaluma, CA 949541346216389
  15. Kathryn ClarkSan Francisco, CA 941181154349769
  16. Lenorre Clarke, M.D.Los Angeles, CA 900331962940148
  17. Chunjai Clarkson, M.D.Vista, CA 920831487646857
  18. Hang Claus, M.D.Vacaville, CA 956881144594334
  19. Kaytha Clawson, MDSan Carlos, CA 940701235260910
  20. Reuben Clay, MDSan Francisco, CA 941151477541092
  21. Russell Clayton, MDPanorama City, CA 914021598832438
  22. William Clayton, MDNewport Beach, CA 926631366525586
  23. Monika Cluney, DOFontana, CA 923351982062923
  24. Barbara Clutter, M.D.San Luis Obispo, CA 934051720004237
  25. Mary Co-Asino, MDFremont, CA 945381457436123
  26. Katherine Coakley, M.D.San Diego, CA 921031427438605
  27. Damon Cobb, D.O.San Diego, CA 921231851435598
  28. Peter Coffin, MDVallejo, CA 945891750469599
  29. Mickey Coffler, MDSan Diego, CA 921031205870482
  30. Michael Cogan, MDLong Beach, CA 908131609889815
  31. Deborah Cohan, MDSan Francisco, CA 941101831143221
  32. Craig Cohen, MDSan Francisco, CA 941101306889613
  33. Edward Cohen, MDPalo Alto, CA 943041003838541
  34. Erik Cohen, M.D.Morgan Hill, CA 950371992800783
  35. Isabelle Cohen, M.D.Oakland, CA 946091336409549
  36. Joel Cohen, MDBakersfield, CA 933011992876924
  37. Hayley CokerSacramento, CA 958251497004881
  38. Robert Cole, MDWalnut Creek, CA 945981538247713
  39. Terry Cole, M.D.Ventura, CA 930031992748651
  40. Christie Coleman, M.D.Palo Alto, CA 943011306900964
  41. Caroline Colin, M.D.Santa Monica, CA 904041164608659
  42. Shawni Coll, D.O.Truckee, CA 961611821085416
  43. John Collier, MDWest Hills, CA 913071497714885
  44. Danielle Collins, M.D.Sacramento, CA 958231295094910
  45. Kimberly Collins, M.D.Elk Grove, CA 957581588027346
  46. Iris Colon, MDSan Jose, CA 951281598734998
  47. Eric Colton, MDSan Luis Obispo, CA 934051790723492
  48. Christa Colvin, M.D.Manhattan Beach, CA 902661689097321
  49. Carl Conley, MDLos Angeles, CA 900021265480354
  50. Diane Connelly, M.D.Riverside, CA 925051013967892

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.