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 78 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. Cassiopeia RogersMoreno Valley, CA 925551316885791
  2. Francesca Rogers, M.D.Burbank, CA 915051568521912
  3. Nicholas Rogers, MDPalmdale, CA 935511124203583
  4. Patricia Rogers, M.D.Mountain View, CA 940401942395041
  5. Daniella RogersonSan Francisco, CA 941431952051310
  6. Jesse Rohloff, MDSan Diego, CA 921081407827447
  7. David Rojas, M.D.Sacramento, CA 958161205085446
  8. Kristina Roloff, D.O.Colton, CA 923241649418401
  9. Dmitriy Romanenko, M.D.,South Gate, CA 902801881894715
  10. Brianne Romeroso, M.D.Santa Monica, CA 904041982921276
  11. Carsten Ronlov, M.D.Los Alamitos, CA 907201841382876
  12. Joseph Roofeh, MDBeverly Hills, CA 902121033572854
  13. Kathleen Rooney, M.D.Sacramento, CA 958251568758472
  14. Valerie Camille Roque, MDPleasanton, CA 945881952755365
  15. Carlos Rosales, M.D.Long Beach, CA 908061295793859
  16. Anya Rose, MDArcadia, CA 910071952363467
  17. Joseph Rose, MDWalnut Creek, CA 945981245492925
  18. Kelsey RoseLos Angeles, CA 900951538553748
  19. Natalie Rose, MDSacramento, CA 958171023242310
  20. Santelia RoseMarina Del Rey, CA 902921457837023
  21. Therese Rosellini, DOElk Grove, CA 957581780781930
  22. Aaron Rosen, M.D.Manhattan Beach, CA 902661285015313
  23. Mitchell Rosen, M.D.San Francisco, CA 941151730123662
  24. Gordon Rosenberg, MDLos Gatos, CA 950321306806922
  25. Steven Rosenberg, M.D.Torrance, CA 905051396767828
  26. Kenneth Rosenfeld, MDStockton, CA 952101851479752
  27. Amy Rosenman, M.D.Los Angeles, CA 900451376643361
  28. Melissa Rosenstein, MDSan Francisco, CA 941431750520821
  29. Marc Rosenthal, M.D.Torrance, CA 905051659469575
  30. Jordan Rossi, MDMoreno Valley, CA 925551962030106
  31. Patrick Roth, MDAnaheim, CA 928071073661963
  32. Jason Rothbart, MDLos Angeles, CA 900251316944200
  33. Leonard Rothman, M.D.San Francisco, CA 941331275807323
  34. Carrie Rothstein, MDMenlo Park, CA 940251962467597
  35. Tammy Rouleau, N.P.Chula Vista, CA 919131881607646
  36. Kacie RoundsChico, CA 959261366814576
  37. Tami RowenSan Francisco, CA 941151649507906
  38. Rebecca Roy, M.D.Downey, CA 902421154610145
  39. Kenneth Royle, MDFresno, CA 937201891873378
  40. Nicholas Rubashkin, M.D.San Francisco, CA 941101154459998
  41. Robert Rubeshaw, M.D.San Leandro, CA 945771629156484
  42. Richard Rudd, M.D.Berkeley, CA 947051972614972
  43. Jeffrey Ruderman, M.D.Sacramento, CA 958151497757686
  44. James Rudolf, M.D.Loma Linda, CA 923541639103260
  45. Clare Rudolph, MDSouth Lake Tahoe, CA 961501902117732
  46. Rebecca Ruebsamen, DOSanta Maria, CA 934541659861631
  47. G. Thomas Ruiz, MDFountain Valley, CA 927081518967330
  48. Reinaldo Ruiz, MDFontana, CA 923351700953635
  49. Natalie Rumble, M.D.San Diego, CA 921031639350846
  50. Radmila Runic, MDCovina, CA 917231952521544

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.