NPPES file of Aug 9, 2026

Gynecology Physician in California

369 NPPES records list gynecology physician with a practice address in California, 0.9 per 100,000 residents, the 26th 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 7 of 8.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207VG0400X · 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, 36

  1. Los Angeles36
  2. San Diego13
  3. Santa Monica12
  4. Beverly Hills11
  5. Fresno11

Gynecology Physician records in California

  1. Olga Rotermund, NURSEWalnut Creek, CA 945981164179586
  2. Subir Roy, MDLos Angeles, CA 900331083622294
  3. Lidia Rubinstein, M.D.Los Angeles, CA 900491598914681
  4. Lynn Rudman, MDSanta Barbara, CA 931051710971353
  5. Jennefer Russo, M.D.Orange, CA 928661023033081
  6. Morton Sacks, M.D.Santa Barbara, CA 931091518122514
  7. Naghmeh Salamat-Saberi, MDOrange, CA 928681558441709
  8. Mark Schwabe, M.D.Chico, CA 959261437200227
  9. Cornelius Scott, M.D.Pasadena, CA 911051740592674
  10. Arthur Segal, MDSan Luis Obispo, CA 934051790787174
  11. Robert Semo, MDSan Diego, CA 921611326030669
  12. John Seradj, MDEncinitas, CA 920241023180650
  13. Gerald Shefren, M.D.Stanford, CA 943051992856520
  14. Geraldine Shirzai, MDWalnut Creek, CA 945961609404284
  15. Lillian Shumate, M.D.Modesto, CA 953501548359169
  16. Naeem Siddiqi, M.D.Madera, CA 936371134190374
  17. Matthew Siedhoff, MDBeverly Hills, CA 902101710182779
  18. Virginia Siegfried, M.D.Santa Barbara, CA 931011548215932
  19. Jerome Sinsky, M.D.Escondido, CA 920251205862000
  20. Diane Sklar, MDSan Franciscto, CA 941431538247184
  21. Susan Sklar, M.D.Long Beach, CA 908031851334585
  22. Joann Smith, MDLos Angeles, CA 900951174747893
  23. Gioi Smith-Nguyen, MDSan Diego, CA 921081619198140
  24. Edward Stanford, MDManteca, CA 953361326094715
  25. Andrea Stein, MDSanta Monica, CA 904041053483065
  26. Hector Streeter, MDGreenbrae, CA 949041124190202
  27. Mallory Stuparich, M.D.Los Alamitos, CA 907201609166974
  28. Mary Christine Suarez, M.D.San Jose, CA 951241144268202
  29. Bo Young Suh, MDFullerton, CA 928351942351978
  30. Heidi Sungurlu, D.O.San Luis Obispo, CA 934011114142999
  31. Krishna Surapaneni, MDAnaheim, CA 928051295030096
  32. Michael Tahery, M.D.Los Angeles, CA 900251346249539
  33. Thomas Tam, M.D.Monterey Park, CA 917541770638033
  34. Stephanie Taylor, MDCarmel, CA 939231154306074
  35. Claire Templeman, M.D.Los Angeles, CA 900331063416493
  36. Ann Tommey, M.D.San Luis Obispo, CA 934011760534820
  37. Rosimar Torres, MD, FACOGNewbury Park, CA 913201548270705
  38. Nancy Towbin, MDYorba Linda, CA 928861235233222
  39. Elizabeth Tracy, MDHuntington Beach, CA 926481174588529
  40. Linh Tran, M.D.Stanford, CA 943051518194836
  41. Dafna Trites, D.O.Northridge, CA 913251699734319
  42. Debra Turull, DOTempleton, CA 934651467403519
  43. Nichole Tyson, MDPalo Alto, CA 943041285712976
  44. Jane Udkoff, M.D.Westlake Village, CA 913621205075843
  45. Arthur UleneLos Angeles, CA 900481881090710
  46. Ronald Unzelman, M.D.Santa Rosa, CA 954051437109022
  47. Indra Uppal, MDSusanville, CA 961301730253469
  48. Nandini Verma, MDSanta Monica, CA 904041457369340
  49. Maureen Vieira, N.P.Modesto, CA 953501003022120
  50. Amy Voedisch, MDStanford, CA 943051487708871

Source: CMS NPPES, primary taxonomy 207VG0400X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 26 of 51 per resident

  1. Rhode Island1.0
  2. Alaska1.0
  3. South Carolina0.9
  4. California0.9
  5. Louisiana0.9
  6. Vermont0.9
  7. 50 states and D.C.1.1

Source: CMS NPPES, primary taxonomy 207VG0400X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

59.9% of these records appear in a Medicare file, against 57.2% 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. California59.9%
  2. United States57.2%

Gynecology Physician records in California, measured

  • In a Medicare file221 of 369 · 59.9% here, 57.2% nationally
  • In the CMS Doctors and Clinicians file141 · 38.2% here, 35.7% nationally
  • Not updated in five years or more259 · 70.2% here, 68.7% nationally
  • Median graduation year1995 · the 141 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207VG0400X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

369 NPPES records list gynecology physician (207VG0400X) as their primary taxonomy with a practice address in California: 0.9 per 100,000 residents against 1.1 nationally (50 states and D.C.). Los Angeles has 36 of them (10%).

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. New York362
  2. Florida412
  3. Texas229
  4. Georgia175

States with a similar rate per 100,000

  1. South Carolina0.9
  2. Louisiana0.9
  3. Hawaii0.9
  4. Illinois0.9

The largest states

  1. Florida412
  2. New York362
  3. Texas229
  4. Georgia175
  5. Pennsylvania169

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.