NPPES file of Aug 9, 2026

Reproductive Endocrinology Physician in California

267 NPPES records list reproductive endocrinology physician with a practice address in California, 0.7 per 100,000 residents, the 9th highest rate of 48. Los Angeles and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 6 of 6.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207VE0102X · 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, 33

  1. Los Angeles33
  2. San Francisco29
  3. San Diego19
  4. La Jolla12
  5. Newport Beach10

Reproductive Endocrinology Physician records in California

  1. John Wilcox, M.D.Pasadena, CA 911051023088689
  2. Susan Willman, MDOrinda, CA 945381912938572
  3. Bryn Willson, M.D.San Diego, CA 921301275066334
  4. Sharon Winer, M.D., M.P.HBeverly Hills, CA 902101821456229
  5. Nurit Winkler, M.D,Los Angeles, CA 900241104065358
  6. Athur Wisot, M.D.Redondo Beach, CA 902771902812449
  7. Kenneth Wong, M.D.Loma Linda, CA 923541417979626
  8. Tsung Chieh Wu, MDLos Angeles, CA 900951083648687
  9. Mylene Yao, M.D.Stanford, CA 943051912040668
  10. Billy Yee, M.D.Westminster, CA 926831629170162
  11. Frank Yelian, MD, PHDIrvine, CA 926061639119118
  12. Yu-Kang Ying, MDSan Diego, CA 921011003176892
  13. Richard Yoo, MDSan Diego, CA 921201487702460
  14. Bo Yu, MDPalo Alto, CA 943041861651143
  15. Sohila Zarandy, M.D.Corona Del Mar, CA 926251568553477
  16. Ernest Zeringue, MDSacramento, CA 958331851301485
  17. Temeka Zore, M.D.San Francisco, CA 941091447526587

Source: CMS NPPES, primary taxonomy 207VE0102X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 9 of 48 per resident

  1. Vermont0.9
  2. New Jersey0.9
  3. Hawaii0.8
  4. California0.7
  5. Maryland0.6
  6. Pennsylvania0.6
  7. 50 states and D.C.0.5

Source: CMS NPPES, primary taxonomy 207VE0102X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

69.7% of these records appear in a Medicare file, against 70.3% 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. California69.7%
  2. United States70.3%

Reproductive Endocrinology Physician records in California, measured

  • In a Medicare file186 of 267 · 69.7% here, 70.3% nationally
  • In the CMS Doctors and Clinicians file26 · 9.7% here, 14.8% nationally
  • Not updated in five years or more162 · 60.7% here, 57.3% nationally
  • Median graduation year1993 · the 26 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207VE0102X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

267 NPPES records list reproductive endocrinology physician (207VE0102X) as their primary taxonomy with a practice address in California: 0.7 per 100,000 residents against 0.5 nationally (50 states and D.C.). Los Angeles has 33 of them (12%).

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 York206
  2. Texas150
  3. Florida93
  4. Pennsylvania83

States with a similar rate per 100,000

  1. Maryland0.6
  2. Illinois0.6
  3. Colorado0.6
  4. Utah0.6

The largest states

  1. New York206
  2. Texas150
  3. Florida93
  4. Pennsylvania83
  5. Illinois79

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.