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 5 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. Daniel Rychlik, MDSanta Barbara, CA 931051639138258
  2. Jan Rydfors, MDRedwood City, CA 940631508810763
  3. Nidhee Sachdev, MDAliso Viejo, CA 926561710299813
  4. Homayoun SadeghiBeverly Hills, CA 902121225212988
  5. Vicken Sahakian, M.D.Los Angeles, CA 900241356493969
  6. Shala Salem, M.D.Torrance, CA 905051467685826
  7. Kaia Schwartz, MDSan Francisco, CA 941581225590094
  8. Thalia Segal, MDWalnut Creek, CA 945981467751255
  9. Vicken Sepilian, M.D.Los Angeles, CA 900361528199627
  10. Ramya Sethuram, MDLos Altos, CA 940221396123550
  11. Carmelo Sgarlata, MDSan Jose, CA 951281942239603
  12. Wendy Shelly, M.D.San Diego, CA 921231871530147
  13. Wen-Hui Shen, MDFremont, CA 945381487792487
  14. Atul Sheth, MDSunnyvale, CA 940871023041928
  15. Michaela ShouldisSan Mateo, CA 944031659233120
  16. Donna Shoupe, M.D.Los Angeles, CA 900331356437297
  17. Eric Sills, M.D.Carlsbad, CA 920081972566347
  18. Anita Singh-Craighead, M.D.Agoura Hills, CA 913011174585913
  19. Collin Smikle, MDSan Francisco, CA 941091942389184
  20. David Smotrich, MDLa Jolla, CA 920371720144918
  21. Ellen Snowden, M.D.Sacramento, CA 958211659383941
  22. Anna Sokalska, MD, PHDMountain View, CA 940401881954436
  23. Rebecca Sokol, M.D.Los Angeles, CA 900171336286889
  24. Teresa Sparks, M.D. (06/2009)San Francisco, CA 941431932340957
  25. Brett Stark, MDSan Francisco, CA 941581831693779
  26. Jeffrey Steinberg, M.D.Encino, CA 914361760564629
  27. Alex Steinleitner, M.D.San Luis Obispo, CA 934051053461640
  28. Sahar Stephens, MDRoseville, CA 956611194917575
  29. Michael Strug, DOSan Francisco, CA 941331538680905
  30. Brian Su, M.D.Alhambra, CA 918011326100058
  31. Hui-Chun SuSan Diego, CA 921211053466011
  32. Carolina Sueldo, M.D.Clovis, CA 936111366752107
  33. Lauren Sundheimer, MD, MSNewport Beach, CA 926601891089785
  34. Lillian Swiersz, MDPalo Alto, CA 943011528134566
  35. Salli Tazuke, M.D.Palo Alto, CA 943011497843742
  36. Tracey Telles, MDWalnut Creek, CA 945981871671966
  37. Semara Thomas, M.D.Los Angeles, CA 900251578829362
  38. Alisha Tolani, M.D.San Francisco, CA 941581730615014
  39. Tannaz Toloubeydokhti, M.D.La Jolla, CA 920931477846095
  40. David Tourgeman, M.D.Los Angeles, CA 900641952371973
  41. Peter Uzelac, M.D.Greenbrae, CA 949041356345789
  42. Sara Vaughn, M.D.Redwood City, CA 940631982970877
  43. Kajal VermaSan Francisco, CA 941581407315468
  44. Benito Villanueva, MDLa Jolla, CA 920371174561401
  45. Nina Vyas, M.D.Los Angeles, CA 900251972966802
  46. Ange Wang, MDStanford, CA 943051255785804
  47. Louis Weckstein, MDSan Ramon, CA 945831700818036
  48. Lawrence Werlin, MDIrvine, CA 926041104988476
  49. Lynn Westphal, MDLos Altos, CA 940221134269723
  50. Rachel Whynott, M.D.La Jolla, CA 920371992123210

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.