NPPES file of Aug 9, 2026

Genetic Counselor (M.S.) in California

942 NPPES records list genetic counselor (m.s.) with a practice address in California, 2.4 per 100,000 residents, the 16th highest rate of 51. Los Angeles and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 18 of 19.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 170300000X · 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, 161

  1. Los Angeles161
  2. San Francisco126
  3. Sacramento55
  4. Palo Alto47
  5. Oakland41

Genetic Counselor (M.S.) records in California

  1. Tamara Treisman, M.S.Fresno, CA 937101821077397
  2. Vivien Triano, MS, CGCSacramento, CA 958171386057453
  3. Amber Trivedi, MS, CGCOceanside, CA 920571811166416
  4. Nicole Truitt, M.S., C.G.CSan Carlos, CA 940701255666905
  5. Hsiao TsaiSan Diego, CA 921231235865502
  6. Marian Joy TsangSan Jose, CA 951361548883648
  7. Marilyn Tsang, MSFresno, CA 937101376653584
  8. Brianna Tucker, MS, CGCLos Angeles, CA 900641437973211
  9. Lamrot Tulu, MSSacramento, CA 958171356126734
  10. Emily Umscheid, MS, LCGCConcord, CA 945201376038901
  11. Sarah Upp, MSLos Angeles, CA 900661609754993
  12. Dillon Van Den Berg, MS, LCGCMission Viejo, CA 926911831680651
  13. Michael Vanandel, MSSan Mateo, CA 944011508593070
  14. Amy Vance, MS, CGCSan Anselmo, CA 949601659342517
  15. Alexander Vanriper, M.S.Sacramento, CA 958151710962667
  16. Sameer Varmani, CGCSan Diego, CA 921231770298507
  17. Fotini Vavelidis, MS,CGCSan Carlos, CA 940701184749160
  18. Catherine Vendola, M.S.San Jose, CA 951231417147943
  19. Anna Victorine, MS, CGCDowney, CA 902421447627880
  20. Karen Vikstrom, MS, CGCVacaville, CA 956871306189782
  21. Anna Villa, M.S.South San Francisco, CA 940801669811022
  22. Aino Vimb, M.SSunland, CA 910401972632537
  23. Pamela Vitar, M.S. LCGCLos Angeles, CA 900251295186641
  24. Marianne Vivien, LCGCMountain View, CA 940401396264115
  25. Katherine Vlessis, MSSan Francisco, CA 941151366003253
  26. Rebecca Waggoner, LCGCLos Angeles, CA 900331336861830
  27. Karin WagnerModesto, CA 953561447606058
  28. Naomi Wagner, MSSan Diego, CA 921031548747199
  29. Victoria Wagner, CGCBurlingame, CA 940101932058047
  30. Adrienne Wakeling, M.S.San Francisco, CA 941431508220807
  31. Donna Walgenbach, M.S.Sacramento, CA 958171528044286
  32. Ann Walker, M.A., CGCOrange, CA 928681548262827
  33. Lindsey Walker, MS, LCGCLos Angeles, CA 900271124770052
  34. Jody Wallace, MS, CGCSan Carlos, CA 940701912208620
  35. Hannah Wand, SCMStanford, CA 943051851888762
  36. Melissa Wang, MS, LCGCSan Jose, CA 951191649947698
  37. Rachel Wang, CGCLos Angeles, CA 900481609660802
  38. Lopa Wani, M.S.Los Angeles, CA 900661174653646
  39. Jenna WardropSan Diego, CA 921211235551441
  40. Lindsay Warner, M.S.Los Angeles, CA 900481316100647
  41. Lakshmi Warrier, M.S., CGCSan Ramon, CA 945821578596532
  42. Elise Wasson, B.S.Los Angeles, CA 900341922487701
  43. Sonya Watson, MSLos Angeles, CA 900951285361709
  44. Karen Wcislo, M.S., CGCSan Jose, CA 951231821087495
  45. Stefanie Weber, MS, LCGCSouth San Francisco, CA 940801306263165
  46. Nicole Weise, MS, LGCEncino, CA 914361710729157
  47. Kara Weisiger, MSSan Francisco, CA 941431952658155
  48. Kimberly Wendt, M.S., C.G.C.Los Angeles, CA 900391326027285
  49. Laura Westbrook, M.S.Sacramento, CA 958171043649536
  50. Anne Marie Westreich, CGCLos Angeles, CA 900481255003018

Source: CMS NPPES, primary taxonomy 170300000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 16 of 51 per resident

  1. Maryland2.6
  2. Colorado2.6
  3. Connecticut2.6
  4. California2.4
  5. Nebraska2.2
  6. Illinois2.2
  7. 50 states and D.C.2.0

Source: CMS NPPES, primary taxonomy 170300000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

0.0% of these records appear in a Medicare file, against under 0.1% 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. California0.0%
  2. United States0.0%

Genetic Counselor (M.S.) records in California, measured

  • In a Medicare file0 of 942 · 0.0% here, under 0.1% nationally
  • In the CMS Doctors and Clinicians file3 · 0.3% here, 0.5% nationally
  • Not updated in five years or more579 · 61.5% here, 52.2% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 170300000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

942 NPPES records list genetic counselor (m.s.) (170300000X) as their primary taxonomy with a practice address in California: 2.4 per 100,000 residents against 2 nationally (50 states and D.C.). Los Angeles has 161 of them (17%).

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. Pennsylvania432
  2. New York398
  3. Texas344
  4. Ohio340

States with a similar rate per 100,000

  1. Connecticut2.6
  2. Colorado2.6
  3. Nebraska2.2
  4. Maryland2.6

The largest states

  1. Pennsylvania432
  2. New York398
  3. Texas344
  4. Ohio340
  5. Massachusetts277

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.