NPPES file of Aug 9, 2026

Clinical Molecular Genetics Physician in California

24 NPPES records list clinical molecular genetics physician with a practice address in California, 0.1 per 100,000 residents, the 7th highest rate of 26. San Jose and Los Angeles have the most; each record links to the provider's NPI and the California license search.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207SG0203X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

San Jose has the most, 4

  1. San Jose4
  2. Los Angeles3
  3. San Carlos3
  4. South San Francisco3
  5. Palo Alto2

Clinical Molecular Genetics Physician records in California

  1. Karla Bowles, PH.D., FACMG, CGMBSouth San Francisco, CA 940801750369955
  2. Perry Chan, PH.D.Calabasas Hills, CA 913011760454581
  3. Helio Costa, PH.D.Palo Alto, CA 943041073054722
  4. Jeana Da Re, PHD, FACMGSan Francisco, CA 941031962231084
  5. Joshua Deignan, PHDLos Angeles, CA 900951568860120
  6. Avinash Dharmadhikari, PHDLos Angeles, CA 900571669326740
  7. Kristin Gibson, PHDSan Francisco, CA 941031669082558
  8. Saurav Guha, PHDSouth San Francisco, CA 940801174031850
  9. Xiao-Dong Han, PH.D.San Jose, CA 951231023190857
  10. Victoria Howell, C.G.CLa Jolla, CA 920371972057362
  11. Bernard Ilagan, MD, MHASan Juan Capistrano, CA 926751063746485
  12. Chia-Ling Kawakami, PH.D., ABMGG, NYCOQ,Aliso Viejo, CA 926561043846728
  13. Jennifer Keen-Kim, PH.DSan Carlos, CA 940701063992386
  14. Julie Korenberg, M.D.Los Angeles, CA 900481831126424
  15. Li Liang, PHDSan Jose, CA 951381629992292
  16. Henry Lin, M.D.Torrance, CA 905021457398760
  17. Elaine Louie, PH.D.San Jose, CA 951231760713176
  18. Yu Leng Phua, PHD, FACMGSan Carlos, CA 940701538035233
  19. Youbao ShaFremont, CA 945381134075716
  20. Elizabeth Spiteri, PHDPalo Alto, CA 943041356837538
  21. Douglas Stewart, MDSouth San Francisco, CA 940801740748573
  22. John Ten Bosch, PHDSan Jose, CA 951231609211390
  23. Jing XieSan Carlos, CA 940701851247506
  24. Ying ZhangOrange, CA 928681700506938

Source: CMS NPPES, primary taxonomy 207SG0203X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 7 of 26 per resident

  1. Colorado0.1
  2. New York0.1
  3. Oregon0.1
  4. California0.1
  5. Indiana0.1
  6. Tennessee0.1
  7. 50 states and D.C.0.0

Source: CMS NPPES, primary taxonomy 207SG0203X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

4.2% of these records appear in a Medicare file, against 17.9% 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. California4.2%
  2. United States17.9%

Clinical Molecular Genetics Physician records in California, measured

  • In a Medicare file1 of 24 · 4.2% here, 17.9% nationally
  • In the CMS Doctors and Clinicians file0 · 0.0% here, 11.2% nationally
  • Not updated in five years or more11 · 45.8% here, 52.2% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207SG0203X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

24 NPPES records list clinical molecular genetics physician (207SG0203X) as their primary taxonomy with a practice address in California: 0.1 per 100,000 residents against 0 nationally (50 states and D.C.). San Jose has 4 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. Massachusetts14
  2. New York14

The largest states

  1. Massachusetts14
  2. New York14
  3. Texas9
  4. Washington9
  5. Florida6

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.