NPPES file of Aug 9, 2026

Specialist in California

5,749 NPPES records list specialist with a practice address in California, 15 per 100,000 residents, the 19th highest rate of 51. San Francisco and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 38 of 115.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 174400000X · method

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

San Francisco has the most, 666

  1. San Francisco666
  2. Los Angeles301
  3. Sacramento241
  4. San Diego207
  5. Oakland198

Specialist records in California

  1. Stuart Green, M.D.Los Alamitos, CA 907201881702504
  2. Daniel Greenberg, M.D.Oxnard, CA 930301619993771
  3. Joseph Greenberg, MDSan Rafael, CA 949031912085937
  4. Robert Greenburg, M.D.La Crescenta, CA 912141811909641
  5. Jennifer Greene, B.S.Sherman Oaks, CA 914011518091073
  6. Gary Greenwald, M.DPalm Desert, CA 922601093797151
  7. Maria Greenwald, M.D.Palm Desert, CA 922601003899758
  8. Scott Greer, M.D.San Diego, CA 921191811993561
  9. Jeffrey Gregg, M.D.Sacramento, CA 958171689657918
  10. Lauryn GregorioSan Leandro, CA 945781710485768
  11. Frederick Gregorius, MDStockton, CA 952041013936608
  12. Katherine Gregory, M.D.San Francisco, CA 941181902954308
  13. Michelle Greiner, OTR/LNorth Hollywood, CA 916061033441639
  14. Ranu Grewal Bahl, MDHayward, CA 945451063425635
  15. William Griffin, M.D.Jackson, CA 956421417095183
  16. John Griffiss, M.D.San Francisco, CA 941211205946357
  17. Bianca GriffithEmeryville, CA 946081548074263
  18. Lyle Griffith, M.D.Hanford, CA 932301528268372
  19. Vrej GrigorianThousand Oaks, CA 913601972708840
  20. Leandro Grimaldi, MD, MPH, EMBAThousand Oaks, CA 913201063364347
  21. Amanda GrimesSan Diego, CA 921081497614291
  22. John Grimes, MFTSan Francisco, CA 941031457541930
  23. Jennifer Grinsdale, MPHSan Francisco, CA 941101073955563
  24. Steven Grinsted, PTLos Angeles, CA 900121497765986
  25. Virginia Griswold, M.D.San Francisco, CA 941211396778304
  26. Elissa Gropen, M.D.Riverside, CA 925041700949112
  27. Elliot Gross, M.D.Culver City, CA 902321639153786
  28. Hyman Gross, M.D.Santa Monica, CA 904041356383350
  29. Julie Gross, LEOakland, CA 946111598317554
  30. Marco Grossi, PT, DPTOceanside, CA 920561174118228
  31. Marc Grossman, M.D.Brea, CA 928211033216577
  32. Viktor GruberSan Francisco, CA 941021790108256
  33. Kollin GrunbergSacramento, CA 958171699648048
  34. John Guatelli, M.D.La Jolla, CA 920931245345693
  35. Jack Guccione, M.D., MPHFortuna, CA 955401174529010
  36. Michael Guerena, MDOceanside, CA 920561841222171
  37. Augusto GuerraSan Francisco, CA 941101033553870
  38. Nathalie Guevara AlvarezSan Francisco, CA 941101013696103
  39. Monica GuillenUnion City, CA 945871932921244
  40. Eliza Guillinta, R.P.TNewhall, CA 913071659493203
  41. Vick GuinardModesto, CA 953541255183513
  42. Dalisay GuinassoSan Francisco, CA 941121174968242
  43. Hany Guirgis, M.D.Palm Desert, CA 922111487044665
  44. Niloufar Guiv, M.D.West Hills, CA 913071124028345
  45. Porscha GulleyOakland, CA 946121245671510
  46. David Gullion, M.D.Greenbrae, CA 949041639270986
  47. Dwayne GulloneSan Francisco, CA 941211730625732
  48. Rochelle GumbsOakland, CA 946121003121138
  49. Nancy Gunzberg, LCSWSanta Barbara, CA 931091396038899
  50. Abha Gupta, M.D.Santa Ana, CA 927051336140458

Source: CMS NPPES, primary taxonomy 174400000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 19 of 51 per resident

  1. Massachusetts16
  2. West Virginia15
  3. Maryland15
  4. California15
  5. Minnesota15
  6. Delaware13
  7. 50 states and D.C.18

Source: CMS NPPES, primary taxonomy 174400000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

29.6% of these records appear in a Medicare file, against 17.0% 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. California29.6%
  2. United States17.0%

Specialist records in California, measured

  • In a Medicare file1,704 of 5,749 · 29.6% here, 17.0% nationally
  • In the CMS Doctors and Clinicians file1,076 · 18.7% here, 11.1% nationally
  • Not updated in five years or more4,403 · 76.6% here, 77.3% nationally
  • Median graduation year1989 · the 1,075 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 174400000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

5,749 NPPES records list specialist (174400000X) as their primary taxonomy with a practice address in California: 15 per 100,000 residents against 18 nationally (50 states and D.C.). San Francisco has 666 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. Florida2,685
  2. Washington2,609
  3. Pennsylvania2,031
  4. Texas1,716

States with a similar rate per 100,000

  1. Minnesota14.6
  2. Maryland15.2
  3. West Virginia15.4
  4. Massachusetts15.7

The largest states

  1. New York22,636
  2. Florida2,685
  3. Washington2,609
  4. Pennsylvania2,031
  5. Texas1,716

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.