NPPES file of Aug 9, 2026

Allergy & Immunology Physician in California

444 NPPES records list allergy & immunology physician with a practice address in California, 1.1 per 100,000 residents, the 21st highest rate of 51. San Diego and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 3 of 9.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207K00000X · method

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

San Diego has the most, 48

  1. San Diego48
  2. Los Angeles34
  3. San Francisco15
  4. Walnut Creek14
  5. Palo Alto13

Allergy & Immunology Physician records in California

  1. Roger Espiritu, M.D.San Francisco, CA 941431336235365
  2. Sahar Faghih, D.O.Fullerton, CA 928331194914226
  3. David Fan, MDWalnut Creek, CA 945981619596152
  4. Kevin Farnam, M.D.Pasadena, CA 911011598092330
  5. Farinaz Farrahi, MDSan Leandro, CA 945781174661227
  6. Katharine Fast, M.D.San Francisco, CA 941081275720484
  7. C. Garrison Fathman, MDStanford, CA 943051770619926
  8. Bernard Feigenbaum, M.D.Brentwood, CA 945131639115652
  9. Charles Feng, MDMountain View, CA 940401518260306
  10. Lindsay Finkas, M.D.San Rafael, CA 949031619278322
  11. Robert Freinkel, M.D.Vallejo, CA 945891245207489
  12. Catherine Fuller, M.D.Los Angeles, CA 900251851349120
  13. Stanley Galant, MDOrange, CA 928681780799809
  14. Renu Gandhe, MDSunnyvale, CA 940851609138874
  15. Akaansha Ganju, MDLos Angeles, CA 900241881198885
  16. Gordon Garcia, MDSacramento, CA 958231487732129
  17. Meghan Garcia, M.D.Sacramento, CA 958191891131447
  18. Ronald Gehling, M.D.Laguna Niguel, CA 926771710007463
  19. Bernard Geller, M.D., PH.D.Santa Monica, CA 904041427132968
  20. Karna Gendo, M.D.Walnut Creek, CA 945981720164536
  21. Bob Geng, M.D.San Diego, CA 921231356570758
  22. Yael Gernez-Goldhammer, M.D., PHDPalo Alto, CA 943041659792125
  23. Yasamin Ghiasi, MDBeverly Hills, CA 902111316409584
  24. Avraham Giannini, MDSan Francisco, CA 941091639192719
  25. Mary Gianos, MDCamarillo, CA 930101386638971
  26. Gary Gibbon, M.D.Santa Monica, CA 904041568484293
  27. Katherine Gilbert, M.D.Berkeley, CA 947051871814467
  28. Donald Gjesdal, M.D.Yorba Linda, CA 928861447254339
  29. Mudita Gogna, M.D.Roseville, CA 956611235391640
  30. Margaret J. Goldenhersh, M.D.Pacific Palisades, CA 902721669633640
  31. Alan Goldsobel, MDSan Jose, CA 951171063528321
  32. Alan Gorenberg, MDOrange, CA 928691730115221
  33. Linda Gorin, M.D.Santa Barbara, CA 931101952490187
  34. Vinay Goswamy, MDSacramento, CA 958171356792022
  35. Vinay Gowda, MDSanta Cruz, CA 950621639180300
  36. Alexander Greiner, M.D.San Diego, CA 921231609801299
  37. Stephen Grifka, M.D.Torrance, CA 905051902089006
  38. Mark Grijnsztein, M.D.Elk Grove, CA 957581164580866
  39. Mariam Guenther, MDSanta Barbara, CA 931051932527983
  40. Ankmalika Gupta, MDIrvine, CA 926971790946440
  41. Bhushan Gupta, M.D.San Mateo, CA 944011326010091
  42. Opal Gupta, MDSan Francisco, CA 941081760724371
  43. Sameer Gupta, M.D.Vista, CA 920831720287436
  44. Sudhir Gupta, MDIrvine, CA 926971811077969
  45. Albert Haas, MDSanta Rosa, CA 954031447334511
  46. Elson Haas, M.D.San Rafael, CA 949031740318112
  47. Jean Hanley, M.D.Glendale, CA 912021073835617
  48. Richard Harris, MDLos Angeles, CA 900351104904051
  49. William Harris, MDOrange, CA 928681922065788
  50. Stella Hartono, MD PHDStanford, CA 943051588195457

Source: CMS NPPES, primary taxonomy 207K00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 21 of 51 per resident

  1. Hawaii1.2
  2. Arizona1.2
  3. Washington1.2
  4. California1.1
  5. Ohio1.1
  6. Rhode Island1.1
  7. 50 states and D.C.1.2

Source: CMS NPPES, primary taxonomy 207K00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

79.1% of these records appear in a Medicare file, against 80.0% 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. California79.1%
  2. United States80.0%

Allergy & Immunology Physician records in California, measured

  • In a Medicare file351 of 444 · 79.1% here, 80.0% nationally
  • In the CMS Doctors and Clinicians file281 · 63.3% here, 65.7% nationally
  • Not updated in five years or more276 · 62.2% here, 57.3% nationally
  • Median graduation year2004 · the 281 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207K00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

444 NPPES records list allergy & immunology physician (207K00000X) as their primary taxonomy with a practice address in California: 1.1 per 100,000 residents against 1.2 nationally (50 states and D.C.). San Diego has 48 of them (11%).

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. Texas327
  2. New York311
  3. Florida204
  4. Pennsylvania183

States with a similar rate per 100,000

  1. Washington1.2
  2. Ohio1.1
  3. Rhode Island1.1
  4. Arizona1.2

The largest states

  1. Texas327
  2. New York311
  3. Florida204
  4. Pennsylvania183
  5. Illinois162

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.