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 4 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. Alaa Hegab, MBBCHPalo Alto, CA 943011760890446
  2. Suzanne Henderson, MDRedwood City, CA 940631922452341
  3. Joseph Hernandez, MD, PHDPalo Alto, CA 943041104052232
  4. Lauren Hiyama, M.D.Fresno, CA 937201215025275
  5. Sandra Ho, MDLos Angeles, CA 900661659680411
  6. John Hoehne, MDRichmond, CA 948011942389085
  7. Bryce Hoffman, M.D.Los Gatos, CA 950301801216742
  8. Harold Hoffman, M.D.San Diego, CA 921231326074261
  9. Robert Holzhauer, MDSan Luis Obispo, CA 934011710955976
  10. Raymond Hong, M.D.Dublin, CA 945681881890200
  11. Anthony Horner, M.D.San Diego, CA 921231700957560
  12. Chih-Hsin Hsu, M.D.Oakland, CA 946111629480389
  13. Yu-Luen Hsu, M.D.San Gabriel, CA 917761720054000
  14. Faith Huang, M.D.Mission Viejo, CA 926911326252230
  15. Michelle Huffaker, MDStanford, CA 943051407141641
  16. Jacquelyn HunterMission Viejo, CA 926911629639406
  17. Nhan Huynh, M.D.Los Angeles, CA 900331518903814
  18. Marc Ikeda, M.D.Sacramento, CA 958231083872196
  19. Aqil Imam, MDRancho Mirage, CA 922701730173212
  20. Kamran Imam, MDRiverside, CA 925011013495431
  21. Gary Incaudo, MDChico, CA 959261194742106
  22. Christian Issels, N.D.Carpinteria, CA 930131396913430
  23. Rajashri Iyengar, M.D.San Carlos, CA 940701811004476
  24. Charles Jaffe, MD, PHDDel Mar, CA 920141114259827
  25. James Jaing, MDModesto, CA 953561164500997
  26. Christopher Jakle, MDSacramento, CA 958231598843252
  27. Christine James, M.D.San Diego, CA 921031144589979
  28. Emilio Jauregui, MDLos Angeles, CA 900331205463684
  29. Dennis Jerome, M.D.Los Alamitos, CA 907201720090301
  30. Fonda JiangLong Beach, CA 908081043590649
  31. Shirley Jiang, MDPalo Alto, CA 943051023646247
  32. Eric Jones, MDSan Diego, CA 921201629431259
  33. Ilisten Jones, M.D., M.P.H.Walnut Creek, CA 945981407148943
  34. Thomas Josa, MDRedwood City, CA 940631699853242
  35. Yela Jung, MDOrange, CA 928681780145573
  36. Sandy Jung-Wu, MDFontana, CA 923351235339938
  37. Dariush Kafashzadeh, MDLos Angeles, CA 900951659958361
  38. Anita Kallepalli, M.D.Redwood City, CA 940611811335607
  39. Toral Kamdar, M.D.Walnut Creek, CA 945981073776555
  40. Amarjot Kang, MDLoma Linda, CA 923541124685524
  41. Peter Kao, MDStockton, CA 952101275611188
  42. Barbara Karpel, MDWalnut Creek, CA 945981033111729
  43. Patricia KeefeSan Diego, CA 921201447419502
  44. John Kelso, M.D.San Diego, CA 921301720066970
  45. Alan Khadavi, MDBeverly Hills, CA 902111841220621
  46. Jamie Kiehm, M.D.Los Angeles, CA 900591508152810
  47. Iris Kim, MDLong Beach, CA 908081992264964
  48. Janet Kim, M.D.Mission Viejo, CA 926911235451360
  49. Jungmee Kim, M.D.La Mirada, CA 906381669465225
  50. Kenneth Kim, M.D.Long Beach, CA 908061205833563

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.