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 2 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. Daniel Cerrone, M.D.Sunnyvale, CA 940851285079426
  2. Sanny Chan, M.D., PH.D.Santa Monica, CA 904041043449788
  3. Wan-Yin Chan, M.D.Orange, CA 928681932391471
  4. Jinny Chang, MDSanta Barbara, CA 931101336266857
  5. Terrance ChangRoseville, CA 956611861561219
  6. Amber Chen, MD, MBASan Francisco, CA 941431871282582
  7. Chongjia Chen, MDIrvine, CA 926181285021618
  8. Eric Chen, MDWalnut Creek, CA 945981558440222
  9. Erica Chen, M.D.Panorama City, CA 914021386089068
  10. James Chen, DOSan Francisco, CA 941211891870119
  11. Paul Cheng, MDSan Leandro, CA 945771073619706
  12. Erika CherkPalo Alto, CA 943011871129882
  13. William Cherry, M.D.Riverside, CA 925061366429730
  14. Patty Chi, MDMountain View, CA 940401407898323
  15. Dean Chiang, M.D.Torrance, CA 905051760484455
  16. Aaron Chin, MDSanta Monica, CA 904041487116638
  17. John Chiu, MDNewport Beach, CA 926601326121716
  18. Soo Hyun Choi, M.D.Irvine, CA 926041851596779
  19. Sun Mi Choi, M.D.Los Angeles, CA 900951306252101
  20. Madeleine Chollet, M.D., PH.D.Dublin, CA 945681518351667
  21. Preeti Chopra, M.D.Oxnard, CA 930361699951202
  22. Joseph Chun, M.D.Fullerton, CA 928331710015425
  23. Kathleen Clanon, MDOakland, CA 946021386654945
  24. Cathleen Collins, M.D.San Diego, CA 921231205128089
  25. David Cook, MDWalnut Creek, CA 945981740282425
  26. Kevin Cook, M.D.San Diego, CA 921301649537432
  27. Stamatiki Coss, MDSacramento, CA 958251669550158
  28. Angelina Crans Yoon, MDWoodland, CA 956951336419290
  29. Nancy Cummings, MDMenlo Park, CA 940251598728917
  30. Vinitha Das, MDRiverside, CA 925181811217300
  31. Raffaele Davidovich, MDAnaheim, CA 928011174528657
  32. Jeffrey Davidson, M.D.San Francisco, CA 941041295792497
  33. Joshua Davidson, M.D., M.P.H.Redondo Beach, CA 902771144343146
  34. Richard Davis, M.D.Modesto, CA 953501942396429
  35. Judy Del Mundo, M.D.San Jose, CA 951281942203013
  36. Cornelia Delicona, MDMission Hills, CA 913451811003718
  37. Dennis Delpaine, MDStockton, CA 952101851452213
  38. Richard Demera, MDFresno, CA 937201407816630
  39. Asha Desai, M.D.Roseville, CA 956611750466298
  40. Shilpa Desai, M.D.South San Francisco, CA 940801235369968
  41. Vincent Devlin, DO, MHSRancho Mirage, CA 922701871910752
  42. Marie Di PasqualePalo Alto, CA 943011700247897
  43. Amar Dixit, M.D.Beaumont, CA 922231316381650
  44. Manjul Dixit, MDAtherton, CA 940271922064963
  45. Lananh Do, MDLos Angeles, CA 900641235247966
  46. Toan DoSan Diego, CA 921211720617582
  47. Mohammad-Ali DoroudchiLa Jolla, CA 920371407316136
  48. Marc Dyer, MDLaguna Niguel, CA 926771144341918
  49. William Ebbeling, M.D.San Diego, CA 921231205808284
  50. Victoria Eng, MDSanta Barbara, CA 931051730573015

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.