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 8 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. Linda Schultz, MDWalnut Creek, CA 945981497833594
  2. Nathan Schultz, M.D.Walnut Creek, CA 945981023010030
  3. Christina Schwindt, M.D.Mision Viejo, CA 926911366522518
  4. Lyne Scott, M.D.Tarzana, CA 913561427193457
  5. Pearl Scott, MDSunnyvale, CA 940851174695910
  6. Maria Serwonska, MDSouth San Francisco, CA 940801376621995
  7. Arif Seyal, MDRancho Cordova, CA 956701215951199
  8. Nisha Shah, M.D.Lancaster, CA 935341437300407
  9. Purvee Shah, MDRiverside, CA 925051629105929
  10. Heena Shah-Patel, M.D.Upland, CA 917861881916864
  11. Joseph Shapiro, MDStudio City, CA 916071528070737
  12. Kusum Sharma, M.D.San Diego, CA 921311144373655
  13. Javed Sheikh, M.D.Los Angeles, CA 900271790722320
  14. Lee Sheinkopf, MDLos Angeles, CA 900641811085871
  15. Ha Shin, MDSan Diego, CA 921211497216360
  16. Rabinder Sidhu, M.D.Fresno, CA 937201013095991
  17. Ronald Simon, M.D.San Diego, CA 921301255304622
  18. Sayantani Sindher, MDPalo Alto, CA 943041366739740
  19. Allan Singer, M.D.Torrance, CA 905051417951070
  20. Glenn Singer, M.D.Bakersfield, CA 933091801275821
  21. Priti Singh, MDSanta Clara, CA 950511801973730
  22. Sudeep Singh, MDFresno, CA 937201225130008
  23. Marjorie Slankard, M.D.San Diego, CA 921231306938337
  24. Tukisa Smith, MDSan Diego, CA 921031205194198
  25. Calvin So, MDSan Francisco, CA 941151629156229
  26. William Sokol, MDNewport Beach, CA 926601497756522
  27. Shaan Somani, MDSan Diego, CA 921301255858395
  28. Hae Young Song, MDYorba Linda, CA 928861831181569
  29. Daniel Steigelman, MDWest Covina, CA 917901982816963
  30. Donald Stevenson, M.D.La Jolla, CA 920371255398566
  31. Alanna Stinson, MDSunnyvale, CA 940851922538826
  32. Brian Stone, M. D.San Diego, CA 921081013907286
  33. Fannie Su, MDWalnut Creek, CA 945981982738712
  34. Samantha Swain, M.D.Santa Monica, CA 904041871938951
  35. Alan Szeftel, M.D.Santa Monica, CA 904041962435412
  36. Raffi Tachdjian, M.D.Santa Monica, CA 904041447376454
  37. Kathleen Tajiri, MDNapa, CA 945581689624983
  38. Marc Tamaroff, MDLong Beach, CA 908081831167857
  39. Jacqueline Tan, PA-CSan Jose, CA 951281811619349
  40. Jessica Tan, MDSan Mateo, CA 944031578713707
  41. Monica TangSan Francisco, CA 941431396011409
  42. Tonny Tanus, MDBakersfield, CA 933011740351873
  43. Allyson Tevrizian, MDWalnut Creek, CA 945981902930753
  44. Myra Thompson-Bull, L.AC.Alpine, CA 919011851611479
  45. Jyothi Tirumalasetty, MDStanford, CA 943051942257605
  46. Robert Torrano, MDSan Jose, CA 951171306854708
  47. Louanne Tourangeau, M.D.Menlo Park, CA 940251558483685
  48. Paulina Tran, DOLos Angeles, CA 900891861854069
  49. Anand Trivedi, M.D.Norwalk, CA 906501437599495
  50. Eugene Tsai, MDArtesia, CA 907011053301200

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.