NPPES file of Aug 9, 2026

Allergy & Immunology Physician in Illinois

162 NPPES records list allergy & immunology physician with a practice address in Illinois, 1.3 per 100,000 residents, the 14th highest rate of 51. Chicago and Glenview have the most; each record links to the provider's NPI and the Illinois license search. Page 4 of 4.

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).

Chicago has the most, 47

  1. Chicago47
  2. Glenview9
  3. Peoria5
  4. Hinsdale4
  5. Rockford4

Allergy & Immunology Physician records in Illinois

  1. Dolly Thomas, MDChicago, IL 606341255359857
  2. Mary Tobin, M.D.Chicago, IL 606121528083193
  3. Sean Tully, DOUrbana, IL 618021275093981
  4. Thomas Vanosdol, MDPlainfield, IL 605851275514366
  5. Wyatt Verplaetse, MDPeoria, IL 616061629508965
  6. Arnaud Wautlet, MDChicago, IL 606111184116386
  7. Patrick Win, M.D.Shiloh, IL 622691346335783
  8. Daniel Yamshon, DOSkokie, IL 600771558448589
  9. Maria Yango Eugenio, MDBuffalo Grove, IL 600891881766947
  10. Shira YellinChicago, IL 606111851041545
  11. Byung Yu, MDChicago, IL 606121518925650
  12. John Zech, MDChampaign, IL 618211639277346

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

Illinois ranks 14 of 51 per resident

  1. Pennsylvania1.4
  2. Michigan1.4
  3. North Carolina1.3
  4. Illinois1.3
  5. Louisiana1.3
  6. Kansas1.3
  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.

85.8% 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. Illinois85.8%
  2. United States80.0%

Allergy & Immunology Physician records in Illinois, measured

  • In a Medicare file139 of 162 · 85.8% here, 80.0% nationally
  • In the CMS Doctors and Clinicians file114 · 70.4% here, 65.7% nationally
  • Not updated in five years or more98 · 60.5% here, 57.3% nationally
  • Median graduation year2001 · the 114 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

162 NPPES records list allergy & immunology physician (207K00000X) as their primary taxonomy with a practice address in Illinois: 1.3 per 100,000 residents against 1.2 nationally (50 states and D.C.). Chicago has 47 of them (29%).

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. North Carolina146
  2. Pennsylvania183
  3. Michigan137
  4. Virginia136

States with a similar rate per 100,000

  1. Louisiana1.3
  2. Kansas1.3
  3. Tennessee1.2
  4. Hawaii1.2

The largest states

  1. California444
  2. Texas327
  3. New York311
  4. Florida204
  5. Pennsylvania183

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.