Where allergists and immunologists are listed

Top 15 states by individual clinicians whose primary specialty is allergy and immunology. Based on 5,778 individual clinician (NPI-1) records with a primary allergy and immunology taxonomy in the federal NPI Registry.

Source: NPPES NPI Registry (CMS). Counts by practice location state.

Item	Count
California	715
New York	498
Texas	470
Florida	313
Pennsylvania	264
Illinois	244
Massachusetts	201
New Jersey	197
Michigan	195
Virginia	190
Maryland	186
Ohio	184
North Carolina	169
Georgia	147
Colorado	137

Use this chart with credit to Immunologists.com. See the full chart library or the directory.

Sources

NPPES NPI Registry (Centers for Medicare and Medicaid Services)
Counts come from a November 2026 pull of the NPPES NPI Registry API, filtered to records whose primary taxonomy is allergy and immunology. Individual clinicians are NPI-1 records and organizations are NPI-2 records. Counts by practice location state.

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