NUCC taxonomy code
207K00000X - Allergy & Immunology Physician
207K00000X is the NUCC provider taxonomy code for Allergy & Immunology Physician (individual providers). 5,519 providers in our latest NPPES snapshot list it as their primary taxonomy.
Code breakdown
Definition
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
Definition from the NUCC Health Care Provider Taxonomy code set.
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Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-13.