207K00000X — Allergy & Immunology Physician

207K00000X is the NUCC provider taxonomy code for Allergy & Immunology Physician (individual providers). 5,503 providers in our latest NPPES snapshot list it as their primary taxonomy.

Taxonomy code 207K00000X
Display name Allergy & Immunology Physician
Grouping Allopathic & Osteopathic Physicians
Classification Allergy & Immunology
Section Individual
Directory Allergy & Immunology provider directory

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.

Related taxonomy codes

Frequently asked questions

What does taxonomy code 207K00000X mean?
207K00000X is the NUCC Health Care Provider Taxonomy code for Allergy & Immunology Physician in the "Allopathic & Osteopathic Physicians" grouping. It classifies individual providers.
Where is the taxonomy code used?
Providers select a taxonomy code when applying for an NPI, and it appears on insurance claims (CMS-1500 box 33b / 837 electronic claims) to identify the provider's classification. Payers may require the taxonomy that matches your credential and license.
How do I find providers with taxonomy 207K00000X?
Browse the Allergy & Immunology directory, or use the NPI search and filter by state.

Source: CMS NPPES (public data). Snapshot 2026-07-09.