Allergy & Immunology Physician: NPI taxonomy code 207K00000X
Taxonomy code 207K00000X is Allergy & Immunology, in the Allopathic & Osteopathic Physicians group.
5,536 active NPIs list it as their primary specialty (<0.1% of all).
| Code | 207K00000X |
|---|---|
| Group | Allopathic & Osteopathic Physicians |
| Classification | Allergy & Immunology |
| Used for | individual providers (the code is in NUCC's Individual section) |
| Active NPIs, primary specialty | 5,536 (3,939 individuals, 1,597 organizations) |
What NUCC says: An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. (excerpt of the NUCC 26.1 definition)
Find Allergy & Immunology Physician providers
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Where they are
| State | Active NPIs | Share |
|---|---|---|
| California | 586 | 10.6% |
| Texas | 511 | 9.2% |
| New York | 421 | 7.6% |
| Florida | 337 | 6.1% |
| Pennsylvania | 246 | 4.4% |
| Illinois | 219 | 4.0% |
| Michigan | 203 | 3.7% |
| New Jersey | 201 | 3.6% |
| North Carolina | 187 | 3.4% |
| Ohio | 185 | 3.3% |
Top states by practice location, from the NPPES file of September 13, 2026.
Related specialties
Specialty definitions are from the NUCC Health Care Provider Taxonomy (version 26.1). Which code to use on a claim depends on your NPPES record and your payer. See taxonomy codes explained.