NUCC taxonomy code

207RI0001X - Clinical & Laboratory Immunology (Internal Medicine) Physician

207RI0001X is the NUCC provider taxonomy code for Clinical & Laboratory Immunology (Internal Medicine) Physician, a specialization within Internal Medicine (individual providers). 43 providers in our latest NPPES snapshot list it as their primary taxonomy.

43 providers · primary taxonomy

Code breakdown

Taxonomy code 207RI0001X

Display name Clinical & Laboratory Immunology (Internal Medicine) Physician

Grouping Allopathic & Osteopathic Physicians

Classification Internal Medicine

Specialization Clinical & Laboratory Immunology

Section Individual

Directory Internal Medicine provider directory

Definition

An internal medicine physician who specializes in clinical and laboratory immunology disease management.

Definition from the NUCC Health Care Provider Taxonomy code set.

Related taxonomy codes

207R00000X Internal Medicine Physician 207RA0401X Addiction Medicine (Internal Medicine) Physician (Internal Medicine) 207RA0000X Adolescent Medicine (Internal Medicine) Physician (Internal Medicine) 207RA0002X Adult Congenital Heart Disease Physician (Internal Medicine) 207RA0001X Advanced Heart Failure and Transplant Cardiology Physician (Internal Medicine) 207RA0201X Allergy & Immunology (Internal Medicine) Physician (Internal Medicine) 207RC0000X Cardiovascular Disease Physician (Internal Medicine) 207RC0001X Clinical Cardiac Electrophysiology Physician (Internal Medicine)

Frequently asked questions

What does taxonomy code 207RI0001X mean?

207RI0001X is the NUCC Health Care Provider Taxonomy code for Clinical & Laboratory Immunology (Internal Medicine) Physician, a specialization of Internal Medicine 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 207RI0001X?

Browse the Internal Medicine directory, or use the NPI search and filter by state.

Source: CMS NPPES (public data). Snapshot 2026-07-13.