NUCC taxonomy code

1223E0200X - Endodontics

1223E0200X is the NUCC provider taxonomy code for Endodontics, a specialization within Dentist (individual providers). 9,326 providers in our latest NPPES snapshot list it as their primary taxonomy.

9,326 providers · primary taxonomy

Code breakdown

Taxonomy code 1223E0200X

Display name Endodontics

Grouping Dental Providers

Classification Dentist

Specialization Endodontics

Section Individual

Directory Dentist provider directory

Definition

The branch of dentistry that is concerned with the morphology, physiology and pathology of the human dental pulp and periradicular tissues. Its study and practice encompass the basic and clinical sciences including biology of the normal pulp, the etiology, diagnosis, prevention and treatment of diseases and injuries of the pulp and associated periradicular conditions.

Definition from the NUCC Health Care Provider Taxonomy code set.

Related taxonomy codes

122300000X Dentist 1223D0004X Dental Anesthesiology (Dentist) 1223D0001X Public Health Dentistry (Dentist) 1223G0001X General Practice Dentistry (Dentist) 1223P0106X Oral and Maxillofacial Pathology Dentistry (Dentist) 1223X0008X Oral and Maxillofacial Radiology Dentistry (Dentist) 1223S0112X Oral and Maxillofacial Surgery (Dentist) (Dentist) 125Q00000X Oral Medicine Dentistry (Dentist)

Frequently asked questions

What does taxonomy code 1223E0200X mean?

1223E0200X is the NUCC Health Care Provider Taxonomy code for Endodontics, a specialization of Dentist in the "Dental Providers" 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 1223E0200X?

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

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