1223E0200X — Endodontics

1223E0200X is the NUCC provider taxonomy code for Endodontics, a specialization within Dentist (individual providers). 9,272 providers in our latest NPPES snapshot list it as their primary taxonomy.

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 2026-07-09.