1223X0400X — Orthodontics and Dentofacial Orthopedics Dentistry

1223X0400X is the NUCC provider taxonomy code for Orthodontics and Dentofacial Orthopedics Dentistry, a specialization within Dentist (individual providers). 21,164 providers in our latest NPPES snapshot list it as their primary taxonomy.

Taxonomy code 1223X0400X
Display name Orthodontics and Dentofacial Orthopedics Dentistry
Grouping Dental Providers
Classification Dentist
Specialization Orthodontics and Dentofacial Orthopedics
Section Individual
Directory Dentist provider directory

Definition

That area of dentistry concerned with the supervision, guidance and correction of the growing or mature dentofacial structures, including those conditions that require movement of teeth or correction of malrelationships and malformations of their related structures and the adjustment of relationships between and among teeth and facial bones by the application of forces and/or the stimulation and redirection of functional forces within the craniofacial complex. Major responsibilities of orthodontic practice include the diagnosis, prevention, interception and treatment of all forms of malocclusion of the teeth and associated alterations in their surrounding structures; the design, application and control of functional and corrective appliances; and the guidance of the dentition and its supporting structures to attain and maintain optimum occlusal relations in physiologic and esthetic harmony among facial and cranial structures.

Definition from the NUCC Health Care Provider Taxonomy code set.

Related taxonomy codes

Frequently asked questions

What does taxonomy code 1223X0400X mean?
1223X0400X is the NUCC Health Care Provider Taxonomy code for Orthodontics and Dentofacial Orthopedics Dentistry, 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 1223X0400X?
Browse the Dentist directory, or use the NPI search and filter by state.

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