NUCC taxonomy code

1223P0300X - Periodontics

1223P0300X is the NUCC provider taxonomy code for Periodontics, a specialization within Dentist (individual providers). 8,809 providers in our latest NPPES snapshot list it as their primary taxonomy.

8,809 providers · primary taxonomy

Code breakdown

Taxonomy code 1223P0300X

Display name Periodontics

Grouping Dental Providers

Classification Dentist

Specialization Periodontics

Section Individual

Directory Dentist provider directory

Definition

That specialty of dentistry which encompasses the prevention, diagnosis and treatment of diseases of the supporting and surrounding tissues of the teeth or their substitutes and the maintenance of the health, function and esthetics of these structures and tissues.

Definition from the NUCC Health Care Provider Taxonomy code set.

Related taxonomy codes

122300000X Dentist 1223D0004X Dental Anesthesiology (Dentist) 1223D0001X Public Health Dentistry (Dentist) 1223E0200X Endodontics (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)

Frequently asked questions

What does taxonomy code 1223P0300X mean?

1223P0300X is the NUCC Health Care Provider Taxonomy code for Periodontics, 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 1223P0300X?

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

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