Taxonomy code 1223G0001X: Dentist, General Practice

1223G0001X is the NUCC Health Care Provider Taxonomy code for Dentist, General Practice, in the group Dental Providers. It is one of the codes a provider lists on the NPI application to tell CMS and payers what they do.

Code

1223G0001X

Grouping

Dental Providers

Classification

Dentist

Specialization

General Practice

Section

Individual

NUCC version

26.1

Definition

A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

NUCC notes: Source: Academy of General Dentistry

Who uses this code

Dentists (the usual code)

Get an NPI with this taxonomy

Two free ways. SimpleNPI files the application for you with 1223G0001X entered from your license type; the NPI usually arrives by email and text, with all the documentation, within 10 minutes. Or apply yourself at nppes.cms.hhs.gov and type the code into the taxonomy field. First, check the free registry in case you already have an NPI.

Option 1 · Free · Easiest

SimpleNPI files it for you

One short form: name, license, contact, address, identity and an e-signed authorization. About 3 minutes, no CMS account to create.
A person checks your license and address, then files the application with CMS under your signed authorization.
Your NPI arrives by email and text, with all the documentation, usually within 10 minutes. Filed after midnight Eastern? It issues around 6 am Eastern.

Usually within 10 minutes after the form is complete.

Start the free application

Option 2 · Free

Apply yourself at NPPES

Create an Identity & Access account at nppes.cms.hhs.gov.
Choose Apply for an NPI for myself, Individual (Type 1).
Enter identity, addresses, taxonomy code and license number, then certify and submit.

Usually a few business days; often minutes when the Social Security match passes.

Go to NPPES

Related codes in Dentist

Code	Name
`122300000X`	Dentist
`1223D0004X`	Dentist, Dental Anesthesiology
`1223D0001X`	Dentist, Dental Public Health
`1223E0200X`	Dentist, Endodontics
`1223P0106X`	Dentist, Oral and Maxillofacial Pathology
`1223X0008X`	Dentist, Oral and Maxillofacial Radiology
`1223S0112X`	Dentist, Oral and Maxillofacial Surgery
`125Q00000X`	Dentist, Oral Medicine
`1223X2210X`	Dentist, Orofacial Pain
`1223X0400X`	Dentist, Orthodontics and Dentofacial Orthopedics
`1223P0221X`	Dentist, Pediatric Dentistry
`1223P0300X`	Dentist, Periodontics

Questions

Is 1223G0001X the right taxonomy code for a dentist?

Yes. 1223G0001X, Dentist, General Practice, is the code SimpleNPI files for dentists. Related codes some choose instead: 122300000X (Dentist), 1223X0400X (Orthodontics and Dentofacial Orthopedics Dentistry), 1223P0221X (Pediatric Dentistry), 1223S0112X (Oral and Maxillofacial Surgery (Dentist)), 1223E0200X (Endodontics), 1223P0300X (Periodontics), 1223P0700X (Prosthodontics).

Can I change my taxonomy code later?

Yes, for free, in your NPPES account. Add the new code with its license, make it primary, and remove the old one if it no longer applies. The NPI itself never changes.

Does 1223G0001X have to match my license?

It should describe the profession your license covers. Payers compare the taxonomy with the license during credentialing, and a mismatch slows that down.

Written by Ammon Hardin, LMT, who grew a massage practice to ten locations, built a veteran therapy network, and credentialed a large number of providers along the way. Updated Tue Oct 27, 2026. Free to read, free to use; SimpleNPI files NPI applications for free.