Dental Providers / 122300000X
Individual · classification · Medicare specialty C5
122300000X Dentist
122300000X is the taxonomy code for Dentist, in the NUCC group “Dental Providers”. It is a code for individual providers — the kind used on a Type 1 NPI. Medicare maps it to specialty C5, Dentist, under which 6,038 practitioners are enrolled.
- 1Taxonomy code 122300000X
- 2Level Classification
- 3Medicare specialty C5 Dentist
- 4Codes in this group 20
Definition
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 122300000X sits
- Group: Dental Providers — code 6 of 20 in the group
- Classification: Dentist 122300000X
This is the general code for Dentist. 13 more specific codes sit beneath it; pick one of those when the provider's training or certification matches it, and this one otherwise. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
CMS's taxonomy crosswalk links 122300000X to Medicare specialty C5 (Dentist). That specialty — not the taxonomy code itself — is what Medicare enrollment records and uses for payment. 6,038 practitioners are enrolled under it nationally, and 1 other taxonomy code map to the same specialty.
Other codes under the same Medicare specialty: 1223G0001X General Practice Dentistry.
Related codes
| Code | Dentist — specializations |
|---|---|
| 1223D0004X | Dental Anesthesiology |
| 1223D0001X | Dental Public Health |
| 1223E0200X | Endodontics |
| 1223G0001X | General Practice |
| 1223P0106X | Oral and Maxillofacial Pathology |
| 1223X0008X | Oral and Maxillofacial Radiology |
| 1223S0112X | Oral and Maxillofacial Surgery |
| 125Q00000X | Oral Medicine |
| 1223X2210X | Orofacial Pain |
| 1223X0400X | Orthodontics and Dentofacial Orthopedics |
| 1223P0221X | Pediatric Dentistry |
| 1223P0300X | Periodontics |
| 1223P0700X | Prosthodontics |
History of 122300000X
NUCC's notes record no dated changes for 122300000X. The code set is republished every January and July, when codes are added, retitled or marked inactive; this page reflects version 26.1, so check the NUCC site if you are reading it after the next release.
Find providers with 122300000X
Using 122300000X
The code goes in the taxonomy field of the NPI application in NPPES, and on claims where a payer asks for it — box 24J (shaded) or 33b on the CMS-1500 with the ZZ qualifier, or the PRV segment of an 837 electronic claim. Payers match it against the taxonomy on the NPI record and, for Medicare, against the specialty on the enrollment, so all three should agree. To see which code a provider uses, search their NPI in the lookup.
Sources: NUCC Health Care Provider Taxonomy code set, version 26.1 (CSV); CMS Medicare Provider and Supplier Taxonomy Crosswalk, August 2026; CMS Medicare Fee-For-Service Public Provider Enrollment, extract of 2026-09-29. Checked 2026-10-24. Methodology.