Periodontics
8,809 active US providers register Periodontics as their primary taxonomy. That is 0.09% of every provider in the registry, and the 143rd largest of 584 specialties with a page here.
- Taxonomy code
- 1223P0300X
- Grouping
- Dental Providers
- Classification
- Dentist
- Specialization
- Periodontics
- Active providers
- 8,809
- States covered
- 51 of 51
What the code means
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 quoted verbatim from the NUCC Health Care Provider Taxonomy code set, version 25.1. Not paraphrased.
Where they are
Counted by practice location, not by mailing address or by licence state. A provider practising across a state line is counted where they practise.
| State | Providers | Share |
|---|---|---|
| California | 1,191 | |
| New York | 689 | |
| Florida | 637 | |
| Texas | 627 | |
| Massachusetts | 520 | |
| New Jersey | 396 | |
| Pennsylvania | 317 | |
| Illinois | 300 | |
| Virginia | 281 | |
| Washington | 262 | |
| Michigan | 249 | |
| Ohio | 247 | |
| North Carolina | 226 | |
| Georgia | 219 | |
| Maryland | 202 |
Showing the 15 largest of 51 states with at least one.
Who registers under this code
6,648 of these are people and 2,161 are organisations, so 25% of the code is businesses rather than clinicians. Half of them had registered by 2007, and 881 registered in the last five years, 10% of the current population.
That is a slow-growing code, which usually means an established field replacing retirements rather than expanding.
Where the practices are
By practice-location city. City counts are noisier than state counts, because a large employer files one address for many providers.
- NEW YORK, NY201
- BOSTON, MA162
- HOUSTON, TX100
- LOS ANGELES, CA90
- SAN FRANCISCO, CA77
- CHICAGO, IL73
- PHILADELPHIA, PA73
- SAN ANTONIO, TX68
- DALLAS, TX58
- SAN DIEGO, CA58
What else they list
Providers whose primary code is Periodontics most often carry these secondary taxonomies as well. This is the closest thing the registry has to a map of which specialties overlap in practice, and it is not published anywhere else.
| Also listed | Providers | Share |
|---|---|---|
| Dentist | 573 | 6.5% |
| General Practice Dentistry | 303 | 3.4% |
| Student in an Organized Health Care Education/Training Program | 147 | 1.7% |
| Endodontics | 107 | 1.2% |
| Orthodontics and Dentofacial Orthopedics Dentistry | 67 | 0.8% |
| Prosthodontics | 66 | 0.7% |
| Oral and Maxillofacial Surgery (Dentist) | 54 | 0.6% |
| Dental Clinic/Center | 21 | 0.2% |
Nearby specialties
Other taxonomies NUCC files under Dentist.
- Endodontics9,326
- Prosthodontics4,792
- Oral and Maxillofacial Surgery (Dentist)12,884
- Public Health Dentistry1,800
- Oral and Maxillofacial Pathology Dentistry897
- Dental Anesthesiology550
Looking up a specific provider
These counts come from the monthly NPPES file. To check one provider, use their NPI: the lookup reads the live registry and shows whether the identifier is still active, which the monthly file cannot tell you about the last few weeks.
Counts from npidata_pfile_20050523-20260712.csv, built 2026-08-09. Primary taxonomy only, deactivated identifiers excluded.