Developmental Therapist
17,038 active US providers register Developmental Therapist as their primary taxonomy. That is 0.2% of every provider in the registry, and the 93rd largest of 584 specialties with a page here.
- Taxonomy code
- 222Q00000X
- Grouping
- Respiratory, Developmental, Rehabilitative and Restorative Service Providers
- Classification
- Developmental Therapist
- Active providers
- 17,038
- States covered
- 48 of 51
What the code means
A Developmental Therapist is a person qualified by completion of an approved program in Developmental Therapy and where applicable credentialed by the state and practicing within the scope of the credential, or credentialed by completion of education experiences as approved by the state and practicing within the scope of that credential or, where state credentialing does not exist, certified by the Board of the Developmental Therapy Association. A developmental therapist evaluates children's global development in order to identify areas of developmental delay whether arising from physiological, neurological, or environmental factors, or a combination of factors; and designs, implements, and modifies therapeutic interventions for the child and the family to promote the child's acquisition of skills in a variety of developmental areas, including cognitive processes and social interaction in order to maximize functional independence and developmental homeostasis, and improve the quality of life at home and in the community; and provides consultation for the parents and other professionals working with the family on global development.
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 |
|---|---|---|
| Massachusetts | 5,239 | |
| Florida | 4,435 | |
| Illinois | 2,872 | |
| Indiana | 936 | |
| Kentucky | 751 | |
| New York | 472 | |
| Arkansas | 344 | |
| North Carolina | 315 | |
| Connecticut | 211 | |
| Idaho | 165 | |
| Pennsylvania | 155 | |
| Texas | 150 | |
| California | 124 | |
| Louisiana | 115 | |
| Virginia | 108 |
Showing the 15 largest of 48 states with at least one.
Who registers under this code
16,703 of these are people and 335 are organisations, so 2% of the code is businesses rather than clinicians. Half of them had registered by 2016, and 4,376 registered in the last five years, 26% of the current population.
That is close to the pace of the registry as a whole.
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.
- MILFORD, MA2,109
- POMPANO BEACH, FL879
- WORCESTER, MA741
- DEERFIELD BEACH, FL677
- CHICAGO, IL666
- DANVERS, MA500
- JACKSONVILLE, FL238
- TAMPA, FL234
- MIAMI, FL231
- INDIANAPOLIS, IN200
What else they list
Providers whose primary code is Developmental Therapist 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 |
|---|---|---|
| Behavior Technician | 311 | 1.8% |
| Early Intervention Provider Agency | 125 | 0.7% |
| Social Worker | 123 | 0.7% |
| Behavior Analyst | 116 | 0.7% |
| Case Manager/Care Coordinator | 106 | 0.6% |
| Speech-Language Assistant | 77 | 0.5% |
| Specialist | 73 | 0.4% |
| Mental Health Counselor | 64 | 0.4% |
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.