Clinical Social Worker
348,763 active US providers register Clinical Social Worker as their primary taxonomy. That is 3.7% of every provider in the registry, and the 2nd largest of 584 specialties with a page here.
- Taxonomy code
- 1041C0700X
- Grouping
- Behavioral Health & Social Service Providers
- Classification
- Social Worker
- Specialization
- Clinical
- Active providers
- 348,763
- States covered
- 51 of 51
What the code means
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
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 | 37,482 | |
| New York | 31,589 | |
| Michigan | 20,385 | |
| Massachusetts | 18,860 | |
| North Carolina | 17,205 | |
| Illinois | 16,033 | |
| Florida | 15,486 | |
| Texas | 13,168 | |
| New Jersey | 11,446 | |
| Ohio | 10,709 | |
| Maryland | 10,598 | |
| Virginia | 9,108 | |
| Connecticut | 9,060 | |
| Pennsylvania | 8,845 | |
| Colorado | 8,454 |
Showing the 15 largest of 51 states with at least one.
Who registers under this code
311,635 of these are people and 37,128 are organisations, so 11% of the code is businesses rather than clinicians. Half of them had registered by 2016, and 101,017 registered in the last five years, 29% 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.
- NEW YORK, NY7,352
- CHICAGO, IL5,174
- LOS ANGELES, CA4,928
- BROOKLYN, NY3,679
- BALTIMORE, MD2,196
- WASHINGTON, DC2,094
- SAN DIEGO, CA2,085
- DENVER, CO2,064
- PORTLAND, OR2,063
- BOSTON, MA1,981
What else they list
Providers whose primary code is Clinical Social Worker 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 |
|---|---|---|
| Social Worker | 20,676 | 5.9% |
| Mental Health Counselor | 12,293 | 3.5% |
| Addiction (Substance Use Disorder) Counselor | 8,469 | 2.4% |
| Counselor | 3,357 | 1.0% |
| Case Manager/Care Coordinator | 3,264 | 0.9% |
| Student in an Organized Health Care Education/Training Program | 2,884 | 0.8% |
| School Social Worker | 2,072 | 0.6% |
| Professional Counselor | 1,908 | 0.5% |
Nearby specialties
Other taxonomies NUCC files under Social Worker.
- Social Worker138,355
- School Social Worker6,442
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.