104100000X — Social Worker
104100000X is the NUCC provider taxonomy code for Social Worker (individual providers). 137,394 providers in our latest NPPES snapshot list it as their primary taxonomy.
| Taxonomy code | 104100000X |
|---|---|
| Display name | Social Worker |
| Grouping | Behavioral Health & Social Service Providers |
| Classification | Social Worker |
| Section | Individual |
| Directory | Social Worker provider directory |
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
Definition from the NUCC Health Care Provider Taxonomy code set.
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Related taxonomy codes
- 1041C0700X — Clinical Social Worker (Social Worker)
- 1041S0200X — School Social Worker (Social Worker)
- 106E00000X — Assistant Behavior Analyst
- 106S00000X — Behavior Technician
- 103K00000X — Behavior Analyst
- 103G00000X — Clinical Neuropsychologist
- 103GC0700X — Clinical Neuropsychologist (Clinical Neuropsychologist)
- 101Y00000X — Counselor
Frequently asked questions
What does taxonomy code 104100000X mean?
104100000X is the NUCC Health Care Provider Taxonomy code for Social Worker in the "Behavioral Health & Social Service Providers" grouping. It classifies individual providers.
Where is the taxonomy code used?
Providers select a taxonomy code when applying for an NPI, and it appears on insurance claims (CMS-1500 box 33b / 837 electronic claims) to identify the provider's classification. Payers may require the taxonomy that matches your credential and license.
How do I find providers with taxonomy 104100000X?
Browse the Social Worker directory, or use the NPI search and filter by state.
Source: CMS NPPES (public data). Snapshot 2026-07-09.