103T00000X
Psychologist Health Service Taxonomy Code 103TH0100X
103TH0100X
Level III - Area of Specialization
2,545Registered providers
62Medicare specialty
26.0NUCC version
52States & territories
Definition
A psychologist, certified/licensed at the independent practice level in his/her state, who is duly trained and experienced in the delivery of direct, preventative, assessment, and therapeutic intervention services to individuals whose growth, adjustment, or functioning is actually impaired or is demonstrably at high risk of impairment (1974).
Code Details for 103TH0100X
About Taxonomy Code 103TH0100X
The taxonomy code 103TH0100X identifies Psychologist Health Service within the Behavioral Health & Social Service Providers provider grouping. It is a Level III — Area of Specialization code, the most specific tier: it narrows the parent classification to a defined subspecialty.
NPI records show 2,545 registered providers whose primary or secondary taxonomy is this code. Of these, 516 (20%) are registered as organizations and 2,029 (80%) as individual providers. The states with the most psychologist health service providers are California (230), Massachusetts (195), North Carolina (172). For Medicare enrollment, it crosswalks to specialty code 62 (Psychologist).
Taxonomy codes are self-selected by the provider based on their education and training; they describe the provider's type and specialty, not the specific services rendered.
Provider Composition & Statistics
2,545Total providers
516Organizations 20%
2,029Individuals 80%
1,297Female
728Male
4Undisclosed
Gender is recorded for individual providers only; organizations are not gendered. Source: NPPES, last updated 2026-07-19T00:00:00.
View all 2,545 providersPsychologist Health Service Providers by State
Provider counts by U.S. state and territory. Select a state to open its provider directory.
All states (nationwide)
2,545
Alabama14Alaska2Arizona56Arkansas10California230Colorado44Connecticut15Delaware14District Of Columbia27Florida134Georgia50Hawaii24Idaho3Illinois85Indiana124Iowa31Kansas13Kentucky34Louisiana22Maine9Maryland36Massachusetts195Michigan77Minnesota54Mississippi8Missouri46Montana3Nebraska14Nevada37New Hampshire14New Jersey38New Mexico12New York90North Carolina172North Dakota5Ohio96Oklahoma80Oregon41Pennsylvania58Puerto Rico63Rhode Island5South Carolina21South Dakota3Tennessee85Texas161Utah9Vermont3Virginia31Washington43West Virginia12Wisconsin29Wyoming3
Frequently Asked Questions
103TH0100X questionsNPPES lists 2,545 registered providers with this taxonomy code (Psychologist Health Service).
Both. About 20% of these providers are registered as organizations and 80% as individuals.
It crosswalks to Medicare specialty code 62 (Psychologist).
It is a Level III - Area of Specialization code in the NUCC Health Care Provider Taxonomy set. As an area of specialization, it falls under the Psychologist classification (parent code 103T00000X).
Use the "Providers by state" directory on this page to open the list of psychologist health service providers registered in any U.S. state.
Source: National Uniform Claim Committee (NUCC) Health Care Provider Taxonomy code set, Version 26.0. Provider counts from NPPES. See nucc.org.
