103T00000X — Psychologist
103T00000X is the NUCC provider taxonomy code for Psychologist (individual providers). 57,173 providers in our latest NPPES snapshot list it as their primary taxonomy.
| Taxonomy code | 103T00000X |
|---|---|
| Display name | Psychologist |
| Grouping | Behavioral Health & Social Service Providers |
| Classification | Psychologist |
| Section | Individual |
| Directory | Psychologist provider directory |
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
Definition from the NUCC Health Care Provider Taxonomy code set.
Related taxonomy codes
- 103TA0400X — Addiction (Substance Use Disorder) Psychologist (Psychologist)
- 103TA0700X — Adult Development & Aging Psychologist (Psychologist)
- 103TC0700X — Clinical Psychologist (Psychologist)
- 103TC2200X — Clinical Child & Adolescent Psychologist (Psychologist)
- 103TB0200X — Cognitive & Behavioral Psychologist (Psychologist)
- 103TC1900X — Counseling Psychologist (Psychologist)
- 103TE1000X — Psychologist (Psychologist)
- 103TE1100X — Exercise & Sports Psychologist (Psychologist)
Frequently asked questions
What does taxonomy code 103T00000X mean?
Where is the taxonomy code used?
How do I find providers with taxonomy 103T00000X?
Source: CMS NPPES (public data). Snapshot 2026-07-09.