Taxonomy Code 103T00000X

Classification: Psychologist

Quick Links : Map of Providers per State | Number of Providers per State


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.


American Psychological Association [1/1/2007: modified definition]

Additional Taxonomy Codes from Psychologist Classification

  • 103TA0400X Addiction (Substance Use Disorder)
  • 103TA0700X Adult Development & Aging
  • 103TB0200X Cognitive & Behavioral
  • 103TC0700X Clinical
  • 103TC1900X Counseling
  • 103TC2200X Clinical Child & Adolescent
  • 103TE1000X Educational
  • 103TE1100X Exercise & Sports
  • 103TF0000X Family
  • 103TF0200X Forensic
  • 103TH0004X Health
    The distinct focus of the clinical health psychologist is on physical health problems. A clinical health psychologist has special expertise or training in clinical health psychology <strong><i>and</strong> applies scientific knowledge of the interrelationships among behavioral, emotional, cognitive, social and biological components in health and disease to the promotion and maintenance of health; the prevention, treatment and rehabilitation of illness and disability; and the improvement of the health care system. Clinical health psychologists are dedicated to the development of knowledge regarding the interface between behavior and health, and to the delivery of high quality services based on that knowledge to individuals, families, and health care.
  • 103TH0100X Health Service
    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).
  • 103TM1700X Men & Masculinity
  • 103TM1800X Mental Retardation & Developmental Disabilities
  • 103TP0016X Prescribing (Medical)
    Those licensed psychologists who have completed specialized, post-doctoral training in psychopharmacology, passed a national proficiency examination in psychopharmacology, and who are authorized by state statute to prescribe medications, in accordance with their state law and state licensing authority, for the evaluation, diagnosis, management and treatment of mental, nervous, emotional, behavioral, and related disorders.
  • 103TP0814X Psychoanalysis
    (1) A practitioner of psychoanalysis: methods of eliciting from patients their past emotional experiences and their role in influencing their current mental life, in order to discover the conflicts and mechanisms by which their pathologic mental state has been produced and to furnish hints for psychotherapeutic procedures, the method employs free association, recall and interpretation of dreams and interpretation of transference and resistance phenomena; (2) An individual who is educated with a doctor’s degree in psychoanalysis or psychology, trained at an established psychoanalytic institute, and practices or adheres to the principles of psychoanalysis. Psychoanalysis is a form of psychotherapy and a system of investigation for determining and understanding mental processes, which was originally conceived by Sigmund Freud. Psychoanalysis involves the analysis and interpretation of dreams, resistances, and transferences, and uses free association and catharsis. Clinical practice requires licensure.
  • 103TP2700X Psychotherapy
  • 103TP2701X Group Psychotherapy
  • 103TR0400X Rehabilitation
  • 103TS0200X School
  • 103TW0100X Women

Volume numbers are based on primary as well as secondary taxonomy codes of Providers.

Psychologist - Psychologist Provider Ratio per 10,000 Population by State

Data based on 2014 Census Population Estimates. Provider information last updated 8/16/2017

Green Color Indicates no Provider(s) recorded for that state

When you move the pointer over a state, it will display more useful information.

The NPI Database was last updated on 8/16/2017 with 5,315,861 records.

Provider(s) data per State with Population Ratio