Mary Sue Butler , LP
Psychologist • Duluth, MN
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Notice of NPI Deactivation & Inactive Practice Status
According to official public domain records published by CMS (Centers for Medicare & Medicaid Services) in the National Provider Identifier (NPPES) Registry, Mary Butler has officially deactivated this NPI record and ceased active healthcare practice.
Professional Overview & Biography Verified Profile Summary
Mary Butler, LP was a registered Psychologist practicing in Duluth, MN. Throughout an active medical career spanning 20 years, Mary Butler provided care at the practice location at 1401 EAST 1ST STREET until profile deactivation on 2026-02-26.
Practice Location & Contact Primary Location
1401 East 1st Street
Duluth, MN 55805
Specialty Benchmarks & Practice Insights
Comparative analytics for Psychologist in Duluth, MN
Practicing in Duluth, MN (1833 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Medical Specialties & State Licenses
NUCC Taxonomy Code: 103T00000X
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.
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Registered Nurse
Registered Nurse
Social Worker - Clinical
Master of Social Work, Licensed Independent Clinical Social Worker
Psychologist
Licensed Psychologist
Social Worker - Clinical
Master of Social Work, Licensed Independent Clinical Social Worker
Counselor - Professional
Counselor - Addiction (Substance Use Disorder)
Licensed Alcohol and Drug Counselor
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Record deactivated on February 26, 2026
NPI status registered as active in NPPES database
Registered at 1401 EAST 1ST STREET, DULUTH, MN 55805 (Tel: 2187284491)
Registered at 1401 EAST FIRST STREET, DULUTH, MN 55805 (Tel: 2187284404)
Recorded as MARY BUTLER, LP
Psychologist (License #LP2211 in MN)
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
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NPI Administrative Meta
Mailing Address
1401 East First Street
Duluth, MN 55805
Phone: 2187284404
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