DR. WILLIAM ARTHUR WINN III ED.D
NPI 1003053810
Psychologist in Boston, MA

Active since January 15, 2009
66 LONG WHARF, BOSTON, MA 02110(617) 624-3340(617) 523-8197 Get Directions Write a Review

NPPES record last updated: January 15, 2009. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. William Arthur Winn Iii Ed.d NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM ARTHUR WINN III ED.D (NPI 1003053810) is an individual psychologist in Boston, Massachusetts, licensed in Massachusetts (2958) and active in the NPI registry since January 2009.

NPPES Registry Identity

NPI1003053810
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameDR. WILLIAM ARTHUR WINN IIICredential: ED.D
Location Address66 LONG WHARFBoston, MA 02110-3605
Mailing Address66 Long WharfBoston, MA 02110-3605 · (617) 624-3340 · Fax (617) 523-8197
Fax(617) 523-8197
Sole ProprietorYes
Enumeration DateJanuary 15, 2009
NPI 1003053810 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License Licensed in MA · 2958
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.
66 LONG WHARF, Boston, MA 02110

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Winn's NPI number?

The NPI number for William Winn is 1003053810. It was assigned to this individual provider in the NPPES registry on January 15, 2009.

Where is William Winn located?

William Winn practices at 66 Long Wharf, Boston, MA 02110. The listed phone number is (617) 624-3340.

What is William Winn's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

When was this NPI record last updated?

The NPPES record for William Winn was last updated on January 15, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.