Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. William Arthur Winn III, EDD

Individual provider Psychologist · NPI 1003053810

Dr. William Arthur Winn III, EDD is a Psychologist in Boston, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2009
What do these letters mean?
EDD — Doctor of Education
A doctorate in education.

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Practice location Address checks out

66 Long Wharf
Boston, MA 02110-3605
Phone: (617) 624-3340
Fax: (617) 523-8197
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 2958 (MA)

Record details

NPI number1003053810
Entity typeIndividual (Type 1)
GenderMale
Credentials EDD
Sole proprietorYes
NPI enumeratedJanuary 15, 2009
Last updated in NPPESJanuary 15, 2009

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