Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. William Griswold Pinney, PHD

Individual provider Psychologist · NPI 1720013592

Dr. William Griswold Pinney, PHD is a Psychologist in Washington, District of Columbia. Practices as a sole proprietor. Licensed in District of Columbia.

Licensed in
DC
In the registry since
2006
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

2440 M St NW Ste 429
Washington, DC 20037-1404
Phone: (202) 296-7033
Fax: (202) 223-3939
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PSY1772 (DC)

Record details

NPI number1720013592
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJuly 11, 2006
Last updated in NPPESJuly 8, 2007

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