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

Matthew Duffy, PHD

Individual provider Clinical Psychologist · NPI 1174849483

Matthew Duffy, PHD is a Clinical Psychologist in Arlington, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2010
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

94 Pleasant St Ste 16
Arlington, MA 02476
Phone: (781) 646-0649
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 9132 (MA)

Record details

NPI number1174849483
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedApril 12, 2010
Last updated in NPPESJune 23, 2018
Mailing addressPo Box 400762, Cambridge, MA 02140-0008

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