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

William McMullen, PHD

Individual provider Psychologist · NPI 1871082834

William McMullen, PHD is a Psychologist in Cambridge, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2018
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

109 Antrim St
Cambridge, MA 02139-1133
Phone: (617) 547-7186
Fax: (617) 547-7186
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 2422-PY-PR (MA)

Record details

NPI number1871082834
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedMay 5, 2018
Last updated in NPPESMay 5, 2018
Mailing address109 Antrim St, Cambridge, MA 02139-1133

Other providers in Cambridge