Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Stephen Marshall, PHD

Individual provider Psychologist · NPI 1235651290

Dr. Stephen Marshall, PHD is a Psychologist in Arlington, Massachusetts. Works from 2 locations. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2017
Specialties on file
3
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

226 Massachusetts Ave Ste 2A
Arlington, MA 02474-8449
Phone: (617) 977-4770
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 22 Mill St Ste 108, Arlington, MA 02476-4738 — (617) 855-3519

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X (MA)
Cognitive & Behavioral Psychologist Taxonomy 103TB0200X
Clinical Psychologist Taxonomy 103TC0700X · Licence 11006 (MA)

Record details

NPI number1235651290
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedJuly 12, 2017
Last updated in NPPESSeptember 28, 2026
Certification dateSeptember 28, 2026

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