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

Dr. Stephen Marshall, PHD

Individual provider Cognitive & Behavioral Psychologist · NPI 1235651290

Dr. Stephen Marshall, PHD is a Cognitive & Behavioral 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.

See every abbreviation used in this directory →

Practice location Address checks out

226 Massachusetts Ave Ste 2A
Arlington, MA 02474-8449
Phone: (617) 977-4770
Show map & directions

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 NPPESJune 5, 2021
Certification dateJune 5, 2021
Mailing addressP.O. Box 1285, E. Arlington, MA 02474-0021

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