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

Dr. Brian Marcus Osullivan, PHD

Individual provider Psychologist · NPI 1467419168

Dr. Brian Marcus Osullivan, PHD is a Psychologist in Northborough, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
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.

See every abbreviation used in this directory →

Practice location Address checks out

2 Whitney St
Northborough, MA 01532-1845
Phone: (508) 831-3030
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 3157 (MA)

Record details

NPI number1467419168
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedApril 27, 2006
Last updated in NPPESMay 29, 2018
Mailing address2 Whitney St, Northborough, MA 01532-1845

Other providers in Northborough