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

Dr. Dennis O'Brien, PSYD

Individual provider Clinical Psychologist · NPI 1306914221

Dr. Dennis O'Brien, PSYD is a Clinical Psychologist in Milton, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2006
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

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Practice location Address checks out

9 Columbine Rd
Milton, MA 02186-1719
Phone: (617) 698-5714
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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 3223 (MA)

Record details

NPI number1306914221
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorYes
NPI enumeratedNovember 30, 2006
Last updated in NPPESJuly 8, 2007

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