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

Dr. Joseph Demers, PHD

Individual provider Psychologist · NPI 1871139196

Dr. Joseph Demers, PHD is a Psychologist in Darien, Connecticut. Practices as a sole proprietor. Licensed in Connecticut.

Licensed in
CT
In the registry since
2019
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

330 Post Rd
Darien, CT 06820-3600
Phone: (203) 202-7654
Fax: (203) 202-7655
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 3893 (CT)

Record details

NPI number1871139196
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedNovember 21, 2019
Last updated in NPPESOctober 13, 2020
Certification dateOctober 13, 2020

Other providers in Darien