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

Mary Beth Johnston, PHD

Individual provider Psychologist · NPI 1598709024

Mary Beth Johnston, PHD is a Psychologist in Middlebury, Connecticut. Practices as a sole proprietor. Licensed in Connecticut.

Licensed in
CT
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

900 Straits Tpke D
Middlebury, CT 06762-2800
Phone: (203) 270-5575
Fax: (203) 883-0365
Show map & directions

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

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 1439 (CT)

Record details

NPI number1598709024
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedJune 15, 2006
Last updated in NPPESApril 17, 2013