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
Mailing address900 Straits Tpke, D, Middlebury, CT 06762-2800