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

Individual provider Clinical Psychologist · NPI 1154337939

Gretchen J Diefenbach, PHD is a Clinical Psychologist in Hartford, Connecticut. Licensed in Connecticut. Registered with an NPI since 2006.

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.

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Practice location Address checks out

200 Retreat Avenue Hartford Hospital Anxiety Disorders Ctr
Hartford, CT 06106
Phone: (860) 545-7685
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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 002370 (CT)

Record details

NPI number1154337939
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedJuly 31, 2006
Last updated in NPPESFebruary 21, 2008

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