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

Thomas Joseph McMahon, PHD

Individual provider Psychologist · NPI 1174734438

Thomas Joseph McMahon, PHD is a Psychologist in New Haven, Connecticut. Licensed in Connecticut. Registered with an NPI since 2007.

Licensed in
CT
In the registry since
2007
Specialties on file
2
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

34 Park St Connecticut Mental Health Ctr
New Haven, CT 06519
Phone: (203) 974-7417
Fax: (203) 974-7413
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Child & Adolescent Psychologist (primary) Taxonomy 103TC2200X · Licence 001969 (CT)
Psychologist Taxonomy 103T00000X · Licence 001969 (CT)

Record details

NPI number1174734438
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedMay 25, 2007
Last updated in NPPESSeptember 11, 2025
Mailing address34 Park St, Connecticut Mental Health Center Office Of Care Managem, New Haven, CT 06519

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