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

Dr. Gayle Vincent Callahan, PHD

Individual provider Clinical Psychologist · NPI 1538262191

Dr. Gayle Vincent Callahan, PHD is a Clinical Psychologist in Peoria, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
In the registry since
2006
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

6615 N Big Hollow Rd
Peoria, IL 61615-2451
Phone: (309) 692-6622
Fax: (309) 692-6952
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

School Psychologist (primary) Taxonomy 103TS0200X (IL)
Clinical Psychologist Taxonomy 103TC0700X (IL)

Record details

NPI number1538262191
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedSeptember 7, 2006
Last updated in NPPESSeptember 11, 2025

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