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

Dr. William Thomas Barker, PSYD

Individual provider Clinical Psychologist · NPI 1891122636

Dr. William Thomas Barker, PSYD is a Clinical Psychologist in APO, Armed Forces Pacific. Licensed in Illinois. Registered with an NPI since 2013.

Licensed in
IL
In the registry since
2013
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

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Practice location Address may be wrong

The ZIP code does not match the city and state on this record. Call before visiting.

Opc 371 Box 39
APO, AP 96271-9001
Phone: (315) 737-4817

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 071008688 (IL)

Record details

NPI number1891122636
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorNo
NPI enumeratedOctober 10, 2013
Last updated in NPPESJuly 7, 2025
Certification dateJune 23, 2025
Mailing addressOpc 371 Box 39, Apo, AP 96271-9001

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