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

Dr. William Henry Mertz, PHD

Individual provider Psychologist · NPI 1639242340

Dr. William Henry Mertz, PHD is a Psychologist in Akron, Ohio. Licensed in Ohio. Registered with an NPI since 2006.

Licensed in
OH
In the registry since
2006
Specialties on file
3
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

312 Locust St
Akron, OH 44302-1801
Phone: (330) 762-0591
Fax: (330) 762-2242
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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 2380 (OH)
Psychologist Taxonomy 103T00000X · Licence 2380 (OH)
Clinical Psychologist Taxonomy 103TC0700X · Licence 2380 (OH)

Record details

NPI number1639242340
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedNovember 17, 2006
Last updated in NPPESSeptember 11, 2025

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