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

William Parker PHD PC

Organization Clinical Psychologist · NPI 1821339250

William Parker PHD PC provides Clinical Psychologist services in Grand Rapids, Michigan. Licensed in Michigan. Registered with an NPI since 2013.

Licensed in
MI
In the registry since
2013
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

2894 Thornapple River Dr SE
Grand Rapids, MI 49546-6857 Not confirmed with CMS for 13 years — call before visiting
Phone: (616) 285-6080
Fax: (616) 285-5466
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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 6301007243 (MI)

Record details

NPI number1821339250
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official William Parker — Owner · (616) 285-6080
NPI enumeratedMarch 11, 2013
Last updated in NPPESMarch 11, 2013
Mailing address2894 Thornapple River Dr Se, Grand Rapids, MI 49546-6857

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