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

William C Irving PHD PLLC

Organization Adult Development & Aging Psychologist · NPI 1265603716

William C Irving PHD PLLC is an Adult Development & Aging Psychologist in Saint Clair Shores, Michigan. Registered with an NPI since 2008.

In the registry since
2008
Specialties on file
2
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Practice location Address checks out

22811 Greater Mack Ave Ste 202
Saint Clair Shores, MI 48080-2021
Phone: (586) 443-4402
Fax: (586) 443-4412
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Child & Adolescent Psychologist (primary) Taxonomy 103TC2200X
Adult Development & Aging Psychologist Taxonomy 103TA0700X

Record details

NPI number1265603716
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Judy I. — Office Manager · (586) 443-4402
NPI enumeratedMarch 12, 2008
Last updated in NPPESJanuary 26, 2012
Mailing address22811 Greater Mack Ave, Suite 202, Saint Clair Shores, MI 48080-2021