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

Dr. John Richard Shack, PHD

Individual provider Clinical Psychologist · NPI 1942478706

Dr. John Richard Shack, PHD is a Clinical Psychologist in Douglas, Michigan. Practices as a sole proprietor. Licensed in Michigan.

Licensed in
MI
In the registry since
2008
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

713 Wilderness Dr
Douglas, MI 49406-0140
Phone: (269) 857-8644
Fax: (269) 857-8644
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 6301011374 (MI)

Record details

NPI number1942478706
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedFebruary 14, 2008
Last updated in NPPESFebruary 14, 2008