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

David E Thornsen, PSYD

Individual provider Clinical Psychologist · NPI 1356303556

David E Thornsen, PSYD is a Clinical Psychologist in Grand Rapids, Michigan. Qualified in 2002, 24 years ago. Practices with Grand Rapids Therapy Group, Inc, a 9-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Michigan.

Years since qualifying
24
Licensed in
MI
In the registry since
2006
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

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Practice location Address checks out

500 Cascade West Pkwy SE Ste 240
Grand Rapids, MI 49546-2166
Phone: (616) 591-9000
Fax: (616) 591-9004
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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 6301012067 (MI)

Record details

NPI number1356303556
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorYes
NPI enumeratedApril 4, 2006
Last updated in NPPESApril 23, 2021
Certification dateApril 23, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Grand Rapids Therapy Group, Inc — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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