David E. Thornsen, PSYD
Clinical Psychologist · Grand Rapids, MI
David E. Thornsen, PSYD is a clinical psychologist with a practice address in Grand Rapids, Michigan, and NPI 1356303556, issued on Apr 4, 2006. Check the license (Michigan 6301012067, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- David E. Thornsen
- Credential
- PSYD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 6301012067 MI
Self-reported in NPPES; status is on the state search - Practice location
- 500 Cascade West Pkwy SE Ste 240, Grand Rapids, MI 49546
- Phone
- (616) 591-9000
- Enumerated
- Apr 4, 2006
- Record last updated
- Apr 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (616) 591-9004
- Medicare enrollment
- Enrolled (PECOS I20050913001203); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 2,965 in Michigan → Look up another NPI →
Also registered at 500 Cascade West Pkwy SE Ste 240
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jenny Chien, LPCProfessional Counselor1891946554
- Andrew Donaldson, MA, LLPCProfessional Counselor1235666561
- Mia Flynn, TLLPProfessional Counselor1750277000
- Karen Fujii, M.S.W.Clinical Social Worker1083648463
Verify David E. Thornsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 6301012067Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Grand Rapids Therapy Group, IncGrand Rapids, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David E. Thornsen among 2,965 clinical psychologist records in Michigan
David E. Thornsen, PSYD is one of 2,965 clinical psychologist records with a practice address in Michigan. 13% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 79% newer
- In a Medicare fileYes · 13% of these records are
- In the CMS Doctors and Clinicians fileYes · 24% of these records are
- Graduated2002 · median 2005 among the 697 with a school on file
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
183 clinical psychologist records list a practice address in Grand Rapids
They are 183 of the 18,005 NPPES records with a practice address in Grand Rapids, and 2,965 clinical psychologist records in Michigan.
All 2,965 in Michigan → Every provider in Grand Rapids → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Theresa Anderson-Varney, PHDGrand Rapids, MI 495461760489793
- Dorothy Garnett, MA LLPGrand Rapids, MI 495461427028463
- David Hamilton, PSYDGrand Rapids, MI 495461326008483
- M Kay Hannah, PHD LLPGrand Rapids, MI 495461336119379
- Barbara Homrich, MA LLPGrand Rapids, MI 495461760469027
- Theodore Jansma, PHDGrand Rapids, MI 495461316924525
- Michael Makedonsky, PHDGrand Rapids, MI 495461760466056
- Lori Reineke, PH.D.Grand Rapids, MI 495461790765170
Common questions
What is David E. Thornsen, PSYD's NPI number?
David E. Thornsen, PSYD's National Provider Identifier (NPI) is 1356303556, issued on Apr 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David E. Thornsen, PSYD located?
The NPPES record lists a practice address at 500 Cascade West Pkwy SE Ste 240, Grand Rapids, MI, 49546. Phone: (616) 591-9000. Providers update this record themselves, so call before visiting.
How can I verify David E. Thornsen, PSYD's license?
NPPES lists Michigan license number 6301012067, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.