NPI Lens

Dennis Anthony Thornley, D.D.S.

NPI 1376603423ActiveIndividual· Dentist, General Practice· Grand Haven, MI

Dentist, General Practice (D.D.S.) in Grand Haven, Michigan, licensed in MI, with an NPI issued in December 2006. Part D covered 202 prescriptions written in 2024, 98% of them generic. American Medical & Dental Supplies,inc. was the largest of 2 companies reporting payments in 2025, $64.46 in all, mostly gifts.

Overview

NPI1376603423
StatusActive
Entity typeIndividual
CredentialD.D.S.
Sole proprietorNo
NPI issuedDec 11, 2006
Last updated in NPPESJul 9, 2007

Specialties and licenses

TaxonomyCodeLicenseState
Dentist, General Practice Primary1223G0001X016542MI

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Nov 10, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026No match—
New York OMIG · Nov 11, 2026No match—
Ohio Medicaid · Nov 11, 2026No match—
Pennsylvania Medicheck · Nov 11, 2026No match—
Washington HCA · Nov 11, 2026No match—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)Enrolled Order and Referring Only - Dentist (MI)

Part D prescriptions in 2024

Prescriptions (claims)202 · 202 30-day fills
Patients124
Total drug cost$459.25
Generic share98% of claims

Medicare sources and data years

Industry payments (Open Payments)

  • 2025$64.46 · 3 payments from 2 companies
  • 2024$113.88 · 5 payments from 2 companies

Top paying companies in 2025

CompanyAmountPayments
American Medical & Dental Supplies,inc.$50.002
Philips North America LLC$14.461

What the 2025 payments were for

  • Gift$50.00 · 2 payments
  • Food and Beverage$14.46 · 1 payment

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records

Other general dentists in Grand Haven

All 22 general dentists in Grand Haven · All general dentists in Michigan