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John Marshall III, DMD

NPI 1205356425ActiveIndividual· Dentist· O Fallon, MO

Dentist (DMD) in O Fallon, Missouri, licensed in MO, with an NPI issued in June 2017. Part D covered 180 prescriptions written in 2024, 93% of them generic. Colgate Oral Pharmaceuticals, Inc. was the largest of 4 companies reporting payments in 2025, $178.19 in all, mostly food and beverage.

Overview

NPI1205356425
StatusActive
Entity typeIndividual
CredentialDMD
Sole proprietorYes
NPI issuedJun 20, 2017
Last updated in NPPESSep 22, 2018

Specialties and licenses

TaxonomyCodeLicenseState
Dentist Primary122300000X2018011363MO
Dentist, General Practice1223G0001X2018011363MO

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Oct 9, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 10, 2026No match—
New York OMIG · Nov 10, 2026No match—
Ohio Medicaid · Nov 10, 2026No match—
Pennsylvania Medicheck · Nov 10, 2026No match—
Washington HCA · Nov 10, 2026No match—

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

Medicare

Enrollment (PECOS)Not in the public enrollment file of Oct 1, 2026

Part D prescriptions in 2024

Prescriptions (claims)180 · 180 30-day fills
Patients104
Total drug cost$682.05
Generic share93% of claims

Medicare sources and data years

Industry payments (Open Payments)

  • 2025$178.19 · 6 payments from 4 companies
  • 2024$2,168 · 18 payments from 4 companies

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$95.16 · 5 payments
  • Education$83.03 · 1 payment

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

Other Dentist providers in O Fallon

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