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Stephen J. Matse, DO

NPI 1427054642ActiveIndividual· Internal Medicine· Johnstown, PA

Internal Medicine (DO) in Johnstown, Pennsylvania, trained at Philadelphia College of Osteopathic Medicine (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $822,075 for 11,045 claims, against $33,162 paid for services in 2024. Pfizer Inc. was the largest of 14 companies reporting payments in 2025, $944.34 in all, mostly food and beverage.

Overview

NPI1427054642
StatusActive
Entity typeIndividual
CredentialDO
Sole proprietorNo
NPI issuedJun 22, 2005
Last updated in NPPESMay 24, 2022
Certified by providerMay 24, 2022

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000XOS009806LPA

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)Enrolled Practitioner - Internal Medicine (PA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients126
Services billed401 across 24 procedure codes
Paid by Medicare$33,162

Part D prescriptions in 2024

Prescriptions (claims)11,045 · 24,115 30-day fills
Patients632
Total drug cost$822,075
Generic share89% of claims

Medicare sources and data years

Education and affiliations

Medical schoolPhiladelphia College of Osteopathic Medicine
Graduation year1994
Medicare specialtyInternal Medicine

Medical groups

Hospital affiliations

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$944.34 · 63 payments from 14 companies
  • 2024$1,111 · 71 payments from 15 companies

Top paying companies in 2025

CompanyAmountPayments
Pfizer Inc.$170.5414
Novo Nordisk Inc$168.7611
Abbvie Inc.$147.7211
Lilly USA, LLC$93.155
Exact Sciences Corporation$72.574

What the 2025 payments were for

  • Food and Beverage$944.34 · 63 payments

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

Other Internal Medicine providers in Johnstown

All Internal Medicine providers in Pennsylvania →