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John R. Majewski, MD

NPI 1255967352ActiveIndividual· Internal Medicine· South Bend, IN

Internal Medicine (MD) with Good Samaritan Hospital Physician Services Inc and 1 other group, practicing in South Bend, Indiana. 397 Medicare patients in 2024, $81,404 paid; nearly all of their 336 Part D prescriptions were generic (90%). Merck Sharp & Dohme LLC reported $18.40 in payments in 2025, mostly food and beverage. Lists Crawford Memorial Hospital and 2 other hospitals as hospital affiliations.

Overview

NPI1255967352
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedMar 20, 2020
Last updated in NPPESApr 12, 2023
Certified by providerApr 12, 2023

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000X1255967352IN

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 Practitioner - Internal Medicine (IN)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients397
Services billed1,208 across 10 procedure codes
Paid by Medicare$81,404

Part D prescriptions in 2024

Prescriptions (claims)336 · 412 30-day fills
Patients107
Total drug cost$12,506
Generic share90% of claims

Medicare sources and data years

Education and affiliations

Graduation year2019
Medicare specialtyInternal Medicine

Medical groups

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$18.40 · 1 payment from 1 company
  • 2024$79.27 · 3 payments from 1 company

Top paying companies in 2025

CompanyAmountPayments
Merck Sharp & Dohme LLC$18.401

What the 2025 payments were for

  • Food and Beverage$18.40 · 1 payment

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

Other internal medicine physicians in South Bend

All 62 internal medicine physicians in South Bend · All internal medicine physicians in Indiana