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Michael T. Johnstone, M.D.

NPI 1235164336ActiveIndividual· Internal Medicine, Cardiovascular Disease· Brighton, MA

Internal Medicine, Cardiovascular Disease (M.D.) in Brighton, Massachusetts, trained at M H Kornberg School of Dentistry, Temple University (class of 1982). Their prescriptions cost Medicare Part D more than their services did: $507,667 for 2,090 claims, against $74,924 paid for services in 2024. Siemens Medical Solutions USA, Inc. reported $20.87 in payments in 2025, mostly food and beverage.

Overview

NPI1235164336
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorNo
NPI issuedJul 11, 2006
Last updated in NPPESApr 30, 2026
Certified by providerApr 30, 2026

Specialties and licenses

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 - Cardiovascular Disease (Cardiology) (MA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients806
Services billed1,754 across 41 procedure codes
Paid by Medicare$74,924

Part D prescriptions in 2024

Prescriptions (claims)2,090 · 4,917 30-day fills
Patients200
Total drug cost$507,667
Generic share78% of claims

Medicare sources and data years

Education and affiliations

Medical schoolM H Kornberg School of Dentistry, Temple University
Graduation year1982
Medicare specialtyCardiovascular Disease (Cardiology)
Secondary specialtiesInternal Medicine

Medical groups

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$20.87 · 1 payment from 1 company

Top paying companies in 2025

CompanyAmountPayments
Siemens Medical Solutions USA, Inc.$20.871

What the 2025 payments were for

  • Food and Beverage$20.87 · 1 payment

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

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