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Michael D. Klein, M.D.

NPI 1073541256ActiveIndividual· Internal Medicine, Cardiovascular Disease· Boston, MA

Internal Medicine, Cardiovascular Disease (M.D.) in Boston, Massachusetts, trained at New York University School of Medicine (class of 1961). Their prescriptions cost Medicare Part D more than their services did: $179,580 for 956 claims, against $37,218 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. reported $124.99 in payments in 2025, mostly food and beverage.

Overview

NPI1073541256
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorNo
NPI issuedJun 28, 2006
Last updated in NPPESAug 5, 2016

Specialties and licenses

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

Medicare services in 2024

Medicare patients2,751
Services billed5,330 across 6 procedure codes
Paid by Medicare$37,218

Part D prescriptions in 2024

Prescriptions (claims)956 · 1,885 30-day fills
Patients94
Total drug cost$179,580
Generic share81% of claims

Medicare sources and data years

Education and affiliations

Medical schoolNew York University School of Medicine
Graduation year1961
Medicare specialtyCardiovascular Disease (Cardiology)

Medical group

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$124.99 · 1 payment from 1 company
  • 2024$239.83 · 2 payments from 2 companies

Top paying companies in 2025

CompanyAmountPayments
Bayer Healthcare Pharmaceuticals Inc.$124.991

What the 2025 payments were for

  • Food and Beverage$124.99 · 1 payment

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

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