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Robert E. Hillyer, MD

NPI 1760595060ActiveIndividual· Internal Medicine, Nephrology· Warren, MI

Internal Medicine, Nephrology (MD) in Warren, Michigan, trained at University of Oklahoma College of Medicine (class of 1980). In 2024 Medicare paid $111,891 for 268 patients, and Part D covered 893 of their prescriptions, 79% of them generic. Bayer Healthcare Pharmaceuticals Inc. was the largest of 5 companies reporting payments in 2025, $193.68 in all, mostly food and beverage.

Overview

NPI1760595060
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedAug 17, 2006
Last updated in NPPESJul 8, 2007

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine, Nephrology Primary207RN0300X4301046767MI

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 (MI)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients268
Services billed1,288 across 26 procedure codes
Paid by Medicare$111,891

Part D prescriptions in 2024

Prescriptions (claims)893 · 2,167 30-day fills
Patients154
Total drug cost$166,731
Generic share79% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of Oklahoma College of Medicine
Graduation year1980
Medicare specialtyInternal Medicine
Secondary specialtiesNephrology
TelehealthOffers telehealth

Medical groups

Hospital affiliations

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$193.68 · 13 payments from 5 companies
  • 2024$40.54 · 2 payments from 2 companies

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$184.30 · 10 payments
  • Education$9.38 · 3 payments

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

Other Internal Medicine, Nephrology providers in Warren

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