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Glenn Alan McGrath, MD

NPI 1598766982ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Willow Grove, PA

Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in Willow Grove, Pennsylvania, trained at Pennsylvania State University College of Medicine (class of 1987). Their prescriptions cost Medicare Part D more than their services did: $1,723,764 for 6,640 claims, against $185,240 paid for services in 2024. Medtronic, Inc. was the largest of 5 companies reporting payments in 2025, $1,698 in all, mostly travel and lodging.

Overview

NPI1598766982
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedAug 9, 2005
Last updated in NPPESFeb 14, 2018

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 - Endocrinology (PA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients469
Services billed6,691 across 18 procedure codes
Paid by Medicare$185,240

Part D prescriptions in 2024

Prescriptions (claims)6,640 · 12,822 30-day fills
Patients569
Total drug cost$1,723,764
Generic share62% of claims

Medicare sources and data years

Education and affiliations

Medical schoolPennsylvania State University College of Medicine
Graduation year1987
Medicare specialtyEndocrinology
TelehealthOffers telehealth

Medical group

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$1,698 · 32 payments from 5 companies
  • 2024$513.81 · 17 payments from 9 companies

Top paying companies in 2025

What the 2025 payments were for

  • Travel and Lodging$851.30 · 6 payments
  • Food and Beverage$846.73 · 26 payments

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

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