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Thomas B. Williamson, MD

NPI 1295774461ActiveIndividual· Internal Medicine· Huron, OH

Internal Medicine (MD) in Huron, Ohio, trained at University of Rochester School of Medicine and Dentistry (class of 1977). Their prescriptions cost Medicare Part D more than their services did: $580,776 for 7,032 claims, against $49,614 paid for services in 2024. Bard Peripheral Vascular, Inc. was the largest of 2 companies reporting payments in 2025, $104.28 in all, mostly food and beverage.

Overview

NPI1295774461
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedJun 5, 2006
Last updated in NPPESSep 11, 2012

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000X35-04-3844-WOH

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 (OH)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients373
Services billed1,811 across 40 procedure codes
Paid by Medicare$49,614

Part D prescriptions in 2024

Prescriptions (claims)7,032 · 16,224 30-day fills
Patients559
Total drug cost$580,776
Generic share91% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of Rochester School of Medicine and Dentistry
Graduation year1977
Medicare specialtyInternal Medicine

Medical group

Hospital affiliations

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$104.28 · 2 payments from 2 companies
  • 2024$13.34 · 1 payment from 1 company

Top paying companies in 2025

CompanyAmountPayments
Bard Peripheral Vascular, Inc.$89.271
Abbvie Inc.$15.011

What the 2025 payments were for

  • Food and Beverage$104.28 · 2 payments

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

Other internal medicine physicians in Huron

All internal medicine physicians in Ohio