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Gillian Gabrielle Treadwell, MD

NPI 1205178688ActiveIndividual· Ophthalmology· Winston Salem, NC

Ophthalmology (MD) in Winston Salem, North Carolina, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2013). Their prescriptions cost Medicare Part D more than their services did: $391,339 for 5,212 claims, against $63,063 paid for services in 2024. Alcon Vision LLC reported $1,026 in payments in 2025, mostly travel and lodging.

Overview

NPI1205178688
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedMar 22, 2013
Last updated in NPPESJul 2, 2019

Specialties and licenses

TaxonomyCodeLicenseState
Ophthalmology Primary207W00000X2018-01784NC
Ophthalmology207W00000X4301106083MI

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 - Ophthalmology (NC)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients317
Services billed1,256 across 26 procedure codes
Paid by Medicare$63,063

Part D prescriptions in 2024

Prescriptions (claims)5,212 · 9,504 30-day fills
Patients690
Total drug cost$391,339
Generic share75% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Graduation year2013
Medicare specialtyOphthalmology

Medical groups

Hospital affiliation

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$1,026 · 5 payments from 1 company
  • 2024$141.81 · 2 payments from 2 companies

Top paying companies in 2025

CompanyAmountPayments
Alcon Vision LLC$1,0265

What the 2025 payments were for

  • Travel and Lodging$666.26 · 2 payments
  • Food and Beverage$359.36 · 3 payments

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

Other ophthalmologists in Winston Salem

All 62 ophthalmologists in Winston Salem · All ophthalmologists in North Carolina