Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. BARRY A WINSTON OD
Prescription History 1609868421
Ophthalmology in Knoxville, TN

Active since August 18, 2005PECOS EnrolledAccepts Medicare Assignment
8609 KINGSTON PIKE, KNOXVILLE, TN 37923(865) 693-3441(865) 769-8272 Get Directions

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. BARRY A WINSTON OD, an active Ophthalmology specialist practicing in Knoxville, TN. Our medical registry currently tracks 1 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 11 documented patient claims. Among these therapy options, the most frequently utilized medication is Tobramycin-Dexamethasone, which accounts for 11 claims alone. Use the table below to sort by claims, cost, or utilization compared with the state average; select any medication for its full profile.

1
Medication
11
Total Claims
11
30-Day Fills
Tobramycin-Dexamethasone
Most Prescribed · 11 claims
View details
1 medication · 2023 Medicare Part D
Medicare Part D medications prescribed by DR. BARRY A WINSTON OD in 2023, with prescription volumes, average cost per fill, and TN state comparisons
Medication Prescriptions (2023)Rx (2023) Avg Cost per FillCost / Fill Vs. Other TN PrescribersVs. TN Avg
Tobramycin-DexamethasoneTobramycin/Dexamethasone11$57.93▼ below TN avg Less than typical

About Tobramycin-Dexamethasone: This medication is used to treat or prevent eye infections. Show more ▾

This medication contains two drugs. Tobramycin belongs to a class of drugs called aminoglycoside antibiotics. It works by stopping the growth of bacteria. Dexamethasone belongs to a class of drugs called corticosteroids. It works by reducing swelling. This medication treats/prevents only bacterial eye infections. It will not work for other types of eye infections. Unnecessary use or overuse of any antibiotic can lead to its decreased effectiveness. A topical preparation of tobramycin and dexamethasone that is used for treating or preventing superficial bacterial infections of the eye.

In 2023, this provider wrote 11 Medicare prescriptions for Tobramycin-Dexamethasone, about a third of the volume of the typical Tennessee prescriber of this medication (27). Medicare paid an average of $57.93 per fill, versus $84.13 statewide.

How often this provider prescribes it

This provider
11
TN average
27.0

This provider prescribes this medication less often than the average TN prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$57.93
TN average
$84.13

This provider's average cost per fill is below the TN average for this medication.

11
30-Day Fills
standardized to 30-day supplies
156
Days of Medication
total across all patients in 2023
No medications match the current filters.
More than typical Typical Less than typical= prescription volume vs the average TN prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the TN average cost per fill.

About this data. The prescription history for DR. BARRY A WINSTON OD is compiled from the Centers for Medicare & Medicaid Services (CMS) Medicare Part D Prescriber Public Use File for calendar year 2023, the most recent federal release. Figures cover prescriptions filled for Medicare Part D beneficiaries only; prescriptions under private insurance, Medicaid, or self-pay plans are not included. Because prescribing decisions are generally consistent across coverage types, this record offers a useful view of the overall Ophthalmology prescribing approach at this Knoxville, TN practice.

Reading the costs. Drug costs are gross amounts paid to pharmacies under Part D, including both plan and beneficiary payments. They are not the price a patient pays at the pharmacy counter. Medications with fewer than 11 claims are excluded from the federal source data, and state comparisons use the average volume among TN prescribers of the same medication. Always confirm current medications and costs directly with the provider and your plan.