Healthcare provider profile · identity verified

Tonya L Gray, MD

Family Practice · MASON CITY, IA · NPI 1427164201

Profile state: partd only Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

We did not find matching Open Payments records for this doctor in 2025.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

Public prescribing for products named in payments

There is no explicit payment-product set available for a Part D comparison.

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

There is no payer-company set available for this comparison.

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

BrandGenericClaimsBeneficiaries
Atorvastatin CalciumAtorvastatin Calcium34690
Losartan PotassiumLosartan Potassium20252
Levothyroxine SodiumLevothyroxine Sodium17941
OmeprazoleOmeprazole14340
LisinoprilLisinopril13637
HydrochlorothiazideHydrochlorothiazide11833
Amlodipine BesylateAmlodipine Besylate11234
Rosuvastatin CalciumRosuvastatin Calcium10126
Metoprolol SuccinateMetoprolol Succinate9626
Benazepril HclBenazepril Hcl6716
FamotidineFamotidine6619
Metformin Hcl ErMetformin Hcl6116
SimvastatinSimvastatin5918
Albuterol Sulfate HfaAlbuterol Sulfate5725
OzempicSemaglutide57suppressed
Alendronate SodiumAlendronate Sodium5217
Fluoxetine HclFluoxetine Hcl5113
Trazodone HclTrazodone Hcl5013
GabapentinGabapentin4911
Pantoprazole SodiumPantoprazole Sodium4512
Fluticasone PropionateFluticasone Propionate4414
ArexvyRsvpref3 Antigen/As01e/Pf3939
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen39suppressed
Bupropion XlBupropion Hcl38suppressed
Escitalopram OxalateEscitalopram Oxalate3811
EstradiolEstradiol3822
FurosemideFurosemide37suppressed
ClonazepamClonazepam34suppressed
SpironolactoneSpironolactone3412
Pravastatin SodiumPravastatin Sodium32suppressed
Duloxetine HclDuloxetine Hcl31suppressed
ShingrixVaricella-Zoster Ge/As01b/Pf3124
Potassium ChloridePotassium Chloride28suppressed
Metformin HclMetformin Hcl27suppressed
Tramadol HclTramadol Hcl27suppressed
Metoprolol TartrateMetoprolol Tartrate26suppressed
Amitriptyline HclAmitriptyline Hcl25suppressed
CarvedilolCarvedilol25suppressed
ValacyclovirValacyclovir Hcl2513
Boostrix TdapDiphth,pertuss(Acell),tet Vac2424
Cyclobenzaprine HclCyclobenzaprine Hcl24suppressed
Warfarin SodiumWarfarin Sodium23suppressed
AtenololAtenolol20suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid20suppressed
Buspirone HclBuspirone Hcl19suppressed
Oxybutynin Chloride ErOxybutynin Chloride19suppressed
Sertraline HclSertraline Hcl19suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr18suppressed
Arnuity ElliptaFluticasone Furoate18suppressed
Enalapril MaleateEnalapril Maleate18suppressed
JardianceEmpagliflozin17suppressed
Montelukast SodiumMontelukast Sodium17suppressed
Citalopram HbrCitalopram Hydrobromide16suppressed
Tresiba Flextouch U-200Insulin Degludec16suppressed
Venlafaxine Hcl ErVenlafaxine Hcl16suppressed
AllopurinolAllopurinol15suppressed
PrednisonePrednisone1513
Sumatriptan SuccinateSumatriptan Succinate15suppressed
Tamsulosin HclTamsulosin Hcl15suppressed
ClopidogrelClopidogrel Bisulfate14suppressed
MounjaroTirzepatide14suppressed
Peg 3350-ElectrolyteSodium Chloride/Nahco3/Kcl/Peg1414
EliquisApixaban12suppressed
Incruse ElliptaUmeclidinium Bromide12suppressed
Ventolin HfaAlbuterol Sulfate12suppressed
AzithromycinAzithromycin1111
ChlorthalidoneChlorthalidone11suppressed
Ciprofloxacin HclCiprofloxacin Hcl1111
Paroxetine HclParoxetine Hcl11suppressed
Propranolol Hcl ErPropranolol Hcl11suppressed
Solifenacin SuccinateSolifenacin Succinate11suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
CMS Open Payments — General Payments 2025 2026-06-30 Original source
Medicare Part D Prescribers by Provider and Drug 2024 2026-05-06 Original source
NPPES Data Dissemination V2 current / reference data 2026-08-10 Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error