Healthcare provider profile · identity verified

Thomas Patrick Warrington, M.D.

Family Practice · PORTLAND, OR · NPI 1740484914

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 Calcium534209
Levothyroxine SodiumLevothyroxine Sodium27288
LisinoprilLisinopril21984
Losartan PotassiumLosartan Potassium16565
Amlodipine BesylateAmlodipine Besylate15771
OmeprazoleOmeprazole15461
Trazodone HclTrazodone Hcl13754
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen12126
Rosuvastatin CalciumRosuvastatin Calcium12043
Metoprolol SuccinateMetoprolol Succinate11644
Tamsulosin HclTamsulosin Hcl8639
GabapentinGabapentin8230
HydrochlorothiazideHydrochlorothiazide7226
Metformin Hcl ErMetformin Hcl7127
EliquisApixaban6826
Alendronate SodiumAlendronate Sodium6123
Metformin HclMetformin Hcl6128
Sertraline HclSertraline Hcl5717
Bupropion XlBupropion Hcl5617
SimvastatinSimvastatin5619
FinasterideFinasteride5326
Pantoprazole SodiumPantoprazole Sodium5223
AlprazolamAlprazolam4814
Duloxetine HclDuloxetine Hcl4818
AllopurinolAllopurinol4719
OzempicSemaglutide4515
JardianceEmpagliflozin4414
Oxycodone HclOxycodone Hcl4311
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide4017
Pravastatin SodiumPravastatin Sodium4019
EzetimibeEzetimibe3913
FurosemideFurosemide3721
Fluticasone PropionateFluticasone Propionate3617
Albuterol Sulfate HfaAlbuterol Sulfate3528
AtenololAtenolol3518
ClopidogrelClopidogrel Bisulfate3516
SpironolactoneSpironolactone3514
CarvedilolCarvedilol3413
FamotidineFamotidine3415
LorazepamLorazepam3413
Escitalopram OxalateEscitalopram Oxalate3315
Potassium ChloridePotassium Chloride3315
Zolpidem TartrateZolpidem Tartrate3318
MirtazapineMirtazapine3211
Olmesartan MedoxomilOlmesartan Medoxomil3111
SynthroidLevothyroxine Sodium3011
TorsemideTorsemide30suppressed
Metoprolol TartrateMetoprolol Tartrate2812
DiazepamDiazepam26suppressed
LovastatinLovastatin26suppressed
Citalopram HbrCitalopram Hydrobromide2513
Cyclobenzaprine HclCyclobenzaprine Hcl25suppressed
Donepezil HclDonepezil Hcl23suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen23suppressed
LevetiracetamLevetiracetam22suppressed
MeloxicamMeloxicam22suppressed
Montelukast SodiumMontelukast Sodium22suppressed
Tizanidine HclTizanidine Hcl22suppressed
XareltoRivaroxaban22suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide21suppressed
PrednisonePrednisone2119
Sumatriptan SuccinateSumatriptan Succinate21suppressed
Warfarin SodiumWarfarin Sodium21suppressed
AcyclovirAcyclovir20suppressed
Ipratropium BromideIpratropium Bromide2014
Lantus SolostarInsulin Glargine,hum.Rec.Anlog20suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog19suppressed
Fluoxetine HclFluoxetine Hcl19suppressed
PregabalinPregabalin19suppressed
Isosorbide DinitrateIsosorbide Dinitrate18suppressed
NystatinNystatin18suppressed
Amitriptyline HclAmitriptyline Hcl16suppressed
Tramadol HclTramadol Hcl16suppressed
Triamcinolone AcetonideTriamcinolone Acetonide16suppressed
Ondansetron OdtOndansetron1511
Oxybutynin Chloride ErOxybutynin Chloride15suppressed
Zolpidem Tartrate ErZolpidem Tartrate15suppressed
Propranolol HclPropranolol Hcl14suppressed
Acetaminophen-CodeineAcetaminophen With Codeine13suppressed
AripiprazoleAripiprazole13suppressed
GlipizideGlipizide13suppressed
MounjaroTirzepatide13suppressed
NitroglycerinNitroglycerin1312
OxycontinOxycodone Hcl13suppressed
RisperidoneRisperidone13suppressed
ValsartanValsartan13suppressed
Quetiapine FumarateQuetiapine Fumarate12suppressed
Terazosin HclTerazosin Hcl12suppressed
Bupropion Hcl SrBupropion Hcl11suppressed
CephalexinCephalexin11suppressed
ClotrimazoleClotrimazole11suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium11suppressed
FluconazoleFluconazole11suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol11suppressed
TrulicityDulaglutide11suppressed
Venlafaxine Hcl ErVenlafaxine Hcl11suppressed

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