Healthcare provider profile · identity verified

Bruce A. Bonsack, MD

Family Practice · SEATTLE, WA · NPI 1225113566

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 Calcium491145
LisinoprilLisinopril30389
Amlodipine BesylateAmlodipine Besylate29690
Levothyroxine SodiumLevothyroxine Sodium21766
Losartan PotassiumLosartan Potassium21761
EliquisApixaban13631
Metoprolol SuccinateMetoprolol Succinate13237
Tamsulosin HclTamsulosin Hcl13145
OmeprazoleOmeprazole12636
Rosuvastatin CalciumRosuvastatin Calcium12641
Metformin HclMetformin Hcl11229
Metformin Hcl ErMetformin Hcl10634
HydrochlorothiazideHydrochlorothiazide10333
AllopurinolAllopurinol9728
GabapentinGabapentin9239
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide8429
Pantoprazole SodiumPantoprazole Sodium7820
SimvastatinSimvastatin7520
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide7422
MirtazapineMirtazapine7121
Sertraline HclSertraline Hcl6816
GlimepirideGlimepiride6618
FinasterideFinasteride6019
Trazodone HclTrazodone Hcl6021
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen5212
FurosemideFurosemide4814
PrednisonePrednisone4722
AlprazolamAlprazolam4613
Potassium ChloridePotassium Chloride4414
Duloxetine HclDuloxetine Hcl41suppressed
Donepezil HclDonepezil Hcl40suppressed
Fluticasone PropionateFluticasone Propionate36suppressed
Escitalopram OxalateEscitalopram Oxalate3514
Montelukast SodiumMontelukast Sodium34suppressed
Solifenacin SuccinateSolifenacin Succinate33suppressed
EzetimibeEzetimibe31suppressed
SpironolactoneSpironolactone3111
Metoprolol TartrateMetoprolol Tartrate30suppressed
Fluoxetine HclFluoxetine Hcl29suppressed
Meclizine HclMeclizine Hcl29suppressed
ClopidogrelClopidogrel Bisulfate28suppressed
JardianceEmpagliflozin28suppressed
Warfarin SodiumWarfarin Sodium28suppressed
CarvedilolCarvedilol25suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog25suppressed
Memantine HclMemantine Hcl25suppressed
Propranolol HclPropranolol Hcl2511
AtenololAtenolol24suppressed
CelecoxibCelecoxib24suppressed
LovastatinLovastatin24suppressed
Terazosin HclTerazosin Hcl24suppressed
Bupropion XlBupropion Hcl23suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2315
Venlafaxine Hcl ErVenlafaxine Hcl23suppressed
Combivent RespimatIpratropium/Albuterol Sulfate22suppressed
Dilt-XrDiltiazem Hcl22suppressed
MeloxicamMeloxicam22suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen20suppressed
Quetiapine FumarateQuetiapine Fumarate20suppressed
TrulicityDulaglutide20suppressed
Glipizide ErGlipizide19suppressed
Albuterol Sulfate HfaAlbuterol Sulfate1811
ChlorthalidoneChlorthalidone18suppressed
Pravastatin SodiumPravastatin Sodium18suppressed
Doxazosin MesylateDoxazosin Mesylate17suppressed
MyrbetriqMirabegron17suppressed
TelmisartanTelmisartan17suppressed
HydrocortisoneHydrocortisone16suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid16suppressed
FluconazoleFluconazole15suppressed
MupirocinMupirocin1513
Oxybutynin Chloride ErOxybutynin Chloride15suppressed
Benazepril HclBenazepril Hcl14suppressed
BumetanideBumetanide14suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl13suppressed
DiazepamDiazepam13suppressed
SynthroidLevothyroxine Sodium13suppressed
Acetaminophen-CodeineAcetaminophen With Codeine12suppressed
Diclofenac SodiumDiclofenac Sodium12suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl12suppressed
FamotidineFamotidine12suppressed
Morphine Sulfate ErMorphine Sulfate12suppressed
OzempicSemaglutide12suppressed
AcyclovirAcyclovir11suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium11suppressed
Klor-Con M20Potassium Chloride11suppressed
ValacyclovirValacyclovir Hcl11suppressed
XareltoRivaroxaban11suppressed

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