Healthcare provider profile · identity verified

Gregory J Matthews, MD

Allopathic & Osteopathic Physicians|Family Medicine · BROWN DEER, WI · NPI 1770524746

Profile state: payments and partd 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

CMS Open Payments records show Gregory J Matthews, MD received $28.09 in general payments during 2025 across 1 reported records.

Exact Sciences Corporation accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 1 associated product.

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

Payment overview · 2025

General Payments

$28.09

1 reported records · 1 companies

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.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
Exact Sciences Corporation Unresolved — no canonical attribution shown $28.09100.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$28.091

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $28.09 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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.

None of this doctor’s payer companies has same-entity product evidence that passes the publication threshold. The site does not infer company ownership, affiliates, or generic manufacturers.

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 Calcium445107
LisinoprilLisinopril32479
Levothyroxine SodiumLevothyroxine Sodium30877
Amlodipine BesylateAmlodipine Besylate29686
Losartan PotassiumLosartan Potassium29169
Pantoprazole SodiumPantoprazole Sodium19551
Metformin HclMetformin Hcl17948
Metoprolol SuccinateMetoprolol Succinate17945
HydrochlorothiazideHydrochlorothiazide17350
Tamsulosin HclTamsulosin Hcl15538
OmeprazoleOmeprazole14631
Pravastatin SodiumPravastatin Sodium14138
FurosemideFurosemide13627
EliquisApixaban12826
Tramadol HclTramadol Hcl10622
GabapentinGabapentin10029
Albuterol Sulfate HfaAlbuterol Sulfate8917
Trazodone HclTrazodone Hcl8123
Sertraline HclSertraline Hcl8018
Metoprolol TartrateMetoprolol Tartrate7517
Rosuvastatin CalciumRosuvastatin Calcium7516
GlimepirideGlimepiride6519
AllopurinolAllopurinol6117
Metformin Hcl ErMetformin Hcl6019
CarvedilolCarvedilol5916
MeloxicamMeloxicam5819
SimvastatinSimvastatin5514
Potassium ChloridePotassium Chloride5315
JardianceEmpagliflozin4911
Duloxetine HclDuloxetine Hcl46suppressed
NaproxenNaproxen4619
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid45suppressed
Montelukast SodiumMontelukast Sodium43suppressed
AlprazolamAlprazolam4211
AmoxicillinAmoxicillin4133
ChlorthalidoneChlorthalidone4111
Lantus SolostarInsulin Glargine,hum.Rec.Anlog39suppressed
FinasterideFinasteride37suppressed
Bupropion XlBupropion Hcl36suppressed
EzetimibeEzetimibe36suppressed
Hydralazine HclHydralazine Hcl35suppressed
Tizanidine HclTizanidine Hcl35suppressed
Doxazosin MesylateDoxazosin Mesylate33suppressed
SpironolactoneSpironolactone33suppressed
Citalopram HbrCitalopram Hydrobromide3211
Donepezil HclDonepezil Hcl32suppressed
AzithromycinAzithromycin3130
Warfarin SodiumWarfarin Sodium31suppressed
Buspirone HclBuspirone Hcl30suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium30suppressed
CelecoxibCelecoxib27suppressed
Fluoxetine HclFluoxetine Hcl27suppressed
HydrocortisoneHydrocortisone2718
Ibandronate SodiumIbandronate Sodium27suppressed
FamotidineFamotidine26suppressed
LevetiracetamLevetiracetam26suppressed
SynthroidLevothyroxine Sodium26suppressed
FenofibrateFenofibrate25suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl24suppressed
Alfuzosin Hcl ErAlfuzosin Hcl23suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl23suppressed
Glipizide ErGlipizide23suppressed
Olmesartan MedoxomilOlmesartan Medoxomil23suppressed
OzempicSemaglutide23suppressed
Zolpidem TartrateZolpidem Tartrate23suppressed
ClopidogrelClopidogrel Bisulfate22suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol22suppressed
Lamotrigine ErLamotrigine22suppressed
TemazepamTemazepam22suppressed
Pioglitazone HclPioglitazone Hcl21suppressed
DutasterideDutasteride20suppressed
XareltoRivaroxaban20suppressed
Fluticasone PropionateFluticasone Propionate19suppressed
Acetaminophen-CodeineAcetaminophen With Codeine18suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide18suppressed
MethylprednisoloneMethylprednisolone1817
Terazosin HclTerazosin Hcl18suppressed
Doxycycline MonohydrateDoxycycline Monohydrate1711
Nifedipine ErNifedipine17suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1716
OxaprozinOxaprozin17suppressed
Solifenacin SuccinateSolifenacin Succinate17suppressed
Butorphanol TartrateButorphanol Tartrate16suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen16suppressed
Ondansetron HclOndansetron Hcl16suppressed
Autoshield Duo Pen NeedlePen Needle,dual Safety,diabetc15suppressed
LovastatinLovastatin15suppressed
Meclizine HclMeclizine Hcl15suppressed
Amitriptyline HclAmitriptyline Hcl14suppressed
AripiprazoleAripiprazole14suppressed
Bisoprolol-HydrochlorothiazideBisoprolol/Hydrochlorothiazide14suppressed
CilostazolCilostazol14suppressed
Desmopressin AcetateDesmopressin Acetate14suppressed
Novolog FlexpenInsulin Aspart14suppressed
Oxybutynin ChlorideOxybutynin Chloride14suppressed
Sumatriptan SuccinateSumatriptan Succinate14suppressed
TopiramateTopiramate14suppressed
Advair HfaFluticasone Propion/Salmeterol13suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr13suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate13suppressed
Escitalopram OxalateEscitalopram Oxalate13suppressed
IndapamideIndapamide13suppressed
MyrbetriqMirabegron13suppressed
Tolterodine Tartrate ErTolterodine Tartrate13suppressed
Carbidopa-LevodopaCarbidopa/Levodopa12suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine12suppressed
FenofibrateFenofibrate Nanocrystallized12suppressed
JanuviaSitagliptin Phosphate12suppressed
MethocarbamolMethocarbamol12suppressed
NitroglycerinNitroglycerin12suppressed
PrimidonePrimidone12suppressed
Triamcinolone AcetonideTriamcinolone Acetonide12suppressed
Carbamazepine ErCarbamazepine11suppressed
ClonazepamClonazepam11suppressed
Diltiazem 24hr Er (La)Diltiazem Hcl11suppressed
EstradiolEstradiol11suppressed
Hydroxyzine HclHydroxyzine Hcl11suppressed
Memantine HclMemantine Hcl11suppressed
PaxlovidNirmatrelvir/Ritonavir1111
PrednisonePrednisone11suppressed
SilodosinSilodosin11suppressed

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 $28.09 · 1 records Exact Sciences Corporation Cologuard Collection Kit
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