Healthcare provider profile · identity verified

Erin Matthew O'Tool, MD

Allopathic & Osteopathic Physicians|Family Medicine · OAK CREEK, WI · NPI 1104050954

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 Erin Matthew O'Tool, MD received $36.82 in general payments during 2025 across 2 reported records.

Exact Sciences Corporation accounted for 51.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 2 associated products.

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

Payment overview · 2025

General Payments

$36.82

2 reported records · 2 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 $18.9051.3%12025
Cranial Technologies, Inc Unresolved — no canonical attribution shown $17.9248.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$36.822

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 $18.90 1 2025
Source payment records
Doc Band
Normalized: doc band
Device Cranial Technologies, Inc $17.92 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 Calcium610169
LisinoprilLisinopril33190
Levothyroxine SodiumLevothyroxine Sodium22250
Losartan PotassiumLosartan Potassium21361
Amlodipine BesylateAmlodipine Besylate20552
Metformin HclMetformin Hcl17852
GabapentinGabapentin16443
OmeprazoleOmeprazole16047
HydrochlorothiazideHydrochlorothiazide15548
Trazodone HclTrazodone Hcl13432
Rosuvastatin CalciumRosuvastatin Calcium12939
SimvastatinSimvastatin12837
Sertraline HclSertraline Hcl12334
Metoprolol SuccinateMetoprolol Succinate11636
Pantoprazole SodiumPantoprazole Sodium10729
Metoprolol TartrateMetoprolol Tartrate10025
JardianceEmpagliflozin8621
Tamsulosin HclTamsulosin Hcl8622
Albuterol Sulfate HfaAlbuterol Sulfate8020
CelecoxibCelecoxib7826
OzempicSemaglutide7516
AllopurinolAllopurinol7317
EliquisApixaban71suppressed
Tramadol HclTramadol Hcl7118
FurosemideFurosemide7023
Potassium ChloridePotassium Chloride6816
Metformin Hcl ErMetformin Hcl6512
ClopidogrelClopidogrel Bisulfate6017
Pravastatin SodiumPravastatin Sodium5820
Escitalopram OxalateEscitalopram Oxalate5311
Fluticasone PropionateFluticasone Propionate4815
Bupropion XlBupropion Hcl47suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog4613
MounjaroTirzepatide43suppressed
FamotidineFamotidine42suppressed
JanuviaSitagliptin Phosphate4212
CarvedilolCarvedilol4012
BaclofenBaclofen3913
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide3912
Zolpidem TartrateZolpidem Tartrate37suppressed
Alendronate SodiumAlendronate Sodium34suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl34suppressed
MyrbetriqMirabegron34suppressed
AtenololAtenolol32suppressed
ClonazepamClonazepam31suppressed
Diclofenac SodiumDiclofenac Sodium2812
Sumatriptan SuccinateSumatriptan Succinate28suppressed
TestosteroneTestosterone26suppressed
Citalopram HbrCitalopram Hydrobromide25suppressed
Montelukast SodiumMontelukast Sodium25suppressed
Venlafaxine Hcl ErVenlafaxine Hcl25suppressed
Duloxetine HclDuloxetine Hcl24suppressed
MeloxicamMeloxicam24suppressed
Fluoxetine HclFluoxetine Hcl23suppressed
MirtazapineMirtazapine23suppressed
FinasterideFinasteride22suppressed
Glipizide ErGlipizide22suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen22suppressed
Ropinirole HclRopinirole Hcl22suppressed
Benazepril HclBenazepril Hcl21suppressed
Buspirone HclBuspirone Hcl21suppressed
EzetimibeEzetimibe21suppressed
Breo ElliptaFluticasone/Vilanterol20suppressed
Doxazosin MesylateDoxazosin Mesylate20suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium20suppressed
Humalog Kwikpen U-100Insulin Lispro20suppressed
LinzessLinaclotide20suppressed
TradjentaLinagliptin20suppressed
Bupropion HclBupropion Hcl19suppressed
AcyclovirAcyclovir18suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr18suppressed
Donepezil HclDonepezil Hcl18suppressed
Boostrix TdapDiphth,pertuss(Acell),tet Vac1717
ShingrixVaricella-Zoster Ge/As01b/Pf1715
Advair HfaFluticasone Propion/Salmeterol16suppressed
Amitriptyline HclAmitriptyline Hcl16suppressed
PrednisonePrednisone16suppressed
SpironolactoneSpironolactone16suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid16suppressed
VascepaIcosapent Ethyl16suppressed
AmoxicillinAmoxicillin15suppressed
Terazosin HclTerazosin Hcl15suppressed
AbrysvoRsv Vacc, Pref A And Pref B/Pf1414
Bupropion Hcl SrBupropion Hcl14suppressed
EntacaponeEntacapone14suppressed
GlipizideGlipizide14suppressed
Pioglitazone HclPioglitazone Hcl14suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol13suppressed
LorazepamLorazepam13suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide13suppressed
LovastatinLovastatin13suppressed
NystatinNystatin13suppressed
RisperidoneRisperidone13suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril12suppressed
Paroxetine HclParoxetine Hcl12suppressed
Propranolol HclPropranolol Hcl12suppressed
TopiramateTopiramate12suppressed
TorsemideTorsemide12suppressed
AlprazolamAlprazolam11suppressed
CalcitriolCalcitriol11suppressed
CephalexinCephalexin11suppressed
GlimepirideGlimepiride11suppressed
Hydralazine HclHydralazine Hcl11suppressed
Olmesartan MedoxomilOlmesartan Medoxomil11suppressed
Ondansetron HclOndansetron Hcl11suppressed
Quetiapine FumarateQuetiapine Fumarate11suppressed
Semglee (Yfgn) PenInsulin Glargine-Yfgn11suppressed
Sildenafil CitrateSildenafil Citrate11suppressed
Spiriva HandihalerTiotropium Bromide11suppressed
Tizanidine HclTizanidine Hcl11suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter11suppressed

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 $36.82 · 2 records Exact Sciences Corporation Cologuard Collection Kit, Doc Band
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