Healthcare provider profile · identity verified

Christopher J Tookey, MD

Family Practice · SPARTA, WI · NPI 1912439639

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 Calcium467108
OmeprazoleOmeprazole22850
Metoprolol SuccinateMetoprolol Succinate17044
Amlodipine BesylateAmlodipine Besylate16740
GabapentinGabapentin14721
Tamsulosin HclTamsulosin Hcl14334
LisinoprilLisinopril14141
Levothyroxine SodiumLevothyroxine Sodium12528
TrulicityDulaglutide12420
Metformin Hcl ErMetformin Hcl10925
Metformin HclMetformin Hcl10321
TorsemideTorsemide9929
EliquisApixaban9818
Pantoprazole SodiumPantoprazole Sodium9618
Fluticasone PropionateFluticasone Propionate9232
Potassium ChloridePotassium Chloride9013
Losartan PotassiumLosartan Potassium8922
Warfarin SodiumWarfarin Sodium8912
Albuterol Sulfate HfaAlbuterol Sulfate8631
Duloxetine HclDuloxetine Hcl8612
FurosemideFurosemide8525
Rosuvastatin CalciumRosuvastatin Calcium8520
ValsartanValsartan8420
CarvedilolCarvedilol7815
Sertraline HclSertraline Hcl7512
FarxigaDapagliflozin Propanediol7416
Cyclobenzaprine HclCyclobenzaprine Hcl6915
Metoprolol TartrateMetoprolol Tartrate6115
Fluticasone-SalmeterolFluticasone Propion/Salmeterol5714
SimvastatinSimvastatin5614
Olmesartan MedoxomilOlmesartan Medoxomil52suppressed
AllopurinolAllopurinol5116
Oxycodone HclOxycodone Hcl5012
Trazodone HclTrazodone Hcl4912
JardianceEmpagliflozin48suppressed
PrednisonePrednisone4717
FinasterideFinasteride4611
Pravastatin SodiumPravastatin Sodium4613
Bupropion XlBupropion Hcl4412
Tizanidine HclTizanidine Hcl43suppressed
Montelukast SodiumMontelukast Sodium42suppressed
Quetiapine FumarateQuetiapine Fumarate38suppressed
LamotrigineLamotrigine37suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide36suppressed
OzempicSemaglutide35suppressed
PregabalinPregabalin33suppressed
TopiramateTopiramate33suppressed
ClopidogrelClopidogrel Bisulfate31suppressed
Doxazosin MesylateDoxazosin Mesylate31suppressed
Carbamazepine ErCarbamazepine30suppressed
NitroglycerinNitroglycerin3019
Tramadol HclTramadol Hcl30suppressed
Doxycycline MonohydrateDoxycycline Monohydrate2924
Venlafaxine Hcl ErVenlafaxine Hcl28suppressed
FamotidineFamotidine27suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl26suppressed
RytaryCarbidopa/Levodopa26suppressed
Insulin Glargine-YfgnInsulin Glargine-Yfgn25suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2520
XareltoRivaroxaban25suppressed
MirtazapineMirtazapine24suppressed
AtenololAtenolol23suppressed
Dicyclomine HclDicyclomine Hcl23suppressed
FenofibrateFenofibrate22suppressed
Ondansetron OdtOndansetron22suppressed
SpironolactoneSpironolactone2212
KetoconazoleKetoconazole20suppressed
Paroxetine HclParoxetine Hcl20suppressed
AmoxicillinAmoxicillin19suppressed
Breo ElliptaFluticasone/Vilanterol19suppressed
HydrochlorothiazideHydrochlorothiazide19suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen18suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic18suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid18suppressed
Bydureon BciseExenatide Microspheres17suppressed
Doxepin HclDoxepin Hcl17suppressed
Incruse ElliptaUmeclidinium Bromide17suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog17suppressed
LinzessLinaclotide17suppressed
SucralfateSucralfate17suppressed
Fluoxetine HclFluoxetine Hcl16suppressed
Diclofenac SodiumDiclofenac Sodium15suppressed
LorazepamLorazepam15suppressed
LoperamideLoperamide Hcl14suppressed
Memantine Hcl ErMemantine Hcl14suppressed
NabumetoneNabumetone14suppressed
Nortriptyline HclNortriptyline Hcl14suppressed
PhenobarbitalPhenobarbital14suppressed
RisperidoneRisperidone14suppressed
Advair HfaFluticasone Propion/Salmeterol13suppressed
AzithromycinAzithromycin1311
Carbidopa-Levodopa ErCarbidopa/Levodopa13suppressed
Divalproex Sodium ErDivalproex Sodium13suppressed
Escitalopram OxalateEscitalopram Oxalate13suppressed
HaloperidolHaloperidol13suppressed
MetolazoneMetolazone13suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen13suppressed
Phenytoin Sodium ExtendedPhenytoin Sodium Extended13suppressed
Xtampza ErOxycodone Myristate13suppressed
Amlodipine-ValsartanAmlodipine Besylate/Valsartan12suppressed
BumetanideBumetanide12suppressed
Buspirone HclBuspirone Hcl12suppressed
Clonidine HclClonidine Hcl12suppressed
Hydroxyzine HclHydroxyzine Hcl12suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate12suppressed
Methylphenidate Er (La)Methylphenidate Hcl12suppressed
Propranolol Hcl ErPropranolol Hcl12suppressed
RivastigmineRivastigmine12suppressed
Spiriva HandihalerTiotropium Bromide12suppressed
Terazosin HclTerazosin Hcl12suppressed
Zolpidem TartrateZolpidem Tartrate12suppressed
Citalopram HbrCitalopram Hydrobromide11suppressed
Diltiazem 12hr ErDiltiazem Hcl11suppressed
EntrestoSacubitril/Valsartan11suppressed
EzetimibeEzetimibe11suppressed
GlipizideGlipizide11suppressed
Hydralazine HclHydralazine Hcl11suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride11suppressed
MethocarbamolMethocarbamol11suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst11suppressed
Ropinirole HclRopinirole 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