Healthcare provider profile · identity verified

Christopher Thomas Roberts, MD

Internal Medicine · EAU CLAIRE, WI · NPI 1427028299

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 Calcium681199
Amlodipine BesylateAmlodipine Besylate436126
Metoprolol SuccinateMetoprolol Succinate424136
Losartan PotassiumLosartan Potassium398120
Levothyroxine SodiumLevothyroxine Sodium37595
SimvastatinSimvastatin31387
LisinoprilLisinopril311104
OmeprazoleOmeprazole27182
Pantoprazole SodiumPantoprazole Sodium26776
Sertraline HclSertraline Hcl26455
Tamsulosin HclTamsulosin Hcl21963
Rosuvastatin CalciumRosuvastatin Calcium21366
HydrochlorothiazideHydrochlorothiazide19970
Metoprolol TartrateMetoprolol Tartrate19757
FurosemideFurosemide18258
Potassium ChloridePotassium Chloride18244
Tramadol HclTramadol Hcl17638
Metformin Hcl ErMetformin Hcl17564
GabapentinGabapentin16450
EliquisApixaban15637
Trazodone HclTrazodone Hcl14840
Metformin HclMetformin Hcl14740
Warfarin SodiumWarfarin Sodium13337
AllopurinolAllopurinol12739
TrulicityDulaglutide11121
ClopidogrelClopidogrel Bisulfate11029
AlprazolamAlprazolam10330
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid9429
JardianceEmpagliflozin9227
AtenololAtenolol9126
OzempicSemaglutide8115
Terazosin HclTerazosin Hcl7922
Glipizide ErGlipizide7820
Pravastatin SodiumPravastatin Sodium7520
Cyclobenzaprine HclCyclobenzaprine Hcl7216
EzetimibeEzetimibe7119
Isosorbide Mononitrate ErIsosorbide Mononitrate7117
Fluticasone PropionateFluticasone Propionate6929
Nifedipine ErNifedipine6916
GlimepirideGlimepiride6620
FamotidineFamotidine6419
MeloxicamMeloxicam6121
Buspirone HclBuspirone Hcl60suppressed
Hydralazine HclHydralazine Hcl5916
Lantus SolostarInsulin Glargine,hum.Rec.Anlog5919
SpironolactoneSpironolactone5617
FinasterideFinasteride4813
XareltoRivaroxaban4714
CarvedilolCarvedilol4514
LorazepamLorazepam4413
MirtazapineMirtazapine4417
Albuterol Sulfate HfaAlbuterol Sulfate4322
Triamcinolone AcetonideTriamcinolone Acetonide4324
GlipizideGlipizide4215
Zolpidem TartrateZolpidem Tartrate42suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen4117
PrednisonePrednisone4018
LovastatinLovastatin3812
Repatha SureclickEvolocumab38suppressed
Donepezil HclDonepezil Hcl37suppressed
Duloxetine HclDuloxetine Hcl3711
EplerenoneEplerenone36suppressed
NitroglycerinNitroglycerin3522
ChlorthalidoneChlorthalidone3211
Ipratropium BromideIpratropium Bromide31suppressed
SynthroidLevothyroxine Sodium31suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl30suppressed
Fluoxetine HclFluoxetine Hcl28suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl28suppressed
Venlafaxine Hcl ErVenlafaxine Hcl28suppressed
Montelukast SodiumMontelukast Sodium27suppressed
Oxycodone HclOxycodone Hcl2711
Humalog Kwikpen U-100Insulin Lispro26suppressed
ClonazepamClonazepam23suppressed
Paroxetine HclParoxetine Hcl23suppressed
TorsemideTorsemide22suppressed
Alendronate SodiumAlendronate Sodium21suppressed
Azelastine HclAzelastine Hcl21suppressed
Bupropion Hcl SrBupropion Hcl21suppressed
ColchicineColchicine2112
NitrofurantoinNitrofurantoin Macrocrystal21suppressed
Doxycycline HyclateDoxycycline Hyclate2018
Midodrine HclMidodrine Hcl20suppressed
Dicyclomine HclDicyclomine Hcl19suppressed
IbuprofenIbuprofen19suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol18suppressed
ValacyclovirValacyclovir Hcl1812
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine17suppressed
Diclofenac SodiumDiclofenac Sodium17suppressed
Escitalopram OxalateEscitalopram Oxalate17suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide17suppressed
Oxybutynin Chloride ErOxybutynin Chloride17suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter17suppressed
KetoconazoleKetoconazole1612
RybelsusSemaglutide16suppressed
CephalexinCephalexin1511
FenofibrateFenofibrate,micronized15suppressed
Quetiapine FumarateQuetiapine Fumarate15suppressed
ValsartanValsartan15suppressed
AmoxicillinAmoxicillin14suppressed
Fludrocortisone AcetateFludrocortisone Acetate14suppressed
LatanoprostLatanoprost14suppressed
PregabalinPregabalin14suppressed
Cefpodoxime ProxetilCefpodoxime Proxetil13suppressed
LevetiracetamLevetiracetam13suppressed
LoperamideLoperamide Hcl13suppressed
Propranolol HclPropranolol Hcl13suppressed
RisperidoneRisperidone13suppressed
Verapamil ErVerapamil Hcl13suppressed
CelecoxibCelecoxib12suppressed
Fiasp FlextouchInsulin Aspart (Niacinamide)12suppressed
MounjaroTirzepatide12suppressed
RamiprilRamipril12suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav11suppressed
AzithromycinAzithromycin11suppressed
Diltiazem 24hr ErDiltiazem Hcl11suppressed
FarxigaDapagliflozin Propanediol11suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen11suppressed

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