Healthcare provider profile · identity verified

Brett A Barkimer, M.D.

Internal Medicine · MENOMONEE FALLS, WI · NPI 1255540134

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 Calcium432134
Amlodipine BesylateAmlodipine Besylate23770
LisinoprilLisinopril18257
Losartan PotassiumLosartan Potassium17852
Metformin Hcl ErMetformin Hcl14737
Levothyroxine SodiumLevothyroxine Sodium14243
OmeprazoleOmeprazole13839
GabapentinGabapentin11434
Rosuvastatin CalciumRosuvastatin Calcium10934
Tamsulosin HclTamsulosin Hcl10732
Pantoprazole SodiumPantoprazole Sodium10529
SimvastatinSimvastatin9727
HydrochlorothiazideHydrochlorothiazide9525
Metoprolol SuccinateMetoprolol Succinate9330
Metformin HclMetformin Hcl9226
Sertraline HclSertraline Hcl7521
Trazodone HclTrazodone Hcl7521
Metoprolol TartrateMetoprolol Tartrate7021
Oxycodone HclOxycodone Hcl7012
Duloxetine HclDuloxetine Hcl6717
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide6419
FurosemideFurosemide6323
TrulicityDulaglutide6211
Pravastatin SodiumPravastatin Sodium5819
Cyclobenzaprine HclCyclobenzaprine Hcl5021
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide5013
Albuterol Sulfate HfaAlbuterol Sulfate4722
MounjaroTirzepatide47suppressed
AllopurinolAllopurinol4314
Escitalopram OxalateEscitalopram Oxalate42suppressed
Warfarin SodiumWarfarin Sodium41suppressed
Fluticasone PropionateFluticasone Propionate4016
PregabalinPregabalin3920
Tramadol HclTramadol Hcl38suppressed
AlprazolamAlprazolam36suppressed
ClopidogrelClopidogrel Bisulfate35suppressed
EzetimibeEzetimibe35suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog3516
OzempicSemaglutide3311
GlimepirideGlimepiride31suppressed
JardianceEmpagliflozin30suppressed
Tizanidine HclTizanidine Hcl30suppressed
FamotidineFamotidine29suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2812
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen27suppressed
FinasterideFinasteride26suppressed
DiazepamDiazepam25suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic24suppressed
BaclofenBaclofen23suppressed
PrednisonePrednisone2314
Alendronate SodiumAlendronate Sodium22suppressed
Montelukast SodiumMontelukast Sodium22suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide22suppressed
Zolpidem TartrateZolpidem Tartrate22suppressed
Diclofenac SodiumDiclofenac Sodium21suppressed
Easy Touch Alcohol Prep PadsAlcohol Antiseptic Pads20suppressed
SpironolactoneSpironolactone20suppressed
Clonidine HclClonidine Hcl19suppressed
Combivent RespimatIpratropium/Albuterol Sulfate19suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine19suppressed
Paroxetine HclParoxetine Hcl19suppressed
CelecoxibCelecoxib18suppressed
Humalog Kwikpen U-100Insulin Lispro18suppressed
LorazepamLorazepam18suppressed
MirtazapineMirtazapine18suppressed
ValacyclovirValacyclovir Hcl18suppressed
Hydralazine HclHydralazine Hcl17suppressed
Potassium ChloridePotassium Chloride17suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid17suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl16suppressed
EliquisApixaban16suppressed
GlipizideGlipizide16suppressed
Ondansetron OdtOndansetron16suppressed
Amitriptyline HclAmitriptyline Hcl15suppressed
Bupropion XlBupropion Hcl15suppressed
Glipizide ErGlipizide15suppressed
MeloxicamMeloxicam15suppressed
XareltoRivaroxaban15suppressed
Clobetasol PropionateClobetasol Propionate14suppressed
Methylphenidate HclMethylphenidate Hcl14suppressed
AcyclovirAcyclovir13suppressed
ChlorthalidoneChlorthalidone12suppressed
FenofibrateFenofibrate12suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate12suppressed
JanuviaSitagliptin Phosphate12suppressed
Propranolol Hcl ErPropranolol Hcl12suppressed
Doxazosin MesylateDoxazosin Mesylate11suppressed
MethocarbamolMethocarbamol11suppressed

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