Healthcare provider profile · identity verified

Robert William Macek, M.D.

Family Practice · WILLIAMSVILLE, NY · NPI 1306231329

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 Calcium26568
LisinoprilLisinopril15658
Buprenorphine-NaloxoneBuprenorphine Hcl/Naloxone Hcl14525
Levothyroxine SodiumLevothyroxine Sodium12232
Rosuvastatin CalciumRosuvastatin Calcium12131
Metformin HclMetformin Hcl10927
Amlodipine BesylateAmlodipine Besylate9529
Metoprolol SuccinateMetoprolol Succinate8321
Albuterol Sulfate HfaAlbuterol Sulfate6825
HydrochlorothiazideHydrochlorothiazide6521
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen6512
Fluticasone PropionateFluticasone Propionate6430
OmeprazoleOmeprazole5918
SuboxoneBuprenorphine Hcl/Naloxone Hcl52suppressed
Pravastatin SodiumPravastatin Sodium4911
Escitalopram OxalateEscitalopram Oxalate4713
FurosemideFurosemide4712
Lantus SolostarInsulin Glargine,hum.Rec.Anlog4712
AlprazolamAlprazolam4613
Pantoprazole SodiumPantoprazole Sodium4615
GabapentinGabapentin4513
Alendronate SodiumAlendronate Sodium4112
TrulicityDulaglutide40suppressed
FamotidineFamotidine3911
AllopurinolAllopurinol35suppressed
Tamsulosin HclTamsulosin Hcl3414
LantusInsulin Glargine,hum.Rec.Anlog33suppressed
Losartan PotassiumLosartan Potassium3313
SimvastatinSimvastatin33suppressed
ClopidogrelClopidogrel Bisulfate32suppressed
Trazodone HclTrazodone Hcl31suppressed
Buprenorphine HclBuprenorphine Hcl30suppressed
MeloxicamMeloxicam28suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl27suppressed
Diclofenac SodiumDiclofenac Sodium27suppressed
Pioglitazone HclPioglitazone Hcl26suppressed
EliquisApixaban25suppressed
IrbesartanIrbesartan25suppressed
OzempicSemaglutide25suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol23suppressed
Metoprolol TartrateMetoprolol Tartrate23suppressed
Zolpidem TartrateZolpidem Tartrate23suppressed
ZubsolvBuprenorphine Hcl/Naloxone Hcl23suppressed
EzetimibeEzetimibe22suppressed
Nifedipine ErNifedipine19suppressed
Potassium ChloridePotassium Chloride19suppressed
Ventolin HfaAlbuterol Sulfate19suppressed
SynthroidLevothyroxine Sodium18suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1714
Duloxetine HclDuloxetine Hcl17suppressed
Ondansetron HclOndansetron Hcl17suppressed
PregabalinPregabalin17suppressed
AtenololAtenolol16suppressed
AzithromycinAzithromycin1615
Citalopram HbrCitalopram Hydrobromide16suppressed
Divalproex Sodium ErDivalproex Sodium16suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen16suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl16suppressed
Tramadol HclTramadol Hcl16suppressed
ValsartanValsartan16suppressed
Clonidine HclClonidine Hcl15suppressed
Hydroxyzine HclHydroxyzine Hcl15suppressed
LidocaineLidocaine15suppressed
Dupixent PenDupilumab14suppressed
JardianceEmpagliflozin14suppressed
BicalutamideBicalutamide13suppressed
Breo ElliptaFluticasone/Vilanterol13suppressed
Glipizide ErGlipizide13suppressed
PrednisonePrednisone1311
Buspirone HclBuspirone Hcl12suppressed
FenofibrateFenofibrate Nanocrystallized12suppressed
LovastatinLovastatin12suppressed
Metformin Hcl ErMetformin Hcl12suppressed
Montelukast SodiumMontelukast Sodium12suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide12suppressed
RybelsusSemaglutide12suppressed
Triamcinolone AcetonideTriamcinolone Acetonide12suppressed
Fosinopril-HydrochlorothiazideFosinopril/Hydrochlorothiazide11suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic11suppressed
Single Use SwabAlcohol Antiseptic Pads11suppressed
Tolterodine TartrateTolterodine Tartrate11suppressed

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