Healthcare provider profile · identity verified

Gerald B Mader, MD

Allopathic & Osteopathic Physicians|Family Medicine · WHITELAND, IN · NPI 1922174234

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 Gerald B Mader, MD received $136.09 in general payments during 2025 across 2 reported records.

Amgen Inc. accounted for 89.0% 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

$136.09

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
Amgen Inc. Unresolved — no canonical attribution shown $121.1889.0%12025
Abbott Laboratories Unresolved — no canonical attribution shown $14.9111.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$136.092

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
REPATHA
Normalized: repatha
Biological Amgen Inc. $121.18 1 2025
Source payment records
FREESTYLE LIBRE 3
Normalized: freestyle libre 3
Device Abbott Laboratories $14.91 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.

No publishable same-company prescribing overlap was found in the loaded Part D year. This does not mean the doctor never prescribed a drug reported elsewhere by a paying company.

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
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen25035
Atorvastatin CalciumAtorvastatin Calcium19359
ClonazepamClonazepam17223
OmeprazoleOmeprazole14736
Rosuvastatin CalciumRosuvastatin Calcium13938
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen13023
Amlodipine BesylateAmlodipine Besylate12536
Albuterol Sulfate HfaAlbuterol Sulfate11128
GabapentinGabapentin10729
Levothyroxine SodiumLevothyroxine Sodium10327
Pantoprazole SodiumPantoprazole Sodium8727
LisinoprilLisinopril8124
TelmisartanTelmisartan7824
Trazodone HclTrazodone Hcl7520
LorazepamLorazepam7411
Metformin Hcl ErMetformin Hcl6721
Losartan PotassiumLosartan Potassium6522
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine63suppressed
OzempicSemaglutide6213
MeloxicamMeloxicam6116
Metformin HclMetformin Hcl6017
Sertraline HclSertraline Hcl6014
Zolpidem TartrateZolpidem Tartrate58suppressed
Escitalopram OxalateEscitalopram Oxalate5313
MounjaroTirzepatide5212
Tamsulosin HclTamsulosin Hcl4514
SpironolactoneSpironolactone4418
MirtazapineMirtazapine4317
Tizanidine HclTizanidine Hcl4315
VraylarCariprazine Hcl43suppressed
Alendronate SodiumAlendronate Sodium41suppressed
Doxycycline MonohydrateDoxycycline Monohydrate4136
Buspirone HclBuspirone Hcl4013
Oxycodone HclOxycodone Hcl40suppressed
SimvastatinSimvastatin4011
HydrochlorothiazideHydrochlorothiazide3911
Metoprolol TartrateMetoprolol Tartrate3911
Trelegy ElliptaFluticasone/Umeclidin/Vilanter3911
AllopurinolAllopurinol3812
Duloxetine HclDuloxetine Hcl3612
Metoprolol SuccinateMetoprolol Succinate3612
Tramadol HclTramadol Hcl36suppressed
FurosemideFurosemide3512
CarvedilolCarvedilol34suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl34suppressed
Pioglitazone HclPioglitazone Hcl32suppressed
IrbesartanIrbesartan31suppressed
PregabalinPregabalin31suppressed
Ropinirole HclRopinirole Hcl31suppressed
EzetimibeEzetimibe29suppressed
Paroxetine HclParoxetine Hcl29suppressed
FarxigaDapagliflozin Propanediol28suppressed
AripiprazoleAripiprazole27suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol27suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride27suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide26suppressed
TorsemideTorsemide26suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium25suppressed
Morphine SulfateMorphine Sulfate25suppressed
Morphine Sulfate ErMorphine Sulfate25suppressed
TrintellixVortioxetine Hydrobromide25suppressed
Bupropion Hcl SrBupropion Hcl24suppressed
Montelukast SodiumMontelukast Sodium24suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine23suppressed
Acetaminophen-CodeineAcetaminophen With Codeine21suppressed
Diclofenac SodiumDiclofenac Sodium21suppressed
IbuprofenIbuprofen21suppressed
Irbesartan-HydrochlorothiazideIrbesartan/Hydrochlorothiazide21suppressed
Oxybutynin ChlorideOxybutynin Chloride21suppressed
Fluoxetine HclFluoxetine Hcl20suppressed
Pravastatin SodiumPravastatin Sodium20suppressed
SynthroidLevothyroxine Sodium20suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide20suppressed
FentanylFentanyl19suppressed
Fluticasone PropionateFluticasone Propionate19suppressed
Ondansetron HclOndansetron Hcl19suppressed
TopiramateTopiramate19suppressed
XareltoRivaroxaban19suppressed
AlprazolamAlprazolam18suppressed
EliquisApixaban18suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog18suppressed
Tresiba Flextouch U-100Insulin Degludec18suppressed
Venlafaxine Hcl ErVenlafaxine Hcl18suppressed
CelecoxibCelecoxib17suppressed
HydrocortisoneHydrocortisone17suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl17suppressed
Amitriptyline HclAmitriptyline Hcl16suppressed
Breztri AerosphereBudesonide/Glycopyr/Formoterol16suppressed
ClopidogrelClopidogrel Bisulfate16suppressed
Nebivolol HclNebivolol Hcl16suppressed
Quetiapine FumarateQuetiapine Fumarate16suppressed
Combivent RespimatIpratropium/Albuterol Sulfate15suppressed
DiazepamDiazepam15suppressed
LinzessLinaclotide15suppressed
PrednisonePrednisone1514
Promethazine HclPromethazine Hcl15suppressed
AcyclovirAcyclovir14suppressed
Amiodarone HclAmiodarone Hcl14suppressed
Breo ElliptaFluticasone/Vilanterol14suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine14suppressed
Hydroxyzine HclHydroxyzine Hcl14suppressed
OlanzapineOlanzapine14suppressed
Olmesartan MedoxomilOlmesartan Medoxomil14suppressed
Testosterone CypionateTestosterone Cypionate14suppressed
AtenololAtenolol13suppressed
AzithromycinAzithromycin13suppressed
ChlorthalidoneChlorthalidone13suppressed
Hydroxyzine PamoateHydroxyzine Pamoate13suppressed
Verapamil HclVerapamil Hcl13suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav12suppressed
JardianceEmpagliflozin12suppressed
LamotrigineLamotrigine12suppressed
Methadone HclMethadone Hcl12suppressed
Ondansetron OdtOndansetron12suppressed
Raloxifene HclRaloxifene Hcl12suppressed
Telmisartan-HydrochlorothiazidTelmisartan/Hydrochlorothiazid12suppressed
Bupropion XlBupropion Hcl11suppressed
EstradiolEstradiol11suppressed
FamotidineFamotidine11suppressed
IvermectinIvermectin11suppressed
Nifedipine ErNifedipine11suppressed
Spiriva HandihalerTiotropium Bromide11suppressed
SucralfateSucralfate11suppressed

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 $136.09 · 2 records Amgen Inc. FREESTYLE LIBRE 3, REPATHA
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