Healthcare provider profile · identity verified

Guillermo Madero, MD

Allopathic & Osteopathic Physicians|Internal Medicine · SAN ANTONIO, TX · NPI 1235384439

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 Guillermo Madero, MD received $498.34 in general payments during 2025 across 29 reported records.

Novo Nordisk Inc accounted for 27.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 19 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Ozempic, Rybelsus.

ABBVIE INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 35 claims for Linzess by this doctor in 2024.

Boehringer Ingelheim Pharmaceuticals, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 163 claims for Jardiance by this doctor in 2024.

Boehringer Ingelheim Pharmaceuticals, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported SYNJARDY as an associated drug or biological on 33 records involving 33 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Synjardy by this doctor in 2024.

GlaxoSmithKline, LLC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 28 claims for Trelegy Ellipta by this doctor in 2024.

Novo Nordisk Inc reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 167 claims for Ozempic by this doctor in 2024.

Novo Nordisk Inc reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Rybelsus as an associated drug or biological on 161257 records involving 55409 distinct recipient NPIs. Public Medicare Part D data also shows 36 claims for Rybelsus by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 84 claims for Eliquis by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$498.34

29 reported records · 12 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
Novo Nordisk Inc Unresolved — no canonical attribution shown $137.0227.5%112025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $94.6519.0%42025
Abbott Laboratories Unresolved — no canonical attribution shown $72.9814.6%32025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $40.408.1%22025
PFIZER INC. Unresolved — no canonical attribution shown $36.257.3%22025
KYOWA KIRIN, INC. Unresolved — no canonical attribution shown $20.804.2%12025
CVRx, Inc. Unresolved — no canonical attribution shown $20.164.0%12025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $17.213.5%12025
Amgen Inc. Unresolved — no canonical attribution shown $14.953.0%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $14.873.0%12025
ABBVIE INC. Unresolved — no canonical attribution shown $14.713.0%12025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $14.342.9%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$498.3429

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
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $94.65 4 2025
Source payment records
FREESTYLE LIBRE 3
Normalized: freestyle libre 3
Device Abbott Laboratories $72.98 3 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $71.64 6 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $54.32 5 2025
Source payment records
CRYSVITA
Normalized: crysvita
Drug KYOWA KIRIN, INC. $20.80 1 2025
Source payment records
Barostim Neo System
Normalized: barostim neo system
Device CVRx, Inc. $20.16 1 2025
Source payment records
ABRYSVO
Normalized: abrysvo
Biological PFIZER INC. $18.91 1 2025
Source payment records
COMIRNATY
Normalized: comirnaty
Biological PFIZER INC. $18.91 1 2025
Source payment records
PREVNAR 20
Normalized: prevnar 20
Biological PFIZER INC. $18.91 1 2025
Source payment records
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $17.34 1 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $17.21 1 2025
Source payment records
SHINGRIX
Normalized: shingrix
Biological GlaxoSmithKline, LLC. $17.21 1 2025
Source payment records
OTEZLA
Normalized: otezla
Drug Amgen Inc. $14.95 1 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $14.95 1 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $14.87 1 2025
Source payment records
  • 2025-02-28 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $14.87 · Open Payments source
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $14.71 1 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $14.71 1 2025
Source payment records
CAPVAXIVE
Normalized: capvaxive
Biological Merck Sharp & Dohme LLC $14.34 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $12.55 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

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
Ozempic
ozempic
2025 Ozempic 2024 167 exact normalized Medicare Part D
Rybelsus
rybelsus
2025 Rybelsus 2024 36
Beneficiary count suppressed
exact normalized Medicare Part D

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.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 LINZESS
open payments reported associated product
CMS Open Payments — General Payments
87954 supporting records · 21815 recipient NPIs · example record 1201352608
Linzess · 2024
Exact normalized brand match · 1 Part D row
35 13
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
163 57
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 SYNJARDY
open payments reported associated product
CMS Open Payments — General Payments
33 supporting records · 33 recipient NPIs · example record 1222725005
Synjardy · 2024
Exact normalized brand match · 1 Part D row
17 suppressed by CMS
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
28 suppressed by CMS
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Ozempic
open payments reported associated product
CMS Open Payments — General Payments
261625 supporting records · 77793 recipient NPIs · example record 1188130076
Ozempic · 2024
Exact normalized brand match · 1 Part D row
167 36
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Rybelsus
open payments reported associated product
CMS Open Payments — General Payments
161257 supporting records · 55409 recipient NPIs · example record 1188130076
Rybelsus · 2024
Exact normalized brand match · 1 Part D row
36 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
84 23

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 Calcium939310
LisinoprilLisinopril573191
Losartan PotassiumLosartan Potassium478154
Metformin HclMetformin Hcl414144
Amlodipine BesylateAmlodipine Besylate412137
GabapentinGabapentin372133
Levothyroxine SodiumLevothyroxine Sodium29993
Rosuvastatin CalciumRosuvastatin Calcium294101
Tizanidine HclTizanidine Hcl273119
Pantoprazole SodiumPantoprazole Sodium26294
Metoprolol SuccinateMetoprolol Succinate23572
Tamsulosin HclTamsulosin Hcl22981
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride21991
Albuterol Sulfate HfaAlbuterol Sulfate19974
Fluticasone PropionateFluticasone Propionate18173
OmeprazoleOmeprazole17663
HydrochlorothiazideHydrochlorothiazide16858
OzempicSemaglutide16736
JardianceEmpagliflozin16357
Montelukast SodiumMontelukast Sodium16061
Pravastatin SodiumPravastatin Sodium15851
CarvedilolCarvedilol15256
Vitamin D2Ergocalciferol (Vitamin D2)15156
FamotidineFamotidine14951
Trazodone HclTrazodone Hcl14554
Tramadol HclTramadol Hcl14139
Alendronate SodiumAlendronate Sodium13143
GlipizideGlipizide13146
FurosemideFurosemide12745
Sertraline HclSertraline Hcl12442
Pioglitazone HclPioglitazone Hcl10239
Metformin Hcl ErMetformin Hcl10133
Duloxetine HclDuloxetine Hcl10036
Zolpidem TartrateZolpidem Tartrate9421
EliquisApixaban8423
Lantus SolostarInsulin Glargine,hum.Rec.Anlog8224
Dicyclomine HclDicyclomine Hcl7933
KetoconazoleKetoconazole7751
Nifedipine ErNifedipine7533
CelecoxibCelecoxib7223
Enalapril MaleateEnalapril Maleate7222
IbuprofenIbuprofen7131
FinasterideFinasteride6924
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters6931
SimvastatinSimvastatin6822
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen6721
JanuviaSitagliptin Phosphate6721
Oxybutynin ChlorideOxybutynin Chloride6728
Hydroxyzine HclHydroxyzine Hcl6635
TrulicityDulaglutide6615
CephalexinCephalexin6558
MounjaroTirzepatide6512
PregabalinPregabalin6418
Buspirone HclBuspirone Hcl6320
ClopidogrelClopidogrel Bisulfate6325
Acetaminophen-CodeineAcetaminophen With Codeine6125
Doxycycline MonohydrateDoxycycline Monohydrate6050
Olmesartan MedoxomilOlmesartan Medoxomil5716
PrednisonePrednisone5750
EzetimibeEzetimibe5625
Meclizine HclMeclizine Hcl5627
AllopurinolAllopurinol5422
MyrbetriqMirabegron5218
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav5149
Metoprolol TartrateMetoprolol Tartrate5020
Diclofenac SodiumDiclofenac Sodium4726
Escitalopram OxalateEscitalopram Oxalate4725
Donepezil HclDonepezil Hcl4617
GlimepirideGlimepiride4616
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip4426
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide4314
FarxigaDapagliflozin Propanediol4213
Potassium ChloridePotassium Chloride4220
TopiramateTopiramate4117
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide3914
Ropinirole HclRopinirole Hcl3912
ValsartanValsartan3913
LevetiracetamLevetiracetam37suppressed
RybelsusSemaglutide36suppressed
FenofibrateFenofibrate3514
LinzessLinaclotide3513
EszopicloneEszopiclone34suppressed
Bupropion Hcl SrBupropion Hcl3312
Bydureon BciseExenatide Microspheres33suppressed
LovastatinLovastatin31suppressed
MeloxicamMeloxicam3112
AlprazolamAlprazolam30suppressed
Citalopram HbrCitalopram Hydrobromide3014
Esomeprazole MagnesiumEsomeprazole Magnesium30suppressed
FluconazoleFluconazole2920
Glipizide ErGlipizide29suppressed
JanumetSitagliptin Phos/Metformin Hcl29suppressed
Sildenafil CitrateSildenafil Citrate28suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter28suppressed
CiclopiroxCiclopirox2717
Hydralazine HclHydralazine Hcl27suppressed
Benazepril HclBenazepril Hcl26suppressed
MirtazapineMirtazapine2613
Oxybutynin Chloride ErOxybutynin Chloride26suppressed
SymbicortBudesonide/Formoterol Fumarate26suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril25suppressed
Venlafaxine Hcl ErVenlafaxine Hcl25suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog24suppressed
ClonazepamClonazepam23suppressed
Folic AcidFolic Acid2311
Tramadol Hcl-AcetaminophenTramadol Hcl/Acetaminophen23suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl2213
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog22suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2218
Ciprofloxacin HclCiprofloxacin Hcl2120
Ondansetron HclOndansetron Hcl2115
Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog21suppressed
AzithromycinAzithromycin2019
LactuloseLactulose20suppressed
NitroglycerinNitroglycerin20suppressed
Quetiapine FumarateQuetiapine Fumarate20suppressed
AtenololAtenolol19suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol19suppressed
MupirocinMupirocin1913
Neomycin-Polymyxin-HydrocortNeomycin/Polymyxin B/Hydrocort1918
Breo ElliptaFluticasone/Vilanterol18suppressed
MethocarbamolMethocarbamol1811
SpironolactoneSpironolactone18suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic17suppressed
SynjardyEmpagliflozin/Metformin Hcl17suppressed
CholestyramineCholestyramine (With Sugar)16suppressed
Doxepin HclDoxepin Hcl16suppressed
Propranolol HclPropranolol Hcl16suppressed
XareltoRivaroxaban16suppressed
TelmisartanTelmisartan15suppressed
Ventolin HfaAlbuterol Sulfate1511
LevofloxacinLevofloxacin1414
TradjentaLinagliptin14suppressed
Warfarin SodiumWarfarin Sodium14suppressed
AmoxicillinAmoxicillin13suppressed
DiazepamDiazepam13suppressed
HydrocortisoneHydrocortisone1311
Nebivolol HclNebivolol Hcl13suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1311
Spiriva HandihalerTiotropium Bromide13suppressed
Varenicline TartrateVarenicline Tartrate13suppressed
Carbidopa-Levodopa ErCarbidopa/Levodopa12suppressed
Clonidine HclClonidine Hcl12suppressed
ClotrimazoleClotrimazole12suppressed
TadalafilTadalafil12suppressed
AripiprazoleAripiprazole11suppressed
Clobetasol PropionateClobetasol Propionate11suppressed
GemtesaVibegron11suppressed
Insulin Lispro Kwikpen U-100Insulin Lispro11suppressed
LorazepamLorazepam11suppressed
MetronidazoleMetronidazole1111
Novolin 70-30 FlexpenInsulin Nph Hum/Reg Insulin Hm11suppressed
Phenytoin Sodium ExtendedPhenytoin Sodium Extended11suppressed
Ulticare Pen NeedlePen Needle, Diabetic11suppressed
ValacyclovirValacyclovir 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 $498.34 · 29 records Novo Nordisk Inc ABRYSVO, AREXVY, Barostim Neo System, CAPVAXIVE, COMIRNATY, CRYSVITA, FREESTYLE LIBRE 3, Kerendia, OTEZLA, Ozempic, PAXLOVID, PREVNAR 20, QULIPTA, REPATHA, Rybelsus, SHINGRIX, UBRELVY, Wegovy, XIFAXAN 7
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