Healthcare provider profile · identity verified

Gilberto Marquez, M.D.

Internal Medicine · MILWAUKEE, WI · NPI 1689626731

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

Brand	Generic	Claims	Beneficiaries
Atorvastatin Calcium	Atorvastatin Calcium	433	116
Losartan Potassium	Losartan Potassium	324	97
Amlodipine Besylate	Amlodipine Besylate	291	81
Lisinopril	Lisinopril	272	75
Pantoprazole Sodium	Pantoprazole Sodium	246	56
Levothyroxine Sodium	Levothyroxine Sodium	225	59
Metoprolol Succinate	Metoprolol Succinate	165	44
Omeprazole	Omeprazole	156	45
Furosemide	Furosemide	154	37
Metformin Hcl	Metformin Hcl	145	41
Gabapentin	Gabapentin	143	43
Carvedilol	Carvedilol	117	26
Eliquis	Apixaban	117	26
Albuterol Sulfate Hfa	Albuterol Sulfate	109	31
Tamsulosin Hcl	Tamsulosin Hcl	109	32
Hydrochlorothiazide	Hydrochlorothiazide	104	36
Alprazolam	Alprazolam	97	16
Pravastatin Sodium	Pravastatin Sodium	84	23
Zolpidem Tartrate	Zolpidem Tartrate	84	17
Rosuvastatin Calcium	Rosuvastatin Calcium	82	27
Potassium Chloride	Potassium Chloride	79	23
Citalopram Hbr	Citalopram Hydrobromide	77	15
Prednisone	Prednisone	77	45
Metoprolol Tartrate	Metoprolol Tartrate	74	21
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	73	17
Fluoxetine Hcl	Fluoxetine Hcl	72	19
Oxycodone Hcl	Oxycodone Hcl	72	suppressed
Pregabalin	Pregabalin	72	13
Duloxetine Hcl	Duloxetine Hcl	71	14
Metformin Hcl Er	Metformin Hcl	71	22
Trazodone Hcl	Trazodone Hcl	69	16
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	68	18
Allopurinol	Allopurinol	67	17
Clopidogrel	Clopidogrel Bisulfate	64	22
Montelukast Sodium	Montelukast Sodium	64	16
Sertraline Hcl	Sertraline Hcl	64	15
Lorazepam	Lorazepam	60	17
Hydralazine Hcl	Hydralazine Hcl	57	13
Diclofenac Sodium	Diclofenac Sodium	55	15
Simvastatin	Simvastatin	55	17
Fluticasone Propionate	Fluticasone Propionate	54	21
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	53	15
Spironolactone	Spironolactone	53	19
Escitalopram Oxalate	Escitalopram Oxalate	52	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	51	24
Tizanidine Hcl	Tizanidine Hcl	51	15
Ezetimibe	Ezetimibe	50	11
Bupropion Xl	Bupropion Hcl	49	12
Naproxen	Naproxen	47	17
Amoxicillin	Amoxicillin	46	28
Dutasteride	Dutasteride	45	suppressed
Jardiance	Empagliflozin	43	suppressed
Methylprednisolone	Methylprednisolone	43	39
Divalproex Sodium	Divalproex Sodium	42	suppressed
Ropinirole Hcl	Ropinirole Hcl	42	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	41	14
Nifedipine Er	Nifedipine	41	suppressed
Atenolol	Atenolol	40	14
Glipizide Er	Glipizide	40	suppressed
Warfarin Sodium	Warfarin Sodium	40	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	39	12
Meloxicam	Meloxicam	38	13
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	37	21
Azithromycin	Azithromycin	34	32
Esomeprazole Magnesium	Esomeprazole Magnesium	34	suppressed
Mirtazapine	Mirtazapine	34	suppressed
Trulicity	Dulaglutide	34	suppressed
Amiodarone Hcl	Amiodarone Hcl	33	suppressed
Tramadol Hcl	Tramadol Hcl	33	17
Xarelto	Rivaroxaban	31	suppressed
Irbesartan	Irbesartan	30	suppressed
Glipizide	Glipizide	29	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	29	20
Ondansetron Odt	Ondansetron	28	16
Celecoxib	Celecoxib	27	suppressed
Breo Ellipta	Fluticasone/Vilanterol	26	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	25	21
Venlafaxine Hcl Er	Venlafaxine Hcl	24	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	23	19
Clonazepam	Clonazepam	23	suppressed
Digoxin	Digoxin	23	suppressed
Donepezil Hcl	Donepezil Hcl	23	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	22	21
Glimepiride	Glimepiride	22	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	22	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	22	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	21	suppressed
Famotidine	Famotidine	20	suppressed
Farxiga	Dapagliflozin Propanediol	20	suppressed
Januvia	Sitagliptin Phosphate	20	suppressed
Mounjaro	Tirzepatide	20	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	20	suppressed
Valsartan	Valsartan	20	suppressed
Chlorthalidone	Chlorthalidone	19	suppressed
Clonidine Hcl	Clonidine Hcl	19	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	19	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	19	suppressed
Lansoprazole	Lansoprazole	19	suppressed
Lovastatin	Lovastatin	19	suppressed
Meclizine Hcl	Meclizine Hcl	19	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	19	suppressed
Baclofen	Baclofen	18	suppressed
Bupropion Hcl Sr	Bupropion Hcl	18	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	18	suppressed
Symbicort	Budesonide/Formoterol Fumarate	18	suppressed
Diazepam	Diazepam	16	suppressed
Finasteride	Finasteride	16	suppressed
Lidocaine	Lidocaine	16	suppressed
Alendronate Sodium	Alendronate Sodium	15	suppressed
Azelastine Hcl	Azelastine Hcl	15	suppressed
Eszopiclone	Eszopiclone	15	suppressed
Fluconazole	Fluconazole	15	12
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	14	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	14	suppressed
Solifenacin Succinate	Solifenacin Succinate	14	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	13	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	13	suppressed
Letrozole	Letrozole	13	suppressed
Olanzapine	Olanzapine	13	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	12	suppressed
Methylphenidate Hcl	Methylphenidate Hcl	12	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	12	12
Potassium Citrate Er	Potassium Citrate	12	suppressed
Verapamil Sr	Verapamil Hcl	12	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	12	suppressed
Armour Thyroid	Thyroid,pork	11	suppressed
Benazepril Hcl	Benazepril Hcl	11	suppressed
Divalproex Sodium Er	Divalproex Sodium	11	suppressed
Ibandronate Sodium	Ibandronate Sodium	11	suppressed
Ipratropium Bromide	Ipratropium Bromide	11	suppressed
Paroxetine Hcl	Paroxetine Hcl	11	suppressed
Rybelsus	Semaglutide	11	suppressed

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.

Year	General Payments	Main payer	Explicit products	Company overlaps	Part D coverage
2025	—	—	—	—	—
2024	—	—	—	—	Complete

Questions to ask

Questions you could discuss with your doctor

Are there reasonable alternatives I should understand when we discuss treatment options?
How should I interpret the industry-payment records shown here in the context of my care?

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Payment and Medicare prescribing data can cover different years; every comparison shows both years explicitly.
Part D does not represent a doctor’s entire practice; it excludes many patients and is subject to CMS public-release thresholds.
Company–drug relationships must have an auditable source, a precise relationship type, and a valid evidence period. Unresolved mappings are not published.
Generic drug claims are not attributed to a specific manufacturer without manufacturer-level evidence.
When a source extract is incomplete, missing rows are never treated as proof of no payments or no prescriptions.

Loaded source releases

Dataset	Year	Publication	Source
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