Healthcare provider profile · identity verified

Alfredo Diaz, MD

Internal Medicine · TWO RIVERS, WI · NPI 1902911159

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	1632	419
Amlodipine Besylate	Amlodipine Besylate	906	227
Losartan Potassium	Losartan Potassium	852	216
Omeprazole	Omeprazole	677	173
Levothyroxine Sodium	Levothyroxine Sodium	672	142
Lisinopril	Lisinopril	643	172
Metoprolol Tartrate	Metoprolol Tartrate	599	143
Metformin Hcl	Metformin Hcl	558	130
Gabapentin	Gabapentin	540	106
Furosemide	Furosemide	529	126
Metoprolol Succinate	Metoprolol Succinate	507	125
Rosuvastatin Calcium	Rosuvastatin Calcium	500	146
Pravastatin Sodium	Pravastatin Sodium	484	109
Tamsulosin Hcl	Tamsulosin Hcl	468	106
Hydrochlorothiazide	Hydrochlorothiazide	439	122
Allopurinol	Allopurinol	420	102
Eliquis	Apixaban	404	80
Simvastatin	Simvastatin	386	92
Pantoprazole Sodium	Pantoprazole Sodium	382	99
Sertraline Hcl	Sertraline Hcl	362	90
Warfarin Sodium	Warfarin Sodium	335	70
Jardiance	Empagliflozin	293	59
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	262	69
Alendronate Sodium	Alendronate Sodium	231	55
Clopidogrel	Clopidogrel Bisulfate	221	54
Albuterol Sulfate Hfa	Albuterol Sulfate	210	82
Ezetimibe	Ezetimibe	199	53
Duloxetine Hcl	Duloxetine Hcl	188	44
Potassium Chloride	Potassium Chloride	182	40
Spironolactone	Spironolactone	181	45
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	176	45
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	163	45
Glimepiride	Glimepiride	136	35
Famotidine	Famotidine	131	34
Trulicity	Dulaglutide	123	17
Atenolol	Atenolol	121	31
Xarelto	Rivaroxaban	120	22
Citalopram Hbr	Citalopram Hydrobromide	118	38
Buspirone Hcl	Buspirone Hcl	110	27
Escitalopram Oxalate	Escitalopram Oxalate	110	24
Quetiapine Fumarate	Quetiapine Fumarate	109	19
Glipizide	Glipizide	103	23
Carvedilol	Carvedilol	102	30
Chlorthalidone	Chlorthalidone	102	32
Tizanidine Hcl	Tizanidine Hcl	102	38
Fluticasone Propionate	Fluticasone Propionate	101	36
Metformin Hcl Er	Metformin Hcl	98	29
Finasteride	Finasteride	93	16
Lovastatin	Lovastatin	93	23
Ozempic	Semaglutide	91	17
Bupropion Hcl Sr	Bupropion Hcl	85	22
Pioglitazone Hcl	Pioglitazone Hcl	82	24
Hydralazine Hcl	Hydralazine Hcl	81	19
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	78	18
Prednisone	Prednisone	78	30
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	76	20
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	76	23
Mirtazapine	Mirtazapine	72	17
Zolpidem Tartrate	Zolpidem Tartrate	70	13
Valsartan	Valsartan	67	15
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	65	19
Glipizide Er	Glipizide	65	17
Isosorbide Mononitrate Er	Isosorbide Mononitrate	62	13
Montelukast Sodium	Montelukast Sodium	61	16
Synthroid	Levothyroxine Sodium	59	17
Trazodone Hcl	Trazodone Hcl	58	19
Cephalexin	Cephalexin	54	37
Lansoprazole	Lansoprazole	53	11
Midodrine Hcl	Midodrine Hcl	53	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	52	12
Doxazosin Mesylate	Doxazosin Mesylate	49	12
Tramadol Hcl	Tramadol Hcl	49	12
Risperidone	Risperidone	48	suppressed
Donepezil Hcl	Donepezil Hcl	46	suppressed
Bumetanide	Bumetanide	43	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	43	14
Pregabalin	Pregabalin	42	suppressed
Primidone	Primidone	42	11
Hydroxyzine Hcl	Hydroxyzine Hcl	40	20
Meloxicam	Meloxicam	40	suppressed
Bupropion Xl	Bupropion Hcl	39	11
Memantine Hcl	Memantine Hcl	39	suppressed
Benazepril Hcl	Benazepril Hcl	38	suppressed
Mounjaro	Tirzepatide	37	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	37	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	36	suppressed
Divalproex Sodium	Divalproex Sodium	36	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	36	suppressed
Clonidine Hcl	Clonidine Hcl	35	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	34	17
Novolog Flexpen	Insulin Aspart	34	suppressed
Incruse Ellipta	Umeclidinium Bromide	33	suppressed
Ondansetron Odt	Ondansetron	33	11
Spiriva Respimat	Tiotropium Bromide	33	11
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	32	suppressed
Farxiga	Dapagliflozin Propanediol	31	suppressed
Alprazolam	Alprazolam	30	24
Nystatin	Nystatin	30	18
Advair Hfa	Fluticasone Propion/Salmeterol	29	suppressed
Baclofen	Baclofen	29	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	28	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	28	25
Ropinirole Hcl	Ropinirole Hcl	28	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	28	15
Ventolin Hfa	Albuterol Sulfate	28	suppressed
Amoxicillin	Amoxicillin	27	18
Humalog Kwikpen U-100	Insulin Lispro	27	suppressed
Lorazepam	Lorazepam	27	suppressed
Torsemide	Torsemide	27	suppressed
Breo Ellipta	Fluticasone/Vilanterol	25	suppressed
Bydureon Bcise	Exenatide Microspheres	25	suppressed
Divalproex Sodium Er	Divalproex Sodium	25	suppressed
Methenamine Hippurate	Methenamine Hippurate	25	suppressed
Symbicort	Budesonide/Formoterol Fumarate	25	suppressed
Tradjenta	Linagliptin	25	suppressed
Valacyclovir	Valacyclovir Hcl	25	suppressed
Enalapril Maleate	Enalapril Maleate	24	suppressed
Meclizine Hcl	Meclizine Hcl	24	12
Nifedipine Er	Nifedipine	24	suppressed
Spiriva Handihaler	Tiotropium Bromide	24	suppressed
Cilostazol	Cilostazol	23	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	23	suppressed
Albuterol Sulfate	Albuterol Sulfate	22	suppressed
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	22	suppressed
Clonazepam	Clonazepam	22	suppressed
Advair Diskus	Fluticasone Propion/Salmeterol	21	suppressed
Amiodarone Hcl	Amiodarone Hcl	21	suppressed
Aripiprazole	Aripiprazole	21	suppressed
Levetiracetam	Levetiracetam	21	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	21	suppressed
Invokana	Canagliflozin	20	suppressed
Januvia	Sitagliptin Phosphate	20	suppressed
Lamotrigine	Lamotrigine	20	suppressed
Propranolol Hcl	Propranolol Hcl	20	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	19	15
Ipratropium Bromide	Ipratropium Bromide	19	suppressed
Nitroglycerin	Nitroglycerin	19	13
Tolterodine Tartrate Er	Tolterodine Tartrate	19	suppressed
Metolazone	Metolazone	18	suppressed
Paroxetine Hcl	Paroxetine Hcl	18	suppressed
Terazosin Hcl	Terazosin Hcl	18	suppressed
Ultra-Fine Nano Pen Needle	Pen Needle, Diabetic	17	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	17	suppressed
Betamethasone Dipropionate	Betamethasone Dipropionate	16	12
Propranolol Hcl Er	Propranolol Hcl	16	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	16	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	16	suppressed
Aspirin-Dipyridamole Er	Aspirin/Dipyridamole	15	suppressed
Clobetasol Propionate	Clobetasol Propionate	15	suppressed
Eplerenone	Eplerenone	15	suppressed
Fenofibrate	Fenofibrate	15	suppressed
Indapamide	Indapamide	15	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	15	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	15	suppressed
Acyclovir	Acyclovir	14	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	14	suppressed
Benazepril-Hydrochlorothiazide	Benazepril/Hydrochlorothiazide	14	suppressed
Potassium Citrate Er	Potassium Citrate	14	suppressed
Rybelsus	Semaglutide	14	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	14	suppressed
Varenicline Tartrate	Varenicline Tartrate	14	suppressed
Colchicine	Colchicine	13	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	13	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	13	suppressed
Humulin R U-500 Kwikpen	Insulin Regular, Human	13	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	13	suppressed
Klor-Con M20	Potassium Chloride	13	suppressed
Latanoprost	Latanoprost	13	suppressed
Levemir Flexpen	Insulin Detemir	13	suppressed
Novolog Mix 70-30 Flexpen	Insulin Aspart Prot/Insuln Asp	13	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	13	suppressed
Rivastigmine	Rivastigmine Tartrate	13	suppressed
Saxagliptin Hcl	Saxagliptin Hcl	13	suppressed
Sildenafil Citrate	Sildenafil Citrate	13	suppressed
Tramadol Hcl Er	Tramadol Hcl	13	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	12	suppressed
Dantrolene Sodium	Dantrolene Sodium	12	suppressed
Dexlansoprazole Dr	Dexlansoprazole	12	suppressed
Dilantin	Phenytoin Sodium Extended	12	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	12	suppressed
Eszopiclone	Eszopiclone	12	suppressed
Fluticasone Propionate Hfa	Fluticasone Propionate	12	suppressed
Insulin Lispro Protamine Mix	Insulin Lispro Protamin/Lispro	12	suppressed
Lidocaine	Lidocaine	12	suppressed
Ranolazine Er	Ranolazine	12	suppressed
Amiloride Hcl	Amiloride Hcl	11	suppressed
Brimonidine Tartrate	Brimonidine Tartrate	11	suppressed
Dexilant	Dexlansoprazole	11	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	11	suppressed
Dulera	Mometasone/Formoterol	11	suppressed
Fluconazole	Fluconazole	11	suppressed
Invokamet	Canagliflozin/Metformin Hcl	11	suppressed
Mesalamine	Mesalamine	11	suppressed
Pindolol	Pindolol	11	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	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