Healthcare provider profile · identity verified

Stuart Lee Warnaar, MD

Internal Medicine · TRAVERSE CITY, MI · NPI 1245235472

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	637	188
Losartan Potassium	Losartan Potassium	480	127
Amlodipine Besylate	Amlodipine Besylate	461	121
Levothyroxine Sodium	Levothyroxine Sodium	431	118
Lisinopril	Lisinopril	317	91
Simvastatin	Simvastatin	309	83
Omeprazole	Omeprazole	294	83
Metoprolol Succinate	Metoprolol Succinate	257	69
Alprazolam	Alprazolam	246	71
Rosuvastatin Calcium	Rosuvastatin Calcium	227	72
Eliquis	Apixaban	224	47
Hydrochlorothiazide	Hydrochlorothiazide	214	62
Pantoprazole Sodium	Pantoprazole Sodium	208	53
Tamsulosin Hcl	Tamsulosin Hcl	206	57
Metformin Hcl	Metformin Hcl	202	59
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	196	35
Metformin Hcl Er	Metformin Hcl	178	52
Gabapentin	Gabapentin	171	47
Potassium Chloride	Potassium Chloride	158	39
Escitalopram Oxalate	Escitalopram Oxalate	141	46
Trazodone Hcl	Trazodone Hcl	140	45
Fluticasone Propionate	Fluticasone Propionate	130	40
Allopurinol	Allopurinol	117	35
Jardiance	Empagliflozin	115	33
Tramadol Hcl	Tramadol Hcl	110	26
Bumetanide	Bumetanide	106	35
Sertraline Hcl	Sertraline Hcl	103	29
Meloxicam	Meloxicam	98	32
Carvedilol	Carvedilol	97	29
Furosemide	Furosemide	93	26
Bupropion Xl	Bupropion Hcl	91	24
Citalopram Hbr	Citalopram Hydrobromide	90	26
Pravastatin Sodium	Pravastatin Sodium	90	23
Metoprolol Tartrate	Metoprolol Tartrate	83	22
Prednisone	Prednisone	81	32
Xarelto	Rivaroxaban	81	15
Spironolactone	Spironolactone	77	21
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	77	22
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	73	21
Warfarin Sodium	Warfarin Sodium	73	19
Montelukast Sodium	Montelukast Sodium	71	18
Zolpidem Tartrate	Zolpidem Tartrate	71	20
Lorazepam	Lorazepam	68	13
Albuterol Sulfate Hfa	Albuterol Sulfate	67	22
Atenolol	Atenolol	67	18
Glimepiride	Glimepiride	66	21
Trulicity	Dulaglutide	66	14
Morphine Sulfate Er	Morphine Sulfate	62	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	56	17
Duloxetine Hcl	Duloxetine Hcl	54	12
Fenofibrate	Fenofibrate	54	13
Irbesartan	Irbesartan	53	16
Oxycodone Hcl	Oxycodone Hcl	53	18
Clonazepam	Clonazepam	51	suppressed
Ozempic	Semaglutide	51	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	48	11
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	47	16
Finasteride	Finasteride	46	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	43	13
Valsartan	Valsartan	43	13
Bupropion Hcl Sr	Bupropion Hcl	42	suppressed
Terazosin Hcl	Terazosin Hcl	40	suppressed
Estradiol	Estradiol	39	13
Ibuprofen	Ibuprofen	39	13
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	39	suppressed
Clopidogrel	Clopidogrel Bisulfate	38	13
Mirtazapine	Mirtazapine	38	suppressed
Lovastatin	Lovastatin	37	suppressed
Raloxifene Hcl	Raloxifene Hcl	37	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	36	12
Enalapril Maleate	Enalapril Maleate	34	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	31	suppressed
Mounjaro	Tirzepatide	31	suppressed
Ipratropium Bromide	Ipratropium Bromide	30	11
Januvia	Sitagliptin Phosphate	30	suppressed
Synthroid	Levothyroxine Sodium	30	suppressed
Famotidine	Famotidine	29	suppressed
Valacyclovir	Valacyclovir Hcl	29	16
Breo Ellipta	Fluticasone/Vilanterol	28	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	28	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	28	suppressed
Memantine Hcl	Memantine Hcl	26	suppressed
Benazepril Hcl	Benazepril Hcl	25	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	25	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	25	suppressed
Paroxetine Hcl	Paroxetine Hcl	25	suppressed
Diazepam	Diazepam	24	suppressed
Acyclovir	Acyclovir	23	suppressed
Symbicort	Budesonide/Formoterol Fumarate	23	suppressed
Alendronate Sodium	Alendronate Sodium	22	suppressed
Cephalexin	Cephalexin	22	13
Fenofibrate	Fenofibrate Nanocrystallized	22	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	22	suppressed
Farxiga	Dapagliflozin Propanediol	21	suppressed
Propranolol Hcl	Propranolol Hcl	21	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	20	suppressed
Clonidine Hcl	Clonidine Hcl	20	suppressed
Levetiracetam	Levetiracetam	20	suppressed
Celecoxib	Celecoxib	18	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	18	suppressed
Hydralazine Hcl	Hydralazine Hcl	18	suppressed
Pregabalin	Pregabalin	18	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	18	suppressed
Ezetimibe	Ezetimibe	17	suppressed
Ramipril	Ramipril	17	suppressed
Spironolactone-Hctz	Spironolact/Hydrochlorothiazid	17	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	17	suppressed
Fluconazole	Fluconazole	16	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	16	suppressed
Verapamil Er	Verapamil Hcl	16	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	15	suppressed
Glyxambi	Empagliflozin/Linagliptin	15	suppressed
Methylphenidate Hcl	Methylphenidate Hcl	15	suppressed
Naproxen	Naproxen	15	suppressed
Ropinirole Hcl	Ropinirole Hcl	15	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	15	suppressed
Amoxicillin	Amoxicillin	14	suppressed
Novolog Flexpen	Insulin Aspart	14	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	14	suppressed
Toujeo Max Solostar	Insulin Glargine,hum.Rec.Anlog	14	suppressed
Azithromycin	Azithromycin	13	suppressed
Dutasteride	Dutasteride	13	suppressed
Myrbetriq	Mirabegron	13	suppressed
Nitroglycerin	Nitroglycerin	13	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	13	12
Telmisartan	Telmisartan	13	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	12	suppressed
Lansoprazole	Lansoprazole	12	suppressed
Liothyronine Sodium	Liothyronine Sodium	12	suppressed
Nadolol	Nadolol	12	suppressed
Sildenafil Citrate	Sildenafil Citrate	12	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	12	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	11	suppressed
Chlorthalidone	Chlorthalidone	11	suppressed
Divalproex Sodium	Divalproex Sodium	11	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	11	suppressed
Loperamide	Loperamide Hcl	11	suppressed
Ondansetron Hcl	Ondansetron Hcl	11	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	11	suppressed
Pacerone	Amiodarone Hcl	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