Healthcare provider profile · identity verified

Leszek J Marczewski, MD

Family Practice · SAC CITY, IA · NPI 1508837972

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
Levothyroxine Sodium	Levothyroxine Sodium	343	58
Atorvastatin Calcium	Atorvastatin Calcium	242	44
Amlodipine Besylate	Amlodipine Besylate	188	41
Lisinopril	Lisinopril	188	42
Gabapentin	Gabapentin	186	40
Losartan Potassium	Losartan Potassium	184	46
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	183	38
Eliquis	Apixaban	180	20
Furosemide	Furosemide	177	35
Potassium Chloride	Potassium Chloride	169	26
Metformin Hcl	Metformin Hcl	160	38
Metoprolol Succinate	Metoprolol Succinate	160	38
Simvastatin	Simvastatin	157	41
Omeprazole	Omeprazole	145	34
Pantoprazole Sodium	Pantoprazole Sodium	141	30
Tramadol Hcl	Tramadol Hcl	136	33
Cefuroxime	Cefuroxime Axetil	105	86
Tamsulosin Hcl	Tamsulosin Hcl	99	20
Sertraline Hcl	Sertraline Hcl	96	13
Prednisone	Prednisone	82	52
Lorazepam	Lorazepam	80	23
Trazodone Hcl	Trazodone Hcl	78	12
Warfarin Sodium	Warfarin Sodium	78	16
Allopurinol	Allopurinol	77	14
Benztropine Mesylate	Benztropine Mesylate	74	suppressed
Risperidone	Risperidone	72	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	68	17
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	68	suppressed
Rosuvastatin Calcium	Rosuvastatin Calcium	65	12
Escitalopram Oxalate	Escitalopram Oxalate	61	suppressed
Hydrochlorothiazide	Hydrochlorothiazide	59	17
Metoprolol Tartrate	Metoprolol Tartrate	57	19
Doxycycline Monohydrate	Doxycycline Monohydrate	49	40
Xarelto	Rivaroxaban	49	suppressed
Haloperidol	Haloperidol	48	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	48	suppressed
Albuterol Sulfate Hfa	Albuterol Sulfate	47	15
Zolpidem Tartrate	Zolpidem Tartrate	46	suppressed
Clopidogrel	Clopidogrel Bisulfate	44	12
Finasteride	Finasteride	43	suppressed
Lactulose	Lactulose	42	suppressed
Januvia	Sitagliptin Phosphate	41	suppressed
Metformin Hcl Er	Metformin Hcl	41	suppressed
Propranolol Hcl	Propranolol Hcl	40	suppressed
Jardiance	Empagliflozin	38	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	38	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	37	suppressed
Ropinirole Hcl	Ropinirole Hcl	37	suppressed
Duloxetine Hcl	Duloxetine Hcl	36	suppressed
Carvedilol	Carvedilol	34	suppressed
Bupropion Xl	Bupropion Hcl	33	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	33	suppressed
Amiodarone Hcl	Amiodarone Hcl	32	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	32	suppressed
Glimepiride	Glimepiride	32	suppressed
Lamotrigine	Lamotrigine	32	suppressed
Montelukast Sodium	Montelukast Sodium	32	suppressed
Fluticasone Propionate	Fluticasone Propionate	31	suppressed
Paroxetine Hcl	Paroxetine Hcl	31	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	30	suppressed
Levetiracetam	Levetiracetam	30	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	30	24
Trulicity	Dulaglutide	30	suppressed
Baclofen	Baclofen	29	suppressed
Celecoxib	Celecoxib	29	suppressed
Methotrexate	Methotrexate Sodium	28	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	28	20
Clonazepam	Clonazepam	27	suppressed
Lubiprostone	Lubiprostone	27	suppressed
Risperdal Consta	Risperidone Microspheres	27	suppressed
Spironolactone	Spironolactone	27	suppressed
Tradjenta	Linagliptin	26	suppressed
Doxepin Hcl	Doxepin Hcl	25	suppressed
Meloxicam	Meloxicam	25	suppressed
Topiramate	Topiramate	25	suppressed
Bupropion Hcl Sr	Bupropion Hcl	24	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	24	suppressed
Fluconazole	Fluconazole	23	suppressed
Azithromycin	Azithromycin	21	suppressed
Benazepril Hcl	Benazepril Hcl	21	suppressed
Glipizide Er	Glipizide	21	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	21	suppressed
Myrbetriq	Mirabegron	21	suppressed
Clonidine Hcl	Clonidine Hcl	20	suppressed
Famotidine	Famotidine	20	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	19	13
Medroxyprogesterone Acetate	Medroxyprogesterone Acetate	19	suppressed
Mirtazapine	Mirtazapine	19	suppressed
Naproxen	Naproxen	19	suppressed
Buspirone Hcl	Buspirone Hcl	18	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	18	suppressed
Ozempic	Semaglutide	18	suppressed
Pravastatin Sodium	Pravastatin Sodium	18	suppressed
Divalproex Sodium	Divalproex Sodium	17	suppressed
Levemir	Insulin Detemir	17	suppressed
Midodrine Hcl	Midodrine Hcl	17	suppressed
Amantadine	Amantadine Hcl	16	suppressed
Atenolol	Atenolol	16	suppressed
Citalopram Hbr	Citalopram Hydrobromide	16	suppressed
Ipratropium Bromide	Ipratropium Bromide	16	suppressed
Latanoprost	Latanoprost	16	suppressed
Memantine Hcl	Memantine Hcl	16	suppressed
Mupirocin	Mupirocin	16	14
Ondansetron Hcl	Ondansetron Hcl	16	suppressed
Donepezil Hcl	Donepezil Hcl	15	suppressed
Glipizide	Glipizide	15	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	15	suppressed
Amoxicillin	Amoxicillin	14	suppressed
Breo Ellipta	Fluticasone/Vilanterol	14	suppressed
Gentamicin Sulfate	Gentamicin Sulfate	14	13
Oxycodone Hcl	Oxycodone Hcl	14	suppressed
Torsemide	Torsemide	14	suppressed
Alprazolam	Alprazolam	13	suppressed
Cephalexin	Cephalexin	13	suppressed
Colchicine	Colchicine	13	suppressed
Divalproex Sodium Er	Divalproex Sodium	13	suppressed
Humalog Kwikpen U-100	Insulin Lispro	13	suppressed
Liothyronine Sodium	Liothyronine Sodium	13	suppressed
Primidone	Primidone	13	suppressed
Propranolol Hcl Er	Propranolol Hcl	13	suppressed
Synthroid	Levothyroxine Sodium	13	suppressed
Bupropion Hcl	Bupropion Hcl	12	suppressed
Clozapine	Clozapine	12	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	12	suppressed
Enbrel	Etanercept	12	suppressed
Hydrocodone-Ibuprofen	Hydrocodone/Ibuprofen	12	suppressed
Lurasidone Hcl	Lurasidone Hcl	12	suppressed
Metolazone	Metolazone	12	suppressed
Pregabalin	Pregabalin	12	suppressed
Rivastigmine	Rivastigmine Tartrate	12	suppressed
Ziprasidone Hcl	Ziprasidone Hcl	12	suppressed
Advair Diskus	Fluticasone Propion/Salmeterol	11	suppressed
Cefdinir	Cefdinir	11	suppressed
Invega Sustenna	Paliperidone Palmitate	11	suppressed
Morphine Sulfate Er	Morphine Sulfate	11	suppressed
Tresiba	Insulin Degludec	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

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