Healthcare provider profile · identity verified

Michael H Zeihen, MD

Internal Medicine · KENOSHA, WI · NPI 1043266992

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
Amlodipine Besylate	Amlodipine Besylate	457	119
Atorvastatin Calcium	Atorvastatin Calcium	449	116
Levothyroxine Sodium	Levothyroxine Sodium	393	90
Lisinopril	Lisinopril	309	74
Metformin Hcl	Metformin Hcl	302	87
Simvastatin	Simvastatin	255	68
Alprazolam	Alprazolam	232	49
Omeprazole	Omeprazole	225	51
Furosemide	Furosemide	211	51
Oxycodone Hcl	Oxycodone Hcl	207	30
Gabapentin	Gabapentin	206	51
Losartan Potassium	Losartan Potassium	190	49
Allopurinol	Allopurinol	184	39
Tamsulosin Hcl	Tamsulosin Hcl	182	39
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	172	26
Metoprolol Succinate	Metoprolol Succinate	165	43
Tramadol Hcl	Tramadol Hcl	152	45
Pantoprazole Sodium	Pantoprazole Sodium	138	35
Clopidogrel	Clopidogrel Bisulfate	137	38
Hydrochlorothiazide	Hydrochlorothiazide	136	37
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	125	40
Sertraline Hcl	Sertraline Hcl	113	21
Rosuvastatin Calcium	Rosuvastatin Calcium	109	29
Warfarin Sodium	Warfarin Sodium	108	19
Ezetimibe	Ezetimibe	102	23
Potassium Chloride	Potassium Chloride	99	25
Metoprolol Tartrate	Metoprolol Tartrate	91	24
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	88	15
Lorazepam	Lorazepam	87	24
Ozempic	Semaglutide	86	15
Carvedilol	Carvedilol	84	22
Eliquis	Apixaban	80	13
Albuterol Sulfate Hfa	Albuterol Sulfate	78	31
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	77	27
Mirtazapine	Mirtazapine	77	24
Enalapril Maleate	Enalapril Maleate	76	19
Spironolactone	Spironolactone	64	19
Zolpidem Tartrate	Zolpidem Tartrate	62	16
Alendronate Sodium	Alendronate Sodium	58	15
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	56	47
Trulicity	Dulaglutide	56	suppressed
Xarelto	Rivaroxaban	56	suppressed
Pravastatin Sodium	Pravastatin Sodium	54	12
Diazepam	Diazepam	51	11
Prednisone	Prednisone	50	30
Ondansetron Hcl	Ondansetron Hcl	48	suppressed
Ibandronate Sodium	Ibandronate Sodium	46	12
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	46	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	45	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	44	suppressed
Duloxetine Hcl	Duloxetine Hcl	44	suppressed
Jardiance	Empagliflozin	44	14
Montelukast Sodium	Montelukast Sodium	44	suppressed
Metformin Hcl Er	Metformin Hcl	43	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	42	12
Trazodone Hcl	Trazodone Hcl	42	13
Amiodarone Hcl	Amiodarone Hcl	41	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	40	suppressed
Lovastatin	Lovastatin	40	suppressed
Donepezil Hcl	Donepezil Hcl	39	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	39	11
Bumetanide	Bumetanide	38	11
Celecoxib	Celecoxib	37	suppressed
Primidone	Primidone	36	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	35	11
Azithromycin	Azithromycin	32	22
Cephalexin	Cephalexin	31	20
Xtampza Er	Oxycodone Myristate	31	suppressed
Farxiga	Dapagliflozin Propanediol	30	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	29	suppressed
Niacin Er	Niacin	29	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	29	21
Triamcinolone Acetonide	Triamcinolone Acetonide	29	15
Famotidine	Famotidine	28	suppressed
Finasteride	Finasteride	28	suppressed
Fluticasone Propionate	Fluticasone Propionate	28	12
Glipizide	Glipizide	28	suppressed
Levetiracetam	Levetiracetam	27	suppressed
Invokana	Canagliflozin	26	suppressed
Midodrine Hcl	Midodrine Hcl	26	suppressed
Verapamil Er	Verapamil Hcl	25	suppressed
Hydralazine Hcl	Hydralazine Hcl	24	suppressed
Methylphenidate Hcl	Methylphenidate Hcl	24	suppressed
Ventolin Hfa	Albuterol Sulfate	24	suppressed
Latanoprost	Latanoprost	23	suppressed
Nitrofurantoin	Nitrofurantoin Macrocrystal	23	suppressed
Myrbetriq	Mirabegron	22	suppressed
Glimepiride	Glimepiride	21	suppressed
Paroxetine Hcl	Paroxetine Hcl	21	suppressed
Synthroid	Levothyroxine Sodium	21	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	20	12
Hydroxyzine Hcl	Hydroxyzine Hcl	20	suppressed
Levemir Flexpen	Insulin Detemir	20	suppressed
Methylprednisolone	Methylprednisolone	19	16
Nystatin	Nystatin	19	suppressed
Pregabalin	Pregabalin	19	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	18	suppressed
Bupropion Xl	Bupropion Hcl	18	suppressed
Meloxicam	Meloxicam	18	suppressed
Nifedipine Er	Nifedipine	18	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	18	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	17	suppressed
Benazepril Hcl	Benazepril Hcl	17	suppressed
Calcium Acetate	Calcium Acetate	17	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	17	suppressed
Citalopram Hbr	Citalopram Hydrobromide	17	suppressed
Clonidine Hcl	Clonidine Hcl	17	suppressed
Etodolac	Etodolac	17	suppressed
Januvia	Sitagliptin Phosphate	17	suppressed
Lidocaine	Lidocaine	17	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	17	suppressed
Propranolol Hcl Er	Propranolol Hcl	17	suppressed
Tizanidine Hcl	Tizanidine Hcl	17	suppressed
Trimethoprim	Trimethoprim	17	suppressed
Atenolol	Atenolol	16	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	16	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	16	suppressed
Propranolol Hcl	Propranolol Hcl	16	suppressed
Ropinirole Hcl	Ropinirole Hcl	16	suppressed
Amoxicillin	Amoxicillin	15	suppressed
Droplet Pen Needle	Pen Needle, Diabetic	15	suppressed
Klor-Con M20	Potassium Chloride	15	suppressed
Mounjaro	Tirzepatide	15	suppressed
Temazepam	Temazepam	15	suppressed
Valacyclovir	Valacyclovir Hcl	15	11
Anastrozole	Anastrozole	14	suppressed
Cartia Xt	Diltiazem Hcl	14	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	14	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	14	suppressed
Fenofibrate	Fenofibrate,micronized	14	suppressed
Humalog Kwikpen U-100	Insulin Lispro	14	suppressed
Loperamide	Loperamide Hcl	14	suppressed
Meclizine Hcl	Meclizine Hcl	14	suppressed
Theophylline Er	Theophylline Anhydrous	14	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	14	suppressed
Amantadine	Amantadine Hcl	13	suppressed
Breo Ellipta	Fluticasone/Vilanterol	13	suppressed
Chlorthalidone	Chlorthalidone	13	suppressed
Diclofenac Sodium	Diclofenac Sodium	13	suppressed
Divalproex Sodium	Divalproex Sodium	13	suppressed
Gemfibrozil	Gemfibrozil	13	suppressed
Memantine Hcl Er	Memantine Hcl	13	suppressed
Sucralfate	Sucralfate	13	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	13	suppressed
Amlodipine-Valsartan	Amlodipine Besylate/Valsartan	12	suppressed
Carbamazepine	Carbamazepine	12	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	12	suppressed
Ibuprofen	Ibuprofen	12	suppressed
Indapamide	Indapamide	12	suppressed
Labetalol Hcl	Labetalol Hcl	12	suppressed
Methenamine Hippurate	Methenamine Hippurate	12	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	12	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	12	suppressed
Brimonidine Tartrate	Brimonidine Tartrate	11	suppressed
Dilantin	Phenytoin Sodium Extended	11	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-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