Healthcare provider profile · identity verified

Mark A. Clemence, M.D.

Internal Medicine · HALES CORNERS, WI · NPI 1255324216

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	758	204
Levothyroxine Sodium	Levothyroxine Sodium	585	145
Amlodipine Besylate	Amlodipine Besylate	440	120
Omeprazole	Omeprazole	314	92
Losartan Potassium	Losartan Potassium	310	86
Lisinopril	Lisinopril	300	80
Pantoprazole Sodium	Pantoprazole Sodium	261	85
Alprazolam	Alprazolam	248	52
Simvastatin	Simvastatin	240	61
Metoprolol Succinate	Metoprolol Succinate	203	55
Valsartan	Valsartan	189	51
Gabapentin	Gabapentin	181	47
Rosuvastatin Calcium	Rosuvastatin Calcium	170	51
Hydrochlorothiazide	Hydrochlorothiazide	168	45
Metoprolol Tartrate	Metoprolol Tartrate	161	42
Albuterol Sulfate Hfa	Albuterol Sulfate	157	61
Metformin Hcl	Metformin Hcl	157	43
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	149	40
Tamsulosin Hcl	Tamsulosin Hcl	149	44
Sertraline Hcl	Sertraline Hcl	145	37
Methylprednisolone	Methylprednisolone	142	94
Tramadol Hcl	Tramadol Hcl	141	33
Clopidogrel	Clopidogrel Bisulfate	140	36
Lorazepam	Lorazepam	139	32
Allopurinol	Allopurinol	129	40
Escitalopram Oxalate	Escitalopram Oxalate	124	36
Furosemide	Furosemide	119	45
Azithromycin	Azithromycin	113	82
Trazodone Hcl	Trazodone Hcl	112	32
Zolpidem Tartrate	Zolpidem Tartrate	111	26
Ozempic	Semaglutide	109	27
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	105	30
Fluoxetine Hcl	Fluoxetine Hcl	102	27
Metformin Hcl Er	Metformin Hcl	93	33
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	91	26
Tizanidine Hcl	Tizanidine Hcl	88	36
Glipizide Er	Glipizide	79	22
Montelukast Sodium	Montelukast Sodium	78	24
Potassium Chloride	Potassium Chloride	72	17
Cephalexin	Cephalexin	71	46
Meloxicam	Meloxicam	66	25
Eliquis	Apixaban	65	15
Bupropion Xl	Bupropion Hcl	63	17
Carvedilol	Carvedilol	62	19
Wixela Inhub	Fluticasone Propion/Salmeterol	62	14
Abrysvo	Rsv Vacc, Pref A And Pref B/Pf	60	60
Duloxetine Hcl	Duloxetine Hcl	58	15
Pravastatin Sodium	Pravastatin Sodium	58	13
Synthroid	Levothyroxine Sodium	58	15
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	57	17
Doxycycline Hyclate	Doxycycline Hyclate	56	45
Olmesartan Medoxomil	Olmesartan Medoxomil	56	16
Triamcinolone Acetonide	Triamcinolone Acetonide	55	25
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	53	suppressed
Warfarin Sodium	Warfarin Sodium	53	13
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	52	20
Clonazepam	Clonazepam	51	suppressed
Fluticasone Propionate	Fluticasone Propionate	51	17
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	51	16
Ropinirole Hcl	Ropinirole Hcl	51	17
Diclofenac Sodium	Diclofenac Sodium	50	17
Amoxicillin	Amoxicillin	48	29
Atenolol	Atenolol	47	14
Citalopram Hbr	Citalopram Hydrobromide	46	14
Famotidine	Famotidine	46	14
Cefdinir	Cefdinir	45	37
Ezetimibe	Ezetimibe	45	14
Oxybutynin Chloride Er	Oxybutynin Chloride	45	suppressed
Alendronate Sodium	Alendronate Sodium	44	14
Fenofibrate	Fenofibrate	44	11
Hydroxyzine Hcl	Hydroxyzine Hcl	43	17
Vitamin D2	Ergocalciferol (Vitamin D2)	43	14
Fenofibrate	Fenofibrate Nanocrystallized	42	suppressed
Mirtazapine	Mirtazapine	42	suppressed
Valacyclovir	Valacyclovir Hcl	38	19
Celecoxib	Celecoxib	37	17
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	37	29
Donepezil Hcl	Donepezil Hcl	36	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	36	11
Dexlansoprazole Dr	Dexlansoprazole	33	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	33	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	32	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	31	suppressed
Ondansetron Hcl	Ondansetron Hcl	31	16
Bisoprolol-Hydrochlorothiazide	Bisoprolol/Hydrochlorothiazide	30	suppressed
Jardiance	Empagliflozin	30	suppressed
Clonidine Hcl	Clonidine Hcl	29	suppressed
Finasteride	Finasteride	29	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	28	suppressed
Januvia	Sitagliptin Phosphate	28	suppressed
Diazepam	Diazepam	27	suppressed
Mupirocin	Mupirocin	27	13
Nystatin	Nystatin	27	14
Spironolactone	Spironolactone	27	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	26	19
Glipizide	Glipizide	26	suppressed
Hydralazine Hcl	Hydralazine Hcl	26	suppressed
Lovastatin	Lovastatin	25	suppressed
Meclizine Hcl	Meclizine Hcl	25	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	25	25
Olmesartan-Hydrochlorothiazide	Olmesartan/Hydrochlorothiazide	24	suppressed
Raloxifene Hcl	Raloxifene Hcl	24	suppressed
Buspirone Hcl	Buspirone Hcl	23	suppressed
Fluconazole	Fluconazole	23	15
Linzess	Linaclotide	23	12
Olanzapine	Olanzapine	23	suppressed
Pregabalin	Pregabalin	23	suppressed
Ramipril	Ramipril	23	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	22	suppressed
Enalapril Maleate	Enalapril Maleate	22	suppressed
Boostrix Tdap	Diphth,pertuss(Acell),tet Vac	21	21
Oxybutynin Chloride	Oxybutynin Chloride	21	suppressed
Baclofen	Baclofen	20	suppressed
Levetiracetam	Levetiracetam	20	suppressed
Symbicort	Budesonide/Formoterol Fumarate	20	suppressed
Topiramate	Topiramate	20	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	19	suppressed
Mounjaro	Tirzepatide	19	suppressed
Paroxetine Hcl	Paroxetine Hcl	19	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	19	suppressed
Hydrocortisone	Hydrocortisone	18	suppressed
Xarelto	Rivaroxaban	18	suppressed
Clobetasol Propionate	Clobetasol Propionate	17	suppressed
Nifedipine Er	Nifedipine	17	suppressed
Ondansetron Odt	Ondansetron	17	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	17	suppressed
Solifenacin Succinate	Solifenacin Succinate	17	suppressed
Belsomra	Suvorexant	16	suppressed
Ibuprofen	Ibuprofen	16	suppressed
Ipratropium Bromide	Ipratropium Bromide	16	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	16	suppressed
Nebivolol Hcl	Nebivolol Hcl	16	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	16	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	15	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	15	suppressed
Estradiol	Estradiol	15	suppressed
Gemfibrozil	Gemfibrozil	15	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	15	suppressed
Prednisone	Prednisone	15	12
Modafinil	Modafinil	14	suppressed
Azelastine Hcl	Azelastine Hcl	13	suppressed
Benztropine Mesylate	Benztropine Mesylate	13	suppressed
Glimepiride	Glimepiride	13	suppressed
Irbesartan	Irbesartan	13	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	13	suppressed
Lidocaine	Lidocaine	13	suppressed
Liothyronine Sodium	Liothyronine Sodium	13	suppressed
Methotrexate	Methotrexate Sodium	13	suppressed
Risperidone	Risperidone	13	suppressed
Varenicline Tartrate	Varenicline Tartrate	13	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	12	suppressed
Eszopiclone	Eszopiclone	12	suppressed
Ezetimibe-Simvastatin	Ezetimibe/Simvastatin	12	suppressed
Gentamicin Sulfate	Gentamicin Sulfate	12	11
Ketoconazole	Ketoconazole	12	suppressed
Lansoprazole	Lansoprazole	12	suppressed
Memantine Hcl	Memantine Hcl	12	suppressed
Naproxen	Naproxen	12	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	12	suppressed
Rabeprazole Sodium	Rabeprazole Sodium	12	suppressed
Ramelteon	Ramelteon	12	suppressed
Terazosin Hcl	Terazosin Hcl	12	suppressed
Alfuzosin Hcl Er	Alfuzosin Hcl	11	suppressed
Febuxostat	Febuxostat	11	suppressed
Metronidazole	Metronidazole	11	suppressed
Myrbetriq	Mirabegron	11	suppressed
Naltrexone Hcl	Naltrexone Hcl	11	suppressed
Omega-3 Acid Ethyl Esters	Omega-3 Acid Ethyl Esters	11	suppressed
Shingrix	Varicella-Zoster Ge/As01b/Pf	11	suppressed
Ventolin Hfa	Albuterol Sulfate	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