Healthcare provider profile · identity verified

Mark E Peterson, MD

Internal Medicine · OSWEGO, IL · NPI 1114030384

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
Losartan Potassium	Losartan Potassium	611	172
Atorvastatin Calcium	Atorvastatin Calcium	533	157
Levothyroxine Sodium	Levothyroxine Sodium	528	122
Amlodipine Besylate	Amlodipine Besylate	414	116
Pantoprazole Sodium	Pantoprazole Sodium	410	121
Metformin Hcl	Metformin Hcl	335	99
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	316	65
Lisinopril	Lisinopril	308	90
Gabapentin	Gabapentin	275	80
Hydrochlorothiazide	Hydrochlorothiazide	271	76
Metoprolol Succinate	Metoprolol Succinate	265	76
Omeprazole	Omeprazole	263	74
Tamsulosin Hcl	Tamsulosin Hcl	261	70
Simvastatin	Simvastatin	250	74
Rosuvastatin Calcium	Rosuvastatin Calcium	213	65
Furosemide	Furosemide	202	61
Tramadol Hcl	Tramadol Hcl	176	45
Alprazolam	Alprazolam	163	45
Trazodone Hcl	Trazodone Hcl	156	34
Allopurinol	Allopurinol	147	44
Sertraline Hcl	Sertraline Hcl	147	34
Alendronate Sodium	Alendronate Sodium	144	40
Glimepiride	Glimepiride	142	40
Escitalopram Oxalate	Escitalopram Oxalate	134	26
Clonazepam	Clonazepam	131	18
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	126	34
Zolpidem Tartrate	Zolpidem Tartrate	123	30
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	119	31
Clopidogrel	Clopidogrel Bisulfate	114	34
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	114	28
Prednisone	Prednisone	114	52
Metoprolol Tartrate	Metoprolol Tartrate	95	30
Metformin Hcl Er	Metformin Hcl	88	27
Ozempic	Semaglutide	87	24
Glipizide Er	Glipizide	85	24
Bupropion Xl	Bupropion Hcl	84	20
Pravastatin Sodium	Pravastatin Sodium	84	25
Meloxicam	Meloxicam	82	29
Fluticasone Propionate	Fluticasone Propionate	81	32
Carvedilol	Carvedilol	80	25
Duloxetine Hcl	Duloxetine Hcl	76	22
Finasteride	Finasteride	74	19
Albuterol Sulfate Hfa	Albuterol Sulfate	73	43
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	64	20
Xarelto	Rivaroxaban	64	18
Eliquis	Apixaban	61	15
Warfarin Sodium	Warfarin Sodium	60	15
Potassium Chloride	Potassium Chloride	58	24
Mounjaro	Tirzepatide	56	13
Spironolactone	Spironolactone	54	17
Jardiance	Empagliflozin	51	11
Famotidine	Famotidine	50	13
Montelukast Sodium	Montelukast Sodium	49	14
Diclofenac Sodium	Diclofenac Sodium	48	13
Donepezil Hcl	Donepezil Hcl	47	14
Doxazosin Mesylate	Doxazosin Mesylate	47	13
Humalog Kwikpen U-100	Insulin Lispro	47	suppressed
Mirtazapine	Mirtazapine	47	14
Quetiapine Fumarate	Quetiapine Fumarate	47	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	45	11
Paroxetine Hcl	Paroxetine Hcl	44	suppressed
Enalapril Maleate	Enalapril Maleate	43	12
Lovastatin	Lovastatin	43	14
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	42	12
Tizanidine Hcl	Tizanidine Hcl	42	12
Atenolol	Atenolol	39	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	39	11
Meclizine Hcl	Meclizine Hcl	38	16
Oxybutynin Chloride Er	Oxybutynin Chloride	38	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	37	suppressed
Azithromycin	Azithromycin	37	34
Celecoxib	Celecoxib	37	suppressed
Ezetimibe	Ezetimibe	37	11
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	37	27
Nifedipine Er	Nifedipine	36	suppressed
Lorazepam	Lorazepam	35	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	35	suppressed
Cephalexin	Cephalexin	34	20
Glipizide	Glipizide	33	14
Isosorbide Mononitrate Er	Isosorbide Mononitrate	32	suppressed
Olanzapine	Olanzapine	32	suppressed
Ondansetron Odt	Ondansetron	32	13
Pregabalin	Pregabalin	32	11
Ciprofloxacin Hcl	Ciprofloxacin Hcl	31	20
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	31	24
Acetaminophen-Codeine	Acetaminophen With Codeine	30	11
Bupropion Hcl Sr	Bupropion Hcl	30	suppressed
Colchicine	Colchicine	30	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	29	24
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	29	13
Oxycodone Hcl	Oxycodone Hcl	29	suppressed
Propranolol Hcl Er	Propranolol Hcl	29	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	28	suppressed
Chlorthalidone	Chlorthalidone	28	suppressed
Citalopram Hbr	Citalopram Hydrobromide	28	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	28	suppressed
Bumetanide	Bumetanide	27	suppressed
Verapamil Er	Verapamil Hcl	26	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	25	suppressed
Synthroid	Levothyroxine Sodium	25	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	25	12
Trueplus Pen Needle	Pen Needle, Diabetic	25	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	25	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	25	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	24	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	24	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	23	suppressed
Ropinirole Hcl	Ropinirole Hcl	23	suppressed
Diazepam	Diazepam	22	11
Irbesartan	Irbesartan	22	suppressed
Valsartan	Valsartan	22	suppressed
Carbamazepine	Carbamazepine	21	suppressed
Hydralazine Hcl	Hydralazine Hcl	21	suppressed
Midodrine Hcl	Midodrine Hcl	21	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	21	suppressed
Valacyclovir	Valacyclovir Hcl	21	suppressed
Buspirone Hcl	Buspirone Hcl	20	suppressed
Propranolol Hcl	Propranolol Hcl	20	suppressed
Sildenafil Citrate	Sildenafil Citrate	20	suppressed
Baclofen	Baclofen	19	suppressed
Myrbetriq	Mirabegron	19	suppressed
Trulicity	Dulaglutide	19	suppressed
Cholestyramine	Cholestyramine (With Sugar)	18	suppressed
Fenofibrate	Fenofibrate	18	suppressed
Memantine Hcl	Memantine Hcl	18	suppressed
Methylphenidate Hcl	Methylphenidate Hcl	18	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	18	suppressed
Clonidine Hcl	Clonidine Hcl	17	suppressed
Humalog	Insulin Lispro	17	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	17	suppressed
Verapamil Sr	Verapamil Hcl	17	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	16	suppressed
Nystatin	Nystatin	16	12
Phenytoin Sodium Extended	Phenytoin Sodium Extended	16	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	16	suppressed
Januvia	Sitagliptin Phosphate	15	suppressed
Novolog Flexpen	Insulin Aspart	15	suppressed
Symbicort	Budesonide/Formoterol Fumarate	15	suppressed
Arnuity Ellipta	Fluticasone Furoate	14	suppressed
Latanoprost	Latanoprost	14	suppressed
Mupirocin	Mupirocin	14	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	14	suppressed
Ventolin Hfa	Albuterol Sulfate	14	suppressed
Azelastine Hcl	Azelastine Hcl	13	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	13	suppressed
Breo Ellipta	Fluticasone/Vilanterol	13	suppressed
Lamotrigine	Lamotrigine	13	suppressed
Methimazole	Methimazole	13	suppressed
Ondansetron Hcl	Ondansetron Hcl	13	suppressed
Amiodarone Hcl	Amiodarone Hcl	12	suppressed
Amoxicillin	Amoxicillin	12	11
Aripiprazole	Aripiprazole	12	suppressed
Droplet Pen Needle	Pen Needle, Diabetic	12	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	12	suppressed
Terazosin Hcl	Terazosin Hcl	12	suppressed
Topiramate	Topiramate	12	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	12	suppressed
Fluconazole	Fluconazole	11	suppressed
Lansoprazole	Lansoprazole	11	suppressed
Levetiracetam	Levetiracetam	11	suppressed
Premarin	Estrogens, Conjugated	11	suppressed
Tresiba Flextouch U-100	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

Full methodology · Questions & answers · Report a possible error