Healthcare provider profile · identity verified

Michael F Johnstone, MD

Family Practice · BROWN DEER, WI · NPI 1982665394

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	492	152
Amlodipine Besylate	Amlodipine Besylate	327	95
Lisinopril	Lisinopril	318	89
Metoprolol Succinate	Metoprolol Succinate	277	89
Levothyroxine Sodium	Levothyroxine Sodium	257	74
Losartan Potassium	Losartan Potassium	225	67
Pantoprazole Sodium	Pantoprazole Sodium	167	55
Omeprazole	Omeprazole	164	43
Tamsulosin Hcl	Tamsulosin Hcl	152	39
Metformin Hcl	Metformin Hcl	143	43
Simvastatin	Simvastatin	132	40
Pravastatin Sodium	Pravastatin Sodium	122	37
Gabapentin	Gabapentin	119	34
Doxazosin Mesylate	Doxazosin Mesylate	116	37
Rosuvastatin Calcium	Rosuvastatin Calcium	115	37
Potassium Chloride	Potassium Chloride	111	35
Allopurinol	Allopurinol	103	31
Hydrochlorothiazide	Hydrochlorothiazide	96	26
Metoprolol Tartrate	Metoprolol Tartrate	93	33
Albuterol Sulfate Hfa	Albuterol Sulfate	85	31
Eliquis	Apixaban	82	19
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	80	26
Glipizide Er	Glipizide	71	19
Clopidogrel	Clopidogrel Bisulfate	69	15
Furosemide	Furosemide	63	19
Escitalopram Oxalate	Escitalopram Oxalate	61	13
Mirtazapine	Mirtazapine	57	16
Paroxetine Hcl	Paroxetine Hcl	55	14
Jardiance	Empagliflozin	51	17
Trazodone Hcl	Trazodone Hcl	51	13
Warfarin Sodium	Warfarin Sodium	51	13
Buspirone Hcl	Buspirone Hcl	49	suppressed
Carvedilol	Carvedilol	49	19
Finasteride	Finasteride	48	14
Metformin Hcl Er	Metformin Hcl	48	16
Glipizide	Glipizide	45	19
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	45	18
Baclofen	Baclofen	44	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	42	suppressed
Alendronate Sodium	Alendronate Sodium	40	suppressed
Sertraline Hcl	Sertraline Hcl	38	15
Trulicity	Dulaglutide	34	suppressed
Chlorthalidone	Chlorthalidone	32	11
Famotidine	Famotidine	32	suppressed
Glipizide-Metformin	Glipizide/Metformin Hcl	31	suppressed
Diclofenac Sodium	Diclofenac Sodium	30	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	30	suppressed
Donepezil Hcl	Donepezil Hcl	29	suppressed
Alprazolam	Alprazolam	27	suppressed
Levetiracetam	Levetiracetam	27	suppressed
Montelukast Sodium	Montelukast Sodium	27	11
Esomeprazole Magnesium	Esomeprazole Magnesium	26	suppressed
Spironolactone	Spironolactone	26	suppressed
Tramadol Hcl	Tramadol Hcl	26	suppressed
Fluticasone Propionate	Fluticasone Propionate	25	suppressed
Atenolol	Atenolol	24	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	24	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	24	suppressed
Breo Ellipta	Fluticasone/Vilanterol	23	suppressed
Clonazepam	Clonazepam	23	suppressed
Januvia	Sitagliptin Phosphate	23	suppressed
Xarelto	Rivaroxaban	23	suppressed
Lorazepam	Lorazepam	22	suppressed
Terazosin Hcl	Terazosin Hcl	22	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	21	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	21	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	20	suppressed
Lubiprostone	Lubiprostone	20	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	20	suppressed
Bumetanide	Bumetanide	19	suppressed
Ezetimibe	Ezetimibe	19	suppressed
Lamotrigine	Lamotrigine	19	suppressed
Prednisone	Prednisone	19	14
Ramipril	Ramipril	19	suppressed
Synthroid	Levothyroxine Sodium	19	suppressed
Divalproex Sodium	Divalproex Sodium	18	suppressed
Ibuprofen	Ibuprofen	18	suppressed
Memantine Hcl	Memantine Hcl	18	suppressed
Tizanidine Hcl	Tizanidine Hcl	18	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	17	suppressed
Duloxetine Hcl	Duloxetine Hcl	17	suppressed
Repaglinide	Repaglinide	17	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	16	suppressed
Acyclovir	Acyclovir	16	suppressed
Alfuzosin Hcl Er	Alfuzosin Hcl	16	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	16	suppressed
Risperidone	Risperidone	16	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	15	13
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	15	suppressed
Lovastatin	Lovastatin	15	suppressed
Amoxicillin	Amoxicillin	14	suppressed
Aripiprazole	Aripiprazole	14	suppressed
Glimepiride	Glimepiride	14	suppressed
Hydralazine Hcl	Hydralazine Hcl	14	suppressed
Tradjenta	Linagliptin	14	suppressed
Verapamil Er	Verapamil Hcl	14	suppressed
Testosterone	Testosterone	13	suppressed
Varenicline Tartrate	Varenicline Tartrate	13	suppressed
Amiodarone Hcl	Amiodarone Hcl	12	suppressed
Azithromycin	Azithromycin	12	11
Citalopram Hbr	Citalopram Hydrobromide	12	suppressed
Clonidine Hcl	Clonidine Hcl	12	suppressed
Indapamide	Indapamide	12	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	12	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	12	suppressed
Probenecid-Colchicine	Probenecid/Colchicine	12	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	12	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	12	suppressed
Zolpidem Tartrate Er	Zolpidem Tartrate	12	suppressed
Atenolol-Chlorthalidone	Atenolol/Chlorthalidone	11	suppressed
Benztropine Mesylate	Benztropine Mesylate	11	suppressed
Entresto	Sacubitril/Valsartan	11	suppressed
Lidocaine	Lidocaine	11	suppressed
Venlafaxine Hcl Er	Venlafaxine 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