Healthcare provider profile · identity verified

John F Herath, MD

Internal Medicine · ONALASKA, WI · NPI 1740286913

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	601	148
Lisinopril	Lisinopril	493	136
Omeprazole	Omeprazole	463	111
Metoprolol Succinate	Metoprolol Succinate	360	94
Simvastatin	Simvastatin	307	81
Amlodipine Besylate	Amlodipine Besylate	296	71
Levothyroxine Sodium	Levothyroxine Sodium	285	77
Losartan Potassium	Losartan Potassium	284	82
Tamsulosin Hcl	Tamsulosin Hcl	210	54
Eliquis	Apixaban	208	53
Metoprolol Tartrate	Metoprolol Tartrate	199	57
Hydrochlorothiazide	Hydrochlorothiazide	184	52
Gabapentin	Gabapentin	165	39
Metformin Hcl Er	Metformin Hcl	159	46
Metformin Hcl	Metformin Hcl	157	35
Allopurinol	Allopurinol	149	34
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	143	23
Warfarin Sodium	Warfarin Sodium	140	24
Furosemide	Furosemide	129	41
Tramadol Hcl	Tramadol Hcl	127	26
Sertraline Hcl	Sertraline Hcl	123	33
Trulicity	Dulaglutide	121	18
Pantoprazole Sodium	Pantoprazole Sodium	116	27
Albuterol Sulfate Hfa	Albuterol Sulfate	110	42
Prednisone	Prednisone	98	45
Glimepiride	Glimepiride	97	24
Pravastatin Sodium	Pravastatin Sodium	97	19
Clopidogrel	Clopidogrel Bisulfate	94	21
Lorazepam	Lorazepam	94	19
Nitroglycerin	Nitroglycerin	94	52
Finasteride	Finasteride	86	20
Rosuvastatin Calcium	Rosuvastatin Calcium	70	22
Chlorthalidone	Chlorthalidone	66	15
Jardiance	Empagliflozin	65	11
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	63	20
Zolpidem Tartrate	Zolpidem Tartrate	62	12
Fluticasone Propionate	Fluticasone Propionate	61	30
Alprazolam	Alprazolam	60	16
Atenolol	Atenolol	58	14
Trazodone Hcl	Trazodone Hcl	58	11
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	55	13
Xarelto	Rivaroxaban	53	suppressed
Farxiga	Dapagliflozin Propanediol	52	suppressed
Paroxetine Hcl	Paroxetine Hcl	48	13
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	47	14
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	45	15
Potassium Chloride	Potassium Chloride	45	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	44	11
Ramipril	Ramipril	41	suppressed
Citalopram Hbr	Citalopram Hydrobromide	39	suppressed
Breo Ellipta	Fluticasone/Vilanterol	38	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	38	20
Ezetimibe	Ezetimibe	38	suppressed
Bumetanide	Bumetanide	35	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	34	suppressed
Clonazepam	Clonazepam	32	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	32	14
Spironolactone	Spironolactone	32	suppressed
Memantine Hcl	Memantine Hcl	30	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	30	suppressed
Famotidine	Famotidine	29	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	29	suppressed
Buspirone Hcl	Buspirone Hcl	28	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	28	suppressed
Oxycodone Hcl	Oxycodone Hcl	28	suppressed
Ozempic	Semaglutide	28	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	27	suppressed
Mirtazapine	Mirtazapine	27	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	27	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	27	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	26	suppressed
Bupropion Hcl Sr	Bupropion Hcl	26	suppressed
Carvedilol	Carvedilol	26	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	25	suppressed
Acyclovir	Acyclovir	24	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	24	suppressed
Gemfibrozil	Gemfibrozil	24	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	24	18
Amoxicillin	Amoxicillin	23	15
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	23	suppressed
Fenofibrate	Fenofibrate	22	suppressed
Glipizide Er	Glipizide	22	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	22	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	22	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	21	suppressed
Duloxetine Hcl	Duloxetine Hcl	21	suppressed
Diazepam	Diazepam	20	suppressed
Digoxin	Digoxin	20	suppressed
Diclofenac Sodium	Diclofenac Sodium	19	suppressed
Dilt-Xr	Diltiazem Hcl	19	suppressed
Glipizide	Glipizide	19	suppressed
Lovastatin	Lovastatin	19	suppressed
Verapamil Er	Verapamil Hcl	19	suppressed
Nifedipine Er	Nifedipine	18	suppressed
Hydralazine Hcl	Hydralazine Hcl	17	suppressed
Novolog Flexpen	Insulin Aspart	17	suppressed
Alendronate Sodium	Alendronate Sodium	16	suppressed
Nystatin	Nystatin	16	suppressed
Rizatriptan	Rizatriptan Benzoate	16	suppressed
Klor-Con M20	Potassium Chloride	15	suppressed
Loperamide	Loperamide Hcl	15	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	15	suppressed
Colchicine	Colchicine	14	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	14	suppressed
Januvia	Sitagliptin Phosphate	14	suppressed
M-Natal Plus	Pnv,calcium 72/Iron/Folic Acid	14	suppressed
Montelukast Sodium	Montelukast Sodium	14	suppressed
Premarin	Estrogens, Conjugated	14	suppressed
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	13	suppressed
Baclofen	Baclofen	13	suppressed
Cephalexin	Cephalexin	13	suppressed
Donepezil Hcl	Donepezil Hcl	13	suppressed
Indomethacin	Indomethacin	13	suppressed
Methotrexate	Methotrexate Sodium	13	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	13	suppressed
Potassium Citrate Er	Potassium Citrate	13	suppressed
Pregabalin	Pregabalin	13	suppressed
Synthroid	Levothyroxine Sodium	13	suppressed
Terazosin Hcl	Terazosin Hcl	13	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	12	suppressed
Cilostazol	Cilostazol	12	suppressed
Entresto	Sacubitril/Valsartan	12	suppressed
Ezetimibe-Simvastatin	Ezetimibe/Simvastatin	12	suppressed
Folic Acid	Folic Acid	12	suppressed
Methocarbamol	Methocarbamol	12	suppressed
Myrbetriq	Mirabegron	12	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	12	suppressed
Azathioprine	Azathioprine	11	suppressed
Azithromycin	Azithromycin	11	suppressed
Breyna	Budesonide/Formoterol Fumarate	11	suppressed
Brilinta	Ticagrelor	11	suppressed
Bupropion Xl	Bupropion Hcl	11	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	11	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	11	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	11	suppressed
Prochlorperazine Maleate	Prochlorperazine Maleate	11	suppressed
Risperidone	Risperidone	11	suppressed
Sildenafil Citrate	Sildenafil Citrate	11	suppressed
Tolterodine Tartrate	Tolterodine Tartrate	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