Healthcare provider profile · identity verified

David G Kass, DO

Family Practice · SUN PRAIRIE, WI · NPI 1336108307

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	820	201
Omeprazole	Omeprazole	478	115
Losartan Potassium	Losartan Potassium	332	85
Amlodipine Besylate	Amlodipine Besylate	331	94
Lisinopril	Lisinopril	313	84
Tamsulosin Hcl	Tamsulosin Hcl	257	69
Metoprolol Succinate	Metoprolol Succinate	251	62
Levothyroxine Sodium	Levothyroxine Sodium	246	51
Hydrochlorothiazide	Hydrochlorothiazide	236	62
Simvastatin	Simvastatin	230	61
Metformin Hcl	Metformin Hcl	225	55
Metoprolol Tartrate	Metoprolol Tartrate	214	53
Gabapentin	Gabapentin	208	49
Metformin Hcl Er	Metformin Hcl	200	47
Furosemide	Furosemide	191	47
Warfarin Sodium	Warfarin Sodium	182	29
Pantoprazole Sodium	Pantoprazole Sodium	155	37
Rosuvastatin Calcium	Rosuvastatin Calcium	146	37
Allopurinol	Allopurinol	135	36
Eliquis	Apixaban	126	26
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	114	19
Ozempic	Semaglutide	111	17
Trazodone Hcl	Trazodone Hcl	111	35
Fluticasone Propionate	Fluticasone Propionate	109	48
Sertraline Hcl	Sertraline Hcl	106	20
Atenolol	Atenolol	96	24
Escitalopram Oxalate	Escitalopram Oxalate	96	27
Carvedilol	Carvedilol	79	19
Glipizide Er	Glipizide	78	21
Citalopram Hbr	Citalopram Hydrobromide	76	17
Clopidogrel	Clopidogrel Bisulfate	74	22
Finasteride	Finasteride	71	19
Spironolactone	Spironolactone	66	16
Enalapril Maleate	Enalapril Maleate	63	16
Famotidine	Famotidine	61	20
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	60	20
Xarelto	Rivaroxaban	60	14
Glipizide	Glipizide	59	17
Prednisone	Prednisone	59	36
Montelukast Sodium	Montelukast Sodium	58	15
Alprazolam	Alprazolam	56	suppressed
Oxycodone Hcl	Oxycodone Hcl	52	11
Potassium Chloride	Potassium Chloride	51	13
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	50	suppressed
Tizanidine Hcl	Tizanidine Hcl	50	13
Benazepril Hcl	Benazepril Hcl	48	16
Duloxetine Hcl	Duloxetine Hcl	47	15
Quetiapine Fumarate	Quetiapine Fumarate	47	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	46	13
Albuterol Sulfate Hfa	Albuterol Sulfate	45	26
Triamcinolone Acetonide	Triamcinolone Acetonide	45	25
Bupropion Xl	Bupropion Hcl	44	12
Fluoxetine Hcl	Fluoxetine Hcl	44	13
Lorazepam	Lorazepam	44	14
Trulicity	Dulaglutide	44	suppressed
Cephalexin	Cephalexin	42	26
Venlafaxine Hcl Er	Venlafaxine Hcl	42	13
Amoxicillin	Amoxicillin	41	23
Clonazepam	Clonazepam	40	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	40	11
Tramadol Hcl	Tramadol Hcl	37	12
Morphine Sulfate Er	Morphine Sulfate	35	suppressed
Pravastatin Sodium	Pravastatin Sodium	33	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	32	suppressed
Diazepam	Diazepam	31	suppressed
Mounjaro	Tirzepatide	31	suppressed
Ventolin Hfa	Albuterol Sulfate	31	12
Alendronate Sodium	Alendronate Sodium	29	suppressed
Ezetimibe	Ezetimibe	28	suppressed
Loperamide	Loperamide Hcl	28	suppressed
Meloxicam	Meloxicam	28	11
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	28	suppressed
Baclofen	Baclofen	27	suppressed
Irbesartan	Irbesartan	25	suppressed
Ketoconazole	Ketoconazole	25	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	24	15
Arnuity Ellipta	Fluticasone Furoate	24	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	24	suppressed
Bupropion Hcl Sr	Bupropion Hcl	23	suppressed
Hydrocortisone	Hydrocortisone	23	13
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	23	suppressed
Ibuprofen	Ibuprofen	22	suppressed
Azelastine Hcl	Azelastine Hcl	21	11
Hydralazine Hcl	Hydralazine Hcl	21	suppressed
Tresiba Flextouch U-200	Insulin Degludec	21	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	20	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	20	suppressed
Azithromycin	Azithromycin	19	14
Buspirone Hcl	Buspirone Hcl	19	suppressed
Clonidine Hcl	Clonidine Hcl	19	suppressed
Propranolol Hcl Er	Propranolol Hcl	19	suppressed
Diclofenac Sodium	Diclofenac Sodium	18	suppressed
Rybelsus	Semaglutide	18	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	17	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	17	suppressed
Donepezil Hcl	Donepezil Hcl	17	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	17	suppressed
Labetalol Hcl	Labetalol Hcl	17	suppressed
Novolog Flexpen	Insulin Aspart	17	suppressed
Olanzapine	Olanzapine	17	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	17	suppressed
Bumetanide	Bumetanide	16	suppressed
Celecoxib	Celecoxib	16	suppressed
Incruse Ellipta	Umeclidinium Bromide	16	suppressed
Ropinirole Hcl	Ropinirole Hcl	16	suppressed
Terazosin Hcl	Terazosin Hcl	16	suppressed
Alfuzosin Hcl Er	Alfuzosin Hcl	15	suppressed
Nitroglycerin	Nitroglycerin	15	15
Amitriptyline Hcl	Amitriptyline Hcl	14	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	14	suppressed
Chlorthalidone	Chlorthalidone	13	suppressed
Eszopiclone	Eszopiclone	13	suppressed
Lamotrigine	Lamotrigine	13	suppressed
Meclizine Hcl	Meclizine Hcl	13	suppressed
Pregabalin	Pregabalin	13	suppressed
Tresiba Flextouch U-100	Insulin Degludec	13	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	12	suppressed
Humalog Kwikpen U-100	Insulin Lispro	12	suppressed
Lovastatin	Lovastatin	12	suppressed
Ultra-Fine Nano Pen Needle	Pen Needle, Diabetic	12	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	11	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	11	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	11	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	11	suppressed
Jardiance	Empagliflozin	11	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	11	suppressed
Synthroid	Levothyroxine Sodium	11	suppressed
Temazepam	Temazepam	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