Healthcare provider profile · identity verified

Randall S Haas, MD

Internal Medicine · MADISON, WI · NPI 1205881513

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	281	106
Omeprazole	Omeprazole	199	78
Amlodipine Besylate	Amlodipine Besylate	156	59
Losartan Potassium	Losartan Potassium	147	51
Simvastatin	Simvastatin	136	56
Lisinopril	Lisinopril	126	53
Levothyroxine Sodium	Levothyroxine Sodium	123	47
Metoprolol Succinate	Metoprolol Succinate	119	41
Hydrochlorothiazide	Hydrochlorothiazide	98	35
Tamsulosin Hcl	Tamsulosin Hcl	92	32
Pantoprazole Sodium	Pantoprazole Sodium	76	27
Fluticasone Propionate	Fluticasone Propionate	75	30
Furosemide	Furosemide	74	31
Metoprolol Tartrate	Metoprolol Tartrate	67	31
Glipizide Er	Glipizide	66	23
Eliquis	Apixaban	65	20
Mirtazapine	Mirtazapine	62	16
Atenolol	Atenolol	61	21
Metformin Hcl Er	Metformin Hcl	61	21
Rosuvastatin Calcium	Rosuvastatin Calcium	57	22
Allopurinol	Allopurinol	56	21
Gabapentin	Gabapentin	54	19
Metformin Hcl	Metformin Hcl	51	29
Benazepril Hcl	Benazepril Hcl	48	13
Januvia	Sitagliptin Phosphate	45	suppressed
Trazodone Hcl	Trazodone Hcl	44	18
Citalopram Hbr	Citalopram Hydrobromide	42	11
Sertraline Hcl	Sertraline Hcl	41	15
Warfarin Sodium	Warfarin Sodium	41	15
Doxazosin Mesylate	Doxazosin Mesylate	40	suppressed
Famotidine	Famotidine	38	13
Montelukast Sodium	Montelukast Sodium	38	suppressed
Xarelto	Rivaroxaban	37	suppressed
Finasteride	Finasteride	36	13
Escitalopram Oxalate	Escitalopram Oxalate	34	suppressed
Memantine Hcl	Memantine Hcl	34	suppressed
Potassium Chloride	Potassium Chloride	34	suppressed
Jardiance	Empagliflozin	32	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	32	16
Alendronate Sodium	Alendronate Sodium	31	13
Lovastatin	Lovastatin	31	14
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	31	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	30	11
Estradiol	Estradiol	29	11
Alfuzosin Hcl Er	Alfuzosin Hcl	28	suppressed
Enalapril Maleate	Enalapril Maleate	27	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	27	14
Diclofenac Sodium	Diclofenac Sodium	26	15
Bupropion Hcl Sr	Bupropion Hcl	25	suppressed
Carvedilol	Carvedilol	25	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	25	suppressed
Spironolactone	Spironolactone	24	suppressed
Tizanidine Hcl	Tizanidine Hcl	24	suppressed
Albuterol Sulfate Hfa	Albuterol Sulfate	23	11
Alprazolam	Alprazolam	22	11
Tolterodine Tartrate Er	Tolterodine Tartrate	22	suppressed
Clonidine Hcl	Clonidine Hcl	21	suppressed
Clopidogrel	Clopidogrel Bisulfate	21	suppressed
Donepezil Hcl	Donepezil Hcl	21	suppressed
Myrbetriq	Mirabegron	21	suppressed
Ozempic	Semaglutide	20	suppressed
Pravastatin Sodium	Pravastatin Sodium	20	suppressed
Tramadol Hcl	Tramadol Hcl	19	11
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	18	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	18	suppressed
Ventolin Hfa	Albuterol Sulfate	18	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	17	suppressed
Terazosin Hcl	Terazosin Hcl	17	suppressed
Carbamazepine	Carbamazepine	16	suppressed
Digoxin	Digoxin	16	suppressed
Trulicity	Dulaglutide	15	suppressed
Duloxetine Hcl	Duloxetine Hcl	14	suppressed
Ezetimibe	Ezetimibe	14	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	14	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	14	suppressed
Celecoxib	Celecoxib	13	suppressed
Clonazepam	Clonazepam	13	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	13	suppressed
Topiramate	Topiramate	13	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	13	suppressed
Farxiga	Dapagliflozin Propanediol	12	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	12	suppressed
Loperamide	Loperamide Hcl	12	suppressed
Acyclovir	Acyclovir	11	suppressed
Amiodarone Hcl	Amiodarone Hcl	11	suppressed
Dilt-Xr	Diltiazem Hcl	11	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	11	suppressed
Prednisone	Prednisone	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