Healthcare provider profile · identity verified

Thomas Shiffler, MD

Internal Medicine · MADISON, WI · NPI 1164561171

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	447	107
Rosuvastatin Calcium	Rosuvastatin Calcium	344	99
Amlodipine Besylate	Amlodipine Besylate	278	66
Lisinopril	Lisinopril	245	61
Eliquis	Apixaban	231	43
Levothyroxine Sodium	Levothyroxine Sodium	228	55
Losartan Potassium	Losartan Potassium	201	52
Omeprazole	Omeprazole	151	36
Gabapentin	Gabapentin	132	40
Metoprolol Succinate	Metoprolol Succinate	132	34
Simvastatin	Simvastatin	121	34
Famotidine	Famotidine	118	24
Tamsulosin Hcl	Tamsulosin Hcl	117	38
Allopurinol	Allopurinol	113	23
Pantoprazole Sodium	Pantoprazole Sodium	110	22
Carvedilol	Carvedilol	107	28
Fluticasone Propionate	Fluticasone Propionate	97	31
Metformin Hcl Er	Metformin Hcl	94	25
Sertraline Hcl	Sertraline Hcl	92	17
Furosemide	Furosemide	79	21
Olmesartan Medoxomil	Olmesartan Medoxomil	71	19
Oxycodone Hcl	Oxycodone Hcl	71	18
Albuterol Sulfate Hfa	Albuterol Sulfate	69	21
Metoprolol Tartrate	Metoprolol Tartrate	64	suppressed
Jardiance	Empagliflozin	60	12
Fluoxetine Hcl	Fluoxetine Hcl	56	13
Januvia	Sitagliptin Phosphate	55	suppressed
Hydrochlorothiazide	Hydrochlorothiazide	54	16
Lorazepam	Lorazepam	54	suppressed
Metformin Hcl	Metformin Hcl	53	16
Nifedipine Er	Nifedipine	53	18
Zolpidem Tartrate	Zolpidem Tartrate	53	14
Potassium Chloride	Potassium Chloride	52	16
Trazodone Hcl	Trazodone Hcl	52	14
Clonazepam	Clonazepam	51	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	51	18
Olanzapine	Olanzapine	45	suppressed
Alendronate Sodium	Alendronate Sodium	43	suppressed
Chlorthalidone	Chlorthalidone	43	11
Duloxetine Hcl	Duloxetine Hcl	43	suppressed
Finasteride	Finasteride	42	11
Sumatriptan Succinate	Sumatriptan Succinate	40	suppressed
Ezetimibe	Ezetimibe	38	12
Spironolactone	Spironolactone	37	11
Baclofen	Baclofen	36	suppressed
Lansoprazole	Lansoprazole	35	suppressed
Mirtazapine	Mirtazapine	35	suppressed
Fentanyl	Fentanyl	33	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	33	11
Quetiapine Fumarate	Quetiapine Fumarate	33	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	32	suppressed
Atenolol	Atenolol	31	suppressed
Azithromycin	Azithromycin	31	17
Valsartan	Valsartan	31	suppressed
Citalopram Hbr	Citalopram Hydrobromide	30	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	28	suppressed
Alprazolam	Alprazolam	27	suppressed
Fenofibrate	Fenofibrate,micronized	27	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	27	20
Amoxicillin	Amoxicillin	26	13
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	26	15
Clopidogrel	Clopidogrel Bisulfate	26	suppressed
Synthroid	Levothyroxine Sodium	26	suppressed
Enalapril Maleate	Enalapril Maleate	24	suppressed
Nystatin	Nystatin	24	suppressed
Pravastatin Sodium	Pravastatin Sodium	24	suppressed
Tramadol Hcl	Tramadol Hcl	24	suppressed
Bydureon Bcise	Exenatide Microspheres	23	suppressed
Colchicine	Colchicine	23	suppressed
Bupropion Hcl Sr	Bupropion Hcl	22	suppressed
Valacyclovir	Valacyclovir Hcl	22	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	21	suppressed
Bupropion Xl	Bupropion Hcl	21	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	20	suppressed
Irbesartan	Irbesartan	20	suppressed
Ozempic	Semaglutide	20	suppressed
Warfarin Sodium	Warfarin Sodium	20	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	19	13
Prednisone	Prednisone	19	suppressed
Arnuity Ellipta	Fluticasone Furoate	18	suppressed
Morphine Sulfate Er	Morphine Sulfate	18	suppressed
Pregabalin	Pregabalin	18	suppressed
Rybelsus	Semaglutide	18	suppressed
Ventolin Hfa	Albuterol Sulfate	18	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	17	suppressed
Pulmicort Flexhaler	Budesonide	17	suppressed
Torsemide	Torsemide	17	suppressed
Diclofenac Sodium	Diclofenac Sodium	16	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	16	suppressed
Montelukast Sodium	Montelukast Sodium	16	suppressed
Diazepam	Diazepam	15	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	15	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	15	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	15	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	14	suppressed
Entresto	Sacubitril/Valsartan	14	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	14	suppressed
Nitroglycerin	Nitroglycerin	14	suppressed
Pilocarpine Hcl	Pilocarpine Hcl	14	suppressed
Topiramate	Topiramate	14	suppressed
Advair Diskus	Fluticasone Propion/Salmeterol	13	suppressed
Alfuzosin Hcl Er	Alfuzosin Hcl	13	suppressed
Benazepril Hcl	Benazepril Hcl	13	suppressed
Clotrimazole	Clotrimazole	13	suppressed
Risperidone	Risperidone	13	suppressed
Sucralfate	Sucralfate	13	suppressed
Terazosin Hcl	Terazosin Hcl	13	suppressed
Xarelto	Rivaroxaban	13	suppressed
Bumetanide	Bumetanide	12	suppressed
Digoxin	Digoxin	12	suppressed
Droxidopa	Droxidopa	12	suppressed
Lovastatin	Lovastatin	12	suppressed
Meloxicam	Meloxicam	12	suppressed
Methylphenidate Er	Methylphenidate Hcl	12	suppressed
Myrbetriq	Mirabegron	12	suppressed
Propranolol Hcl	Propranolol Hcl	12	suppressed
Ropinirole Hcl	Ropinirole Hcl	12	suppressed
Anastrozole	Anastrozole	11	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	11	suppressed
Methadone Hcl	Methadone Hcl	11	suppressed
Trulicity	Dulaglutide	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