Healthcare provider profile · identity verified

Thomas Tackman, MD

Internal Medicine · FORT ATKINSON, WI · NPI 1902802416

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
Omeprazole	Omeprazole	792	187
Levothyroxine Sodium	Levothyroxine Sodium	746	144
Atorvastatin Calcium	Atorvastatin Calcium	717	202
Amlodipine Besylate	Amlodipine Besylate	665	169
Metoprolol Succinate	Metoprolol Succinate	501	130
Lisinopril	Lisinopril	496	134
Tamsulosin Hcl	Tamsulosin Hcl	479	121
Gabapentin	Gabapentin	414	110
Famotidine	Famotidine	311	61
Sertraline Hcl	Sertraline Hcl	298	73
Losartan Potassium	Losartan Potassium	292	73
Metformin Hcl Er	Metformin Hcl	286	81
Metoprolol Tartrate	Metoprolol Tartrate	282	74
Simvastatin	Simvastatin	279	85
Eliquis	Apixaban	272	57
Metformin Hcl	Metformin Hcl	268	69
Furosemide	Furosemide	247	63
Hydrochlorothiazide	Hydrochlorothiazide	223	66
Finasteride	Finasteride	199	36
Trazodone Hcl	Trazodone Hcl	181	52
Rosuvastatin Calcium	Rosuvastatin Calcium	170	50
Pantoprazole Sodium	Pantoprazole Sodium	169	40
Potassium Chloride	Potassium Chloride	166	29
Warfarin Sodium	Warfarin Sodium	164	33
Allopurinol	Allopurinol	157	47
Jardiance	Empagliflozin	148	32
Fluticasone Propionate	Fluticasone Propionate	144	53
Spironolactone	Spironolactone	142	32
Albuterol Sulfate Hfa	Albuterol Sulfate	132	43
Celecoxib	Celecoxib	127	29
Lovastatin	Lovastatin	112	27
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	107	37
Clopidogrel	Clopidogrel Bisulfate	103	28
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	94	24
Carbidopa-Levodopa	Carbidopa/Levodopa	90	24
Donepezil Hcl	Donepezil Hcl	87	21
Oxybutynin Chloride Er	Oxybutynin Chloride	83	17
Carvedilol	Carvedilol	77	19
Paroxetine Hcl	Paroxetine Hcl	76	19
Prednisone	Prednisone	76	30
Duloxetine Hcl	Duloxetine Hcl	74	17
Fluoxetine Hcl	Fluoxetine Hcl	73	17
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	73	21
Glipizide Er	Glipizide	72	18
Alprazolam	Alprazolam	70	16
Clonidine Hcl	Clonidine Hcl	65	suppressed
Memantine Hcl	Memantine Hcl	64	suppressed
Pravastatin Sodium	Pravastatin Sodium	62	20
Propranolol Hcl	Propranolol Hcl	59	suppressed
Lamotrigine	Lamotrigine	57	suppressed
Montelukast Sodium	Montelukast Sodium	57	15
Doxycycline Hyclate	Doxycycline Hyclate	56	36
Ozempic	Semaglutide	54	suppressed
Alendronate Sodium	Alendronate Sodium	53	19
Sucralfate	Sucralfate	53	15
Atenolol	Atenolol	50	14
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	50	22
Citalopram Hbr	Citalopram Hydrobromide	49	12
Rybelsus	Semaglutide	48	12
Trulicity	Dulaglutide	48	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	48	12
Zolpidem Tartrate	Zolpidem Tartrate	48	12
Olanzapine	Olanzapine	47	suppressed
Clonazepam	Clonazepam	46	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	46	18
Xarelto	Rivaroxaban	46	14
Amitriptyline Hcl	Amitriptyline Hcl	45	suppressed
Carbamazepine	Carbamazepine	44	suppressed
Digoxin	Digoxin	44	suppressed
Benazepril Hcl	Benazepril Hcl	42	12
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	41	16
Lorazepam	Lorazepam	41	11
Oxybutynin Chloride	Oxybutynin Chloride	41	suppressed
Baclofen	Baclofen	40	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	40	12
Ketoconazole	Ketoconazole	39	25
Pioglitazone Hcl	Pioglitazone Hcl	38	suppressed
Diclofenac Sodium	Diclofenac Sodium	36	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	36	suppressed
Bupropion Xl	Bupropion Hcl	35	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	34	suppressed
Pregabalin	Pregabalin	34	suppressed
Risperidone	Risperidone	34	suppressed
Scopolamine	Scopolamine	32	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	30	11
Tramadol Hcl	Tramadol Hcl	29	12
Verapamil Er	Verapamil Hcl	29	suppressed
Divalproex Sodium Er	Divalproex Sodium	28	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	28	suppressed
Nifedipine Er	Nifedipine	28	suppressed
Nystatin	Nystatin	28	11
Insulin Lispro Kwikpen U-100	Insulin Lispro	27	suppressed
Terazosin Hcl	Terazosin Hcl	27	suppressed
Clobetasol Propionate	Clobetasol Propionate	26	18
Ezetimibe	Ezetimibe	26	suppressed
Farxiga	Dapagliflozin Propanediol	26	suppressed
Glipizide	Glipizide	26	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	26	suppressed
Hydralazine Hcl	Hydralazine Hcl	25	12
Methylprednisolone	Methylprednisolone	25	22
Azithromycin	Azithromycin	24	22
Novolog Flexpen	Insulin Aspart	24	suppressed
Raloxifene Hcl	Raloxifene Hcl	24	suppressed
Enalapril Maleate	Enalapril Maleate	23	suppressed
Folic Acid	Folic Acid	23	suppressed
Propranolol Hcl Er	Propranolol Hcl	23	suppressed
Arnuity Ellipta	Fluticasone Furoate	22	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	22	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	22	18
Nitroglycerin	Nitroglycerin	22	17
Ondansetron Hcl	Ondansetron Hcl	22	11
Ropinirole Hcl	Ropinirole Hcl	22	suppressed
Valsartan	Valsartan	22	suppressed
Bumetanide	Bumetanide	21	suppressed
Nitrofurantoin	Nitrofurantoin Macrocrystal	21	suppressed
Calcitonin-Salmon	Calcitonin,salmon,synthetic	20	suppressed
Colchicine	Colchicine	20	suppressed
Fenofibrate	Fenofibrate,micronized	20	suppressed
Gemfibrozil	Gemfibrozil	20	suppressed
Humalog Kwikpen U-100	Insulin Lispro	20	suppressed
Januvia	Sitagliptin Phosphate	20	suppressed
Levetiracetam	Levetiracetam	20	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	20	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	20	suppressed
Advair Hfa	Fluticasone Propion/Salmeterol	19	suppressed
Isosorbide Dinitrate	Isosorbide Dinitrate	19	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	19	suppressed
Ultra-Fine Micro Pen Needle	Pen Needle, Diabetic	19	suppressed
Valacyclovir	Valacyclovir Hcl	19	suppressed
Alfuzosin Hcl Er	Alfuzosin Hcl	18	suppressed
Loperamide	Loperamide Hcl	18	suppressed
Amoxicillin	Amoxicillin	17	15
Buspirone Hcl	Buspirone Hcl	17	suppressed
Chlorthalidone	Chlorthalidone	17	suppressed
Colestipol Hcl	Colestipol Hcl	17	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	17	suppressed
Ibuprofen	Ibuprofen	17	11
Mirtazapine	Mirtazapine	17	suppressed
Anastrozole	Anastrozole	16	suppressed
Benazepril-Hydrochlorothiazide	Benazepril/Hydrochlorothiazide	16	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	16	suppressed
Estradiol	Estradiol	16	suppressed
Nyamyc	Nystatin	16	suppressed
Dilt-Xr	Diltiazem Hcl	15	suppressed
Fluticasone Propionate Hfa	Fluticasone Propionate	15	suppressed
Ipratropium Bromide	Ipratropium Bromide	15	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	15	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	15	suppressed
Acyclovir	Acyclovir	14	suppressed
Chlorhexidine Gluconate	Chlorhexidine Gluconate	14	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	14	suppressed
Glimepiride	Glimepiride	14	suppressed
Humulin 70/30 Kwikpen	Insulin Nph Hum/Reg Insulin Hm	14	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	13	suppressed
Bisoprolol-Hydrochlorothiazide	Bisoprolol/Hydrochlorothiazide	13	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	13	suppressed
Levemir Flexpen	Insulin Detemir	13	suppressed
Mycophenolate Mofetil	Mycophenolate Mofetil	13	suppressed
Symbicort	Budesonide/Formoterol Fumarate	13	suppressed
Topiramate	Topiramate	13	suppressed
Incruse Ellipta	Umeclidinium Bromide	12	suppressed
Metronidazole	Metronidazole	12	suppressed
Naltrexone Hcl	Naltrexone Hcl	12	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	12	suppressed
Synthroid	Levothyroxine Sodium	12	suppressed
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	11	suppressed
Glycopyrrolate	Glycopyrrolate	11	suppressed
Lidocaine	Lidocaine	11	suppressed
Qvar Redihaler	Beclomethasone Dipropionate	11	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	11	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	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