Healthcare provider profile · identity verified

Robert B Macnack, M.D.

Family Practice · MONROE, WI · NPI 1881826790

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	486	119
Lisinopril	Lisinopril	384	100
Amlodipine Besylate	Amlodipine Besylate	323	73
Omeprazole	Omeprazole	285	74
Levothyroxine Sodium	Levothyroxine Sodium	244	54
Gabapentin	Gabapentin	229	44
Furosemide	Furosemide	191	35
Metformin Hcl	Metformin Hcl	188	34
Eliquis	Apixaban	182	25
Hydrochlorothiazide	Hydrochlorothiazide	173	40
Rosuvastatin Calcium	Rosuvastatin Calcium	169	42
Losartan Potassium	Losartan Potassium	165	36
Metoprolol Succinate	Metoprolol Succinate	159	38
Pantoprazole Sodium	Pantoprazole Sodium	157	31
Tamsulosin Hcl	Tamsulosin Hcl	142	33
Metformin Hcl Er	Metformin Hcl	127	32
Trazodone Hcl	Trazodone Hcl	124	31
Simvastatin	Simvastatin	120	30
Mirtazapine	Mirtazapine	110	21
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	103	22
Sertraline Hcl	Sertraline Hcl	100	27
Donepezil Hcl	Donepezil Hcl	98	16
Carvedilol	Carvedilol	96	13
Spironolactone	Spironolactone	93	18
Metoprolol Tartrate	Metoprolol Tartrate	91	21
Duloxetine Hcl	Duloxetine Hcl	90	15
Potassium Chloride	Potassium Chloride	85	18
Citalopram Hbr	Citalopram Hydrobromide	83	19
Warfarin Sodium	Warfarin Sodium	82	21
Prednisone	Prednisone	81	23
Fluticasone Propionate	Fluticasone Propionate	78	28
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	77	19
Atenolol	Atenolol	74	19
Finasteride	Finasteride	72	13
Ozempic	Semaglutide	67	13
Quetiapine Fumarate	Quetiapine Fumarate	62	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	61	suppressed
Glipizide	Glipizide	61	12
Jardiance	Empagliflozin	61	suppressed
Xarelto	Rivaroxaban	61	suppressed
Allopurinol	Allopurinol	60	14
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	60	16
Ezetimibe	Ezetimibe	56	15
Famotidine	Famotidine	54	12
Oxycodone Hcl	Oxycodone Hcl	54	12
Isosorbide Mononitrate Er	Isosorbide Mononitrate	52	suppressed
Januvia	Sitagliptin Phosphate	51	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	51	27
Pravastatin Sodium	Pravastatin Sodium	49	11
Tramadol Hcl	Tramadol Hcl	49	11
Lovastatin	Lovastatin	45	suppressed
Hydralazine Hcl	Hydralazine Hcl	44	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	43	suppressed
Baclofen	Baclofen	40	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	40	18
Alendronate Sodium	Alendronate Sodium	39	suppressed
Memantine Hcl	Memantine Hcl	39	suppressed
Propranolol Hcl	Propranolol Hcl	39	suppressed
Clopidogrel	Clopidogrel Bisulfate	37	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	37	suppressed
Lorazepam	Lorazepam	37	13
Nystatin	Nystatin	37	16
Alprazolam	Alprazolam	36	suppressed
Glipizide Er	Glipizide	36	11
Methenamine Hippurate	Methenamine Hippurate	36	suppressed
Myrbetriq	Mirabegron	36	suppressed
Paroxetine Hcl	Paroxetine Hcl	36	suppressed
Bupropion Xl	Bupropion Hcl	35	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	35	suppressed
Albuterol Sulfate Hfa	Albuterol Sulfate	33	13
Celecoxib	Celecoxib	33	suppressed
Farxiga	Dapagliflozin Propanediol	33	suppressed
Fentanyl	Fentanyl	33	suppressed
Diazepam	Diazepam	32	suppressed
Latanoprost	Latanoprost	30	suppressed
Meclizine Hcl	Meclizine Hcl	29	suppressed
Meloxicam	Meloxicam	29	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	29	suppressed
Trulicity	Dulaglutide	28	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	27	suppressed
Montelukast Sodium	Montelukast Sodium	27	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	27	suppressed
Chlorthalidone	Chlorthalidone	26	suppressed
Levetiracetam	Levetiracetam	25	suppressed
Ropinirole Hcl	Ropinirole Hcl	25	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	24	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	23	18
Gavilyte-C	Peg3350/Sod Sulf,bicarb,cl/Kcl	22	22
Diclofenac Sodium	Diclofenac Sodium	20	suppressed
Ketoconazole	Ketoconazole	20	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	20	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	19	suppressed
Morphine Sulfate	Morphine Sulfate	19	suppressed
Timolol Maleate	Timolol Maleate	19	suppressed
Benazepril Hcl	Benazepril Hcl	18	suppressed
Fenofibrate	Fenofibrate,micronized	18	suppressed
Morphine Sulfate Er	Morphine Sulfate	18	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	18	suppressed
Cephalexin	Cephalexin	16	suppressed
Fenofibrate	Fenofibrate	16	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	16	suppressed
Tresiba Flextouch U-200	Insulin Degludec	16	suppressed
Clonazepam	Clonazepam	15	suppressed
Ipratropium Bromide	Ipratropium Bromide	15	suppressed
Loperamide	Loperamide Hcl	15	suppressed
Nitroglycerin	Nitroglycerin	15	11
Pioglitazone Hcl	Pioglitazone Hcl	15	suppressed
Risperidone	Risperidone	15	suppressed
Novolog Flexpen	Insulin Aspart	14	suppressed
Penicillin V Potassium	Penicillin V Potassium	14	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	14	suppressed
Tacrolimus	Tacrolimus	14	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	14	suppressed
Vancomycin Hcl	Vancomycin Hcl	14	suppressed
Ventolin Hfa	Albuterol Sulfate	14	suppressed
Amoxicillin	Amoxicillin	13	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	13	11
Buspirone Hcl	Buspirone Hcl	13	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	13	suppressed
Nabumetone	Nabumetone	13	suppressed
Benazepril-Hydrochlorothiazide	Benazepril/Hydrochlorothiazide	12	suppressed
Lidocaine	Lidocaine	12	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	12	suppressed
Mounjaro	Tirzepatide	12	suppressed
Quetiapine Fumarate Er	Quetiapine Fumarate	12	suppressed
Sulfasalazine	Sulfasalazine	12	suppressed
Arnuity Ellipta	Fluticasone Furoate	11	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	11	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	11	suppressed
Easy Touch Pen Needle	Pen Needle, Diabetic	11	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	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