Healthcare provider profile · identity verified

Patrick M Allen, DO

Family Practice · WAUSAU, WI · NPI 1811280407

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	667	187
Omeprazole	Omeprazole	489	112
Amlodipine Besylate	Amlodipine Besylate	471	123
Lisinopril	Lisinopril	408	110
Losartan Potassium	Losartan Potassium	370	90
Levothyroxine Sodium	Levothyroxine Sodium	324	80
Gabapentin	Gabapentin	270	53
Simvastatin	Simvastatin	266	60
Tamsulosin Hcl	Tamsulosin Hcl	264	75
Metformin Hcl	Metformin Hcl	261	70
Metoprolol Succinate	Metoprolol Succinate	250	58
Furosemide	Furosemide	214	55
Rosuvastatin Calcium	Rosuvastatin Calcium	202	52
Ozempic	Semaglutide	187	33
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	182	40
Pantoprazole Sodium	Pantoprazole Sodium	179	40
Hydrochlorothiazide	Hydrochlorothiazide	178	59
Citalopram Hbr	Citalopram Hydrobromide	147	29
Potassium Chloride	Potassium Chloride	136	38
Alprazolam	Alprazolam	135	32
Jardiance	Empagliflozin	130	27
Trazodone Hcl	Trazodone Hcl	130	30
Carvedilol	Carvedilol	128	33
Albuterol Sulfate Hfa	Albuterol Sulfate	127	48
Tramadol Hcl	Tramadol Hcl	126	37
Ezetimibe	Ezetimibe	124	28
Metoprolol Tartrate	Metoprolol Tartrate	124	35
Zolpidem Tartrate	Zolpidem Tartrate	124	22
Allopurinol	Allopurinol	118	34
Metformin Hcl Er	Metformin Hcl	116	31
Sertraline Hcl	Sertraline Hcl	112	23
Trulicity	Dulaglutide	109	19
Warfarin Sodium	Warfarin Sodium	105	17
Eliquis	Apixaban	98	23
Meloxicam	Meloxicam	88	24
Famotidine	Famotidine	85	24
Prednisone	Prednisone	84	53
Tizanidine Hcl	Tizanidine Hcl	82	24
Clopidogrel	Clopidogrel Bisulfate	81	24
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	79	20
Quetiapine Fumarate	Quetiapine Fumarate	78	14
Buspirone Hcl	Buspirone Hcl	77	21
Venlafaxine Hcl Er	Venlafaxine Hcl	77	17
Lorazepam	Lorazepam	74	23
Duloxetine Hcl	Duloxetine Hcl	67	20
Clonazepam	Clonazepam	60	12
Mirtazapine	Mirtazapine	58	16
Pregabalin	Pregabalin	56	15
Fluticasone Propionate	Fluticasone Propionate	53	16
Fluoxetine Hcl	Fluoxetine Hcl	52	20
Propranolol Hcl	Propranolol Hcl	51	suppressed
Glipizide Er	Glipizide	49	16
Diclofenac Sodium	Diclofenac Sodium	48	18
Pravastatin Sodium	Pravastatin Sodium	48	12
Paroxetine Hcl	Paroxetine Hcl	46	11
Enalapril Maleate	Enalapril Maleate	45	suppressed
Nystatin	Nystatin	45	27
Celecoxib	Celecoxib	44	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	44	suppressed
Fenofibrate	Fenofibrate	44	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	44	15
Oxycodone Hcl	Oxycodone Hcl	44	suppressed
Propranolol Hcl Er	Propranolol Hcl	44	suppressed
Bupropion Hcl Sr	Bupropion Hcl	42	suppressed
Montelukast Sodium	Montelukast Sodium	42	12
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	42	20
Symbicort	Budesonide/Formoterol Fumarate	42	11
Atenolol	Atenolol	41	11
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	41	suppressed
Diazepam	Diazepam	39	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	39	suppressed
Spironolactone	Spironolactone	39	12
Bupropion Xl	Bupropion Hcl	38	14
Finasteride	Finasteride	38	12
Bumetanide	Bumetanide	37	11
Valacyclovir	Valacyclovir Hcl	37	12
Alendronate Sodium	Alendronate Sodium	35	suppressed
Levetiracetam	Levetiracetam	35	suppressed
Amoxicillin	Amoxicillin	34	20
Escitalopram Oxalate	Escitalopram Oxalate	33	suppressed
Ropinirole Hcl	Ropinirole Hcl	33	suppressed
Donepezil Hcl	Donepezil Hcl	31	suppressed
Januvia	Sitagliptin Phosphate	31	suppressed
Ondansetron Odt	Ondansetron	31	suppressed
Risperidone	Risperidone	31	suppressed
Chlorthalidone	Chlorthalidone	30	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	30	suppressed
Ulticare Pen Needle	Pen Needle, Diabetic	30	suppressed
Lovastatin	Lovastatin	27	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	27	suppressed
Digoxin	Digoxin	26	suppressed
Ketoconazole	Ketoconazole	26	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	26	suppressed
Aripiprazole	Aripiprazole	25	suppressed
Klor-Con M20	Potassium Chloride	25	suppressed
Memantine Hcl	Memantine Hcl	25	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	24	18
Morphine Sulfate Er	Morphine Sulfate	24	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	23	suppressed
Dutasteride	Dutasteride	23	suppressed
Glipizide	Glipizide	22	suppressed
Solifenacin Succinate	Solifenacin Succinate	22	suppressed
Cilostazol	Cilostazol	21	suppressed
Divalproex Sodium	Divalproex Sodium	21	suppressed
Liothyronine Sodium	Liothyronine Sodium	21	suppressed
Loperamide	Loperamide Hcl	21	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	21	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	21	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	20	19
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	20	suppressed
Gemfibrozil	Gemfibrozil	20	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	20	suppressed
Torsemide	Torsemide	20	suppressed
Tresiba Flextouch U-200	Insulin Degludec	20	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	20	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	19	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	19	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	19	suppressed
Meclizine Hcl	Meclizine Hcl	19	suppressed
Myrbetriq	Mirabegron	19	suppressed
Semglee (Yfgn) Pen	Insulin Glargine-Yfgn	19	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	19	suppressed
Fluconazole	Fluconazole	18	12
Humalog Kwikpen U-100	Insulin Lispro	18	suppressed
Prazosin Hcl	Prazosin Hcl	18	suppressed
Tradjenta	Linagliptin	18	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	18	suppressed
Ventolin Hfa	Albuterol Sulfate	18	suppressed
Bupropion Hcl	Bupropion Hcl	17	suppressed
Glimepiride	Glimepiride	17	suppressed
Hydralazine Hcl	Hydralazine Hcl	17	suppressed
Phenytoin	Phenytoin	17	suppressed
Synthroid	Levothyroxine Sodium	17	suppressed
Terazosin Hcl	Terazosin Hcl	17	suppressed
Acarbose	Acarbose	16	suppressed
Amiodarone Hcl	Amiodarone Hcl	16	suppressed
Cefuroxime	Cefuroxime Axetil	16	16
Desvenlafaxine Succinate Er	Desvenlafaxine Succinate	16	suppressed
Sucralfate	Sucralfate	16	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	15	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	15	suppressed
Fosinopril Sodium	Fosinopril Sodium	15	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	15	suppressed
Movantik	Naloxegol Oxalate	15	suppressed
Niacin Er	Niacin	15	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	15	suppressed
Xarelto	Rivaroxaban	15	suppressed
Fluticasone Propionate Hfa	Fluticasone Propionate	14	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	14	suppressed
Modafinil	Modafinil	14	suppressed
Nyamyc	Nystatin	14	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	13	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	13	suppressed
Farxiga	Dapagliflozin Propanediol	13	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	13	suppressed
Estradiol	Estradiol	12	suppressed
Ibuprofen	Ibuprofen	12	suppressed
Levofloxacin	Levofloxacin	12	suppressed
Spiriva Handihaler	Tiotropium Bromide	12	suppressed
Tresiba Flextouch U-100	Insulin Degludec	12	suppressed
Trifluoperazine Hcl	Trifluoperazine Hcl	12	suppressed
Vascepa	Icosapent Ethyl	12	suppressed
Zonisamide	Zonisamide	12	suppressed
Alprazolam Er	Alprazolam	11	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	11	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	11	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	11	suppressed
Humalog Junior Kwikpen	Insulin Lispro	11	suppressed
Nifedipine Er	Nifedipine	11	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	11	suppressed
Ramelteon	Ramelteon	11	suppressed
Rivastigmine	Rivastigmine Tartrate	11	suppressed
Topiramate	Topiramate	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