Healthcare provider profile · identity verified

Michael J Allen, MD

Internal Medicine · EVANSVILLE, IN · NPI 1366429714

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
Amlodipine Besylate	Amlodipine Besylate	575	155
Levothyroxine Sodium	Levothyroxine Sodium	561	140
Atorvastatin Calcium	Atorvastatin Calcium	493	133
Losartan Potassium	Losartan Potassium	406	110
Pantoprazole Sodium	Pantoprazole Sodium	307	89
Escitalopram Oxalate	Escitalopram Oxalate	291	75
Pravastatin Sodium	Pravastatin Sodium	287	79
Omeprazole	Omeprazole	274	72
Tamsulosin Hcl	Tamsulosin Hcl	273	66
Hydrochlorothiazide	Hydrochlorothiazide	265	71
Meloxicam	Meloxicam	244	64
Montelukast Sodium	Montelukast Sodium	235	67
Alprazolam	Alprazolam	229	43
Metformin Hcl	Metformin Hcl	229	66
Trazodone Hcl	Trazodone Hcl	210	56
Metoprolol Succinate	Metoprolol Succinate	206	58
Simvastatin	Simvastatin	203	54
Gabapentin	Gabapentin	163	43
Rosuvastatin Calcium	Rosuvastatin Calcium	162	47
Valsartan	Valsartan	162	46
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	157	33
Sertraline Hcl	Sertraline Hcl	150	42
Synthroid	Levothyroxine Sodium	144	36
Allopurinol	Allopurinol	128	38
Celecoxib	Celecoxib	128	26
Zolpidem Tartrate	Zolpidem Tartrate	126	25
Lisinopril	Lisinopril	125	35
Duloxetine Hcl	Duloxetine Hcl	124	25
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	119	30
Furosemide	Furosemide	114	37
Glimepiride	Glimepiride	112	29
Ezetimibe	Ezetimibe	110	33
Metoprolol Tartrate	Metoprolol Tartrate	110	29
Lorazepam	Lorazepam	103	23
Clopidogrel	Clopidogrel Bisulfate	99	27
Potassium Chloride	Potassium Chloride	99	34
Bupropion Xl	Bupropion Hcl	97	27
Citalopram Hbr	Citalopram Hydrobromide	97	27
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	96	25
Albuterol Sulfate Hfa	Albuterol Sulfate	93	24
Benazepril Hcl	Benazepril Hcl	93	24
Spironolactone	Spironolactone	93	24
Venlafaxine Hcl Er	Venlafaxine Hcl	93	22
Clonazepam	Clonazepam	88	11
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	87	34
Tramadol Hcl	Tramadol Hcl	86	30
Temazepam	Temazepam	84	12
Atenolol	Atenolol	82	23
Donepezil Hcl	Donepezil Hcl	80	22
Triamcinolone Acetonide	Triamcinolone Acetonide	79	42
Metformin Hcl Er	Metformin Hcl	70	18
Olmesartan Medoxomil	Olmesartan Medoxomil	70	19
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	70	20
Carvedilol	Carvedilol	69	19
Memantine Hcl	Memantine Hcl	69	17
Prednisone	Prednisone	69	25
Pregabalin	Pregabalin	68	16
Doxycycline Hyclate	Doxycycline Hyclate	66	56
Desvenlafaxine Succinate Er	Desvenlafaxine Succinate	63	18
Eliquis	Apixaban	63	18
Lovastatin	Lovastatin	60	17
Mounjaro	Tirzepatide	57	suppressed
Tresiba Flextouch U-100	Insulin Degludec	56	suppressed
Linzess	Linaclotide	55	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	53	15
Terazosin Hcl	Terazosin Hcl	53	16
Amlodipine-Valsartan	Amlodipine Besylate/Valsartan	52	15
Ropinirole Hcl	Ropinirole Hcl	51	16
Fluoxetine Hcl	Fluoxetine Hcl	50	15
Azithromycin	Azithromycin	49	43
Januvia	Sitagliptin Phosphate	49	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	48	13
Hydralazine Hcl	Hydralazine Hcl	48	13
Hydroxyzine Hcl	Hydroxyzine Hcl	48	12
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	45	12
Jardiance	Empagliflozin	45	suppressed
Farxiga	Dapagliflozin Propanediol	44	13
Finasteride	Finasteride	44	12
Estradiol	Estradiol	43	14
Irbesartan	Irbesartan	43	12
Fluticasone Propionate	Fluticasone Propionate	42	17
Oxybutynin Chloride Er	Oxybutynin Chloride	41	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	40	suppressed
Methylprednisolone	Methylprednisolone	38	34
Nateglinide	Nateglinide	37	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	36	17
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	36	suppressed
Testosterone Cypionate	Testosterone Cypionate	36	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	35	32
Oxycodone Hcl	Oxycodone Hcl	35	suppressed
Warfarin Sodium	Warfarin Sodium	35	suppressed
Symbicort	Budesonide/Formoterol Fumarate	34	12
Torsemide	Torsemide	34	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	33	12
Colesevelam Hcl	Colesevelam Hcl	33	suppressed
Diclofenac Sodium	Diclofenac Sodium	33	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	33	12
Sumatriptan Succinate	Sumatriptan Succinate	33	suppressed
Meclizine Hcl	Meclizine Hcl	32	12
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	32	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	31	suppressed
Tramadol Hcl-Acetaminophen	Tramadol Hcl/Acetaminophen	31	suppressed
Chlorthalidone	Chlorthalidone	30	suppressed
Acyclovir	Acyclovir	29	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	29	25
Enalapril Maleate	Enalapril Maleate	29	suppressed
Glyburide-Metformin Hcl	Glyburide/Metformin Hcl	29	suppressed
Liothyronine Sodium	Liothyronine Sodium	29	suppressed
Nebivolol Hcl	Nebivolol Hcl	29	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	29	suppressed
Buspirone Hcl	Buspirone Hcl	28	11
Fluconazole	Fluconazole	28	18
Imipramine Hcl	Imipramine Hcl	28	suppressed
Ondansetron Odt	Ondansetron	28	12
Fenofibrate	Fenofibrate	26	suppressed
Fentanyl	Fentanyl	26	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	26	suppressed
Topiramate	Topiramate	26	suppressed
Xarelto	Rivaroxaban	26	suppressed
Diazepam	Diazepam	25	suppressed
Mirtazapine	Mirtazapine	25	suppressed
Benazepril-Hydrochlorothiazide	Benazepril/Hydrochlorothiazide	24	suppressed
Clobetasol Propionate	Clobetasol Propionate	24	14
Labetalol Hcl	Labetalol Hcl	24	suppressed
Tizanidine Hcl	Tizanidine Hcl	24	suppressed
Vascepa	Icosapent Ethyl	24	suppressed
Alendronate Sodium	Alendronate Sodium	23	suppressed
Breo Ellipta	Fluticasone/Vilanterol	23	suppressed
Carisoprodol	Carisoprodol	23	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	23	suppressed
Famotidine	Famotidine	23	suppressed
Levemir Flexpen	Insulin Detemir	23	suppressed
Aripiprazole	Aripiprazole	22	suppressed
Dexamethasone	Dexamethasone	22	21
Ipratropium Bromide	Ipratropium Bromide	22	suppressed
Ondansetron Hcl	Ondansetron Hcl	22	11
Ozempic	Semaglutide	22	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	21	17
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	21	13
Promethazine Hcl	Promethazine Hcl	21	suppressed
Telmisartan	Telmisartan	21	suppressed
Morphine Sulfate Er	Morphine Sulfate	20	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	20	suppressed
Rizatriptan	Rizatriptan Benzoate	20	suppressed
Cephalexin	Cephalexin	19	18
Estradiol (Twice Weekly)	Estradiol	19	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	19	suppressed
Testosterone	Testosterone	19	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	18	suppressed
Klor-Con M20	Potassium Chloride	18	suppressed
Bisoprolol-Hydrochlorothiazide	Bisoprolol/Hydrochlorothiazide	17	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	17	suppressed
Eszopiclone	Eszopiclone	17	suppressed
Ibuprofen	Ibuprofen	17	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	17	suppressed
Tresiba Flextouch U-200	Insulin Degludec	17	suppressed
Amoxicillin	Amoxicillin	16	14
Naproxen	Naproxen	16	suppressed
Olanzapine	Olanzapine	16	suppressed
Vilazodone Hcl	Vilazodone Hcl	16	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	15	suppressed
Lansoprazole	Lansoprazole	15	suppressed
Metronidazole	Metronidazole	15	suppressed
Nitroglycerin	Nitroglycerin	15	suppressed
Verapamil Er	Verapamil Hcl	15	suppressed
Ammonium Lactate	Ammonium Lactate	14	suppressed
Clindamycin Hcl	Clindamycin Hcl	14	suppressed
Glipizide	Glipizide	14	suppressed
Olmesartan-Hydrochlorothiazide	Olmesartan/Hydrochlorothiazide	14	suppressed
Tradjenta	Linagliptin	14	suppressed
Divalproex Sodium	Divalproex Sodium	13	suppressed
Ezetimibe-Simvastatin	Ezetimibe/Simvastatin	13	suppressed
Fluvoxamine Maleate Er	Fluvoxamine Maleate	13	suppressed
Hydrocortisone	Hydrocortisone	13	suppressed
Ibandronate Sodium	Ibandronate Sodium	13	suppressed
Myrbetriq	Mirabegron	13	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	12	suppressed
Biktarvy	Bictegrav/Emtricit/Tenofov Ala	12	suppressed
Methylphenidate Hcl	Methylphenidate Hcl	12	suppressed
Novolog Mix 70-30 Flexpen	Insulin Aspart Prot/Insuln Asp	12	suppressed
Nystatin	Nystatin	12	suppressed
Primidone	Primidone	12	suppressed
Raloxifene Hcl	Raloxifene Hcl	12	suppressed
Colchicine	Colchicine	11	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	11	suppressed
Fesoterodine Fumarate Er	Fesoterodine Fumarate	11	suppressed
Nifedipine Er	Nifedipine	11	suppressed
Ramipril	Ramipril	11	suppressed
Sildenafil Citrate	Sildenafil Citrate	11	suppressed
Spiriva Respimat	Tiotropium Bromide	11	suppressed
Vyzulta	Latanoprostene Bunod	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