Healthcare provider profile · identity verified

Brian A Grus, MD

Internal Medicine · O FALLON, MO · NPI 1053421065

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	800	225
Lisinopril	Lisinopril	613	166
Amlodipine Besylate	Amlodipine Besylate	603	155
Levothyroxine Sodium	Levothyroxine Sodium	572	143
Losartan Potassium	Losartan Potassium	361	101
Simvastatin	Simvastatin	333	91
Metoprolol Succinate	Metoprolol Succinate	297	89
Alprazolam	Alprazolam	280	84
Pantoprazole Sodium	Pantoprazole Sodium	270	87
Metformin Hcl	Metformin Hcl	261	78
Omeprazole	Omeprazole	254	72
Tamsulosin Hcl	Tamsulosin Hcl	223	66
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	222	59
Hydrochlorothiazide	Hydrochlorothiazide	221	62
Gabapentin	Gabapentin	199	67
Metformin Hcl Er	Metformin Hcl	198	63
Escitalopram Oxalate	Escitalopram Oxalate	197	52
Rosuvastatin Calcium	Rosuvastatin Calcium	192	51
Metoprolol Tartrate	Metoprolol Tartrate	182	53
Albuterol Sulfate Hfa	Albuterol Sulfate	177	61
Tramadol Hcl	Tramadol Hcl	173	70
Meloxicam	Meloxicam	169	56
Pravastatin Sodium	Pravastatin Sodium	167	50
Trazodone Hcl	Trazodone Hcl	167	54
Glimepiride	Glimepiride	166	51
Sertraline Hcl	Sertraline Hcl	153	46
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	144	48
Furosemide	Furosemide	143	45
Donepezil Hcl	Donepezil Hcl	142	30
Potassium Chloride	Potassium Chloride	136	34
Clopidogrel	Clopidogrel Bisulfate	130	33
Fluticasone Propionate	Fluticasone Propionate	122	45
Lorazepam	Lorazepam	122	25
Glipizide	Glipizide	121	36
Allopurinol	Allopurinol	115	28
Mounjaro	Tirzepatide	113	16
Duloxetine Hcl	Duloxetine Hcl	110	24
Jardiance	Empagliflozin	109	23
Citalopram Hbr	Citalopram Hydrobromide	108	31
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	108	30
Famotidine	Famotidine	104	28
Eliquis	Apixaban	98	27
Azithromycin	Azithromycin	96	76
Finasteride	Finasteride	90	29
Atenolol	Atenolol	87	25
Warfarin Sodium	Warfarin Sodium	86	20
Oxybutynin Chloride Er	Oxybutynin Chloride	85	16
Bupropion Xl	Bupropion Hcl	83	27
Lovastatin	Lovastatin	83	20
Tizanidine Hcl	Tizanidine Hcl	79	33
Montelukast Sodium	Montelukast Sodium	78	23
Oxycodone Hcl	Oxycodone Hcl	78	suppressed
Prednisone	Prednisone	75	40
Venlafaxine Hcl Er	Venlafaxine Hcl	75	22
Arexvy	Rsvpref3 Antigen/As01e/Pf	74	74
Carvedilol	Carvedilol	72	21
Xarelto	Rivaroxaban	69	16
Quetiapine Fumarate	Quetiapine Fumarate	65	15
Zolpidem Tartrate	Zolpidem Tartrate	64	22
Celecoxib	Celecoxib	63	20
Memantine Hcl	Memantine Hcl	63	suppressed
Ropinirole Hcl	Ropinirole Hcl	57	14
Cefdinir	Cefdinir	56	48
Chlorthalidone	Chlorthalidone	56	14
Breo Ellipta	Fluticasone/Vilanterol	55	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	55	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	54	17
Synthroid	Levothyroxine Sodium	53	11
Alendronate Sodium	Alendronate Sodium	52	18
Pioglitazone Hcl	Pioglitazone Hcl	52	16
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	51	32
Ezetimibe	Ezetimibe	51	15
Torsemide	Torsemide	49	20
Hydralazine Hcl	Hydralazine Hcl	47	suppressed
Estradiol	Estradiol	46	11
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	45	38
Diazepam	Diazepam	44	suppressed
Levofloxacin	Levofloxacin	44	33
Carbidopa-Levodopa	Carbidopa/Levodopa	43	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	43	29
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	42	suppressed
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	42	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	42	33
Amoxicillin	Amoxicillin	39	26
Labetalol Hcl	Labetalol Hcl	39	suppressed
Cephalexin	Cephalexin	38	29
Mupirocin	Mupirocin	38	20
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	37	suppressed
Clonidine Hcl	Clonidine Hcl	36	14
Sumatriptan Succinate	Sumatriptan Succinate	36	suppressed
Alfuzosin Hcl Er	Alfuzosin Hcl	35	11
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	35	13
Methylprednisolone	Methylprednisolone	34	31
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	33	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	33	11
Spironolactone	Spironolactone	33	13
Ventolin Hfa	Albuterol Sulfate	33	suppressed
Buspirone Hcl	Buspirone Hcl	32	suppressed
Glipizide Er	Glipizide	32	suppressed
Pregabalin	Pregabalin	32	suppressed
Testosterone Cypionate	Testosterone Cypionate	32	suppressed
Divalproex Sodium	Divalproex Sodium	31	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	31	suppressed
Valacyclovir	Valacyclovir Hcl	31	18
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	29	suppressed
Benazepril Hcl	Benazepril Hcl	29	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	29	25
Esomeprazole Magnesium	Esomeprazole Magnesium	28	suppressed
Ipratropium Bromide	Ipratropium Bromide	28	suppressed
Ondansetron Hcl	Ondansetron Hcl	28	16
Ramipril	Ramipril	28	suppressed
Baclofen	Baclofen	27	suppressed
Nitroglycerin	Nitroglycerin	27	14
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	27	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	26	11
Fenofibrate	Fenofibrate	26	suppressed
Ondansetron Odt	Ondansetron	26	12
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	25	11
Naproxen	Naproxen	25	13
Amitriptyline Hcl	Amitriptyline Hcl	24	11
Olmesartan Medoxomil	Olmesartan Medoxomil	24	suppressed
Azelastine Hcl	Azelastine Hcl	23	suppressed
Trulicity	Dulaglutide	23	suppressed
Enalapril Maleate	Enalapril Maleate	22	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	21	suppressed
Primidone	Primidone	21	suppressed
Symbicort	Budesonide/Formoterol Fumarate	21	suppressed
Bisoprolol-Hydrochlorothiazide	Bisoprolol/Hydrochlorothiazide	20	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	20	13
Meclizine Hcl	Meclizine Hcl	20	13
Mirtazapine	Mirtazapine	20	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	20	20
Diclofenac Sodium	Diclofenac Sodium	19	suppressed
Acyclovir	Acyclovir	18	suppressed
Bupropion Hcl Sr	Bupropion Hcl	18	suppressed
Cefadroxil	Cefadroxil	18	17
Dicyclomine Hcl	Dicyclomine Hcl	18	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	18	suppressed
Methocarbamol	Methocarbamol	18	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	17	suppressed
Lansoprazole	Lansoprazole	17	suppressed
Raloxifene Hcl	Raloxifene Hcl	17	suppressed
Toujeo Max Solostar	Insulin Glargine,hum.Rec.Anlog	17	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	16	suppressed
Nystatin	Nystatin	16	suppressed
Ozempic	Semaglutide	16	suppressed
Propranolol Hcl Er	Propranolol Hcl	16	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	16	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	16	suppressed
Advair Hfa	Fluticasone Propion/Salmeterol	15	suppressed
Clonazepam	Clonazepam	15	suppressed
Fluconazole	Fluconazole	15	suppressed
Ciclopirox	Ciclopirox Olamine	14	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	14	suppressed
Farxiga	Dapagliflozin Propanediol	14	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	14	suppressed
Januvia	Sitagliptin Phosphate	14	suppressed
Telmisartan	Telmisartan	14	suppressed
Temazepam	Temazepam	14	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	14	suppressed
Advair Diskus	Fluticasone Propion/Salmeterol	13	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	13	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	13	suppressed
Irbesartan	Irbesartan	13	suppressed
Metaxalone	Metaxalone	13	suppressed
Nadolol	Nadolol	13	suppressed
Olanzapine	Olanzapine	13	suppressed
Sildenafil Citrate	Sildenafil Citrate	13	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	12	suppressed
Levetiracetam	Levetiracetam	12	suppressed
Percocet	Oxycodone Hcl/Acetaminophen	12	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	12	suppressed
Cilostazol	Cilostazol	11	suppressed
Ciprofloxacin-Dexamethasone	Ciprofloxacin Hcl/Dexameth	11	suppressed
Dilt-Xr	Diltiazem Hcl	11	suppressed
Diltiazem 24hr Er (Xr)	Diltiazem Hcl	11	suppressed
Hydrocortisone	Hydrocortisone	11	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	11	suppressed
Tramadol Hcl-Acetaminophen	Tramadol Hcl/Acetaminophen	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