Healthcare provider profile · identity verified

Bobby Wayne Marek, MD

Internal Medicine · BRENHAM, TX · NPI 1063415149

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	489	144
Metoprolol Succinate	Metoprolol Succinate	387	102
Amlodipine Besylate	Amlodipine Besylate	381	89
Levothyroxine Sodium	Levothyroxine Sodium	373	60
Losartan Potassium	Losartan Potassium	370	99
Pantoprazole Sodium	Pantoprazole Sodium	367	76
Metformin Hcl Er	Metformin Hcl	355	82
Lisinopril	Lisinopril	324	82
Hydrochlorothiazide	Hydrochlorothiazide	283	75
Furosemide	Furosemide	232	71
Trulicity	Dulaglutide	224	35
Alendronate Sodium	Alendronate Sodium	220	49
Gabapentin	Gabapentin	211	48
Carvedilol	Carvedilol	208	55
Simvastatin	Simvastatin	189	47
Metformin Hcl	Metformin Hcl	177	37
Allopurinol	Allopurinol	168	45
Omeprazole	Omeprazole	168	29
Fluticasone Propionate	Fluticasone Propionate	164	35
Potassium Chloride	Potassium Chloride	152	31
Escitalopram Oxalate	Escitalopram Oxalate	130	26
Zolpidem Tartrate	Zolpidem Tartrate	121	23
Prednisone	Prednisone	119	78
Pravastatin Sodium	Pravastatin Sodium	110	30
Trazodone Hcl	Trazodone Hcl	104	30
Sertraline Hcl	Sertraline Hcl	101	21
Tamsulosin Hcl	Tamsulosin Hcl	101	27
Meloxicam	Meloxicam	98	23
Montelukast Sodium	Montelukast Sodium	92	19
Clopidogrel	Clopidogrel Bisulfate	88	21
Rosuvastatin Calcium	Rosuvastatin Calcium	88	29
Celecoxib	Celecoxib	86	21
Mirtazapine	Mirtazapine	85	15
Metoprolol Tartrate	Metoprolol Tartrate	80	18
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	79	21
Eliquis	Apixaban	77	18
Albuterol Sulfate Hfa	Albuterol Sulfate	76	38
Ipratropium Bromide	Ipratropium Bromide	73	30
Pregabalin	Pregabalin	73	13
Hydralazine Hcl	Hydralazine Hcl	72	19
Tramadol Hcl	Tramadol Hcl	71	18
Jardiance	Empagliflozin	69	14
Clonazepam	Clonazepam	62	suppressed
Azithromycin	Azithromycin	61	49
Solifenacin Succinate	Solifenacin Succinate	55	17
Venlafaxine Hcl Er	Venlafaxine Hcl	55	15
Estradiol	Estradiol	54	15
Levetiracetam	Levetiracetam	52	suppressed
Ozempic	Semaglutide	52	suppressed
Mounjaro	Tirzepatide	51	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	50	12
Temazepam	Temazepam	50	suppressed
Nifedipine Er	Nifedipine	49	15
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	48	22
Glimepiride	Glimepiride	47	13
Propranolol Hcl Er	Propranolol Hcl	47	suppressed
Atenolol	Atenolol	46	11
Finasteride	Finasteride	46	suppressed
Ondansetron Odt	Ondansetron	46	12
Phenytoin Sodium Extended	Phenytoin Sodium Extended	45	suppressed
Valsartan	Valsartan	44	suppressed
Duloxetine Hcl	Duloxetine Hcl	43	11
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	43	11
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	43	12
Tresiba Flextouch U-100	Insulin Degludec	43	suppressed
Famotidine	Famotidine	42	11
Hydroxyzine Hcl	Hydroxyzine Hcl	42	suppressed
Januvia	Sitagliptin Phosphate	42	suppressed
Linzess	Linaclotide	42	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	42	suppressed
Ezetimibe	Ezetimibe	41	11
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	41	29
Vascepa	Icosapent Ethyl	41	suppressed
Alprazolam	Alprazolam	40	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	40	suppressed
Spironolactone	Spironolactone	39	12
Tizanidine Hcl	Tizanidine Hcl	39	suppressed
Topiramate	Topiramate	39	suppressed
Xarelto	Rivaroxaban	39	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	38	suppressed
Clonidine Hcl	Clonidine Hcl	38	20
Myrbetriq	Mirabegron	38	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	37	suppressed
Memantine Hcl	Memantine Hcl	37	suppressed
Amiodarone Hcl	Amiodarone Hcl	35	suppressed
Divalproex Sodium Er	Divalproex Sodium	35	suppressed
Lorazepam	Lorazepam	35	13
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	34	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	33	30
Azelastine Hcl	Azelastine Hcl	33	suppressed
Glycopyrrolate	Glycopyrrolate	33	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	33	12
Buspirone Hcl	Buspirone Hcl	31	suppressed
Citalopram Hbr	Citalopram Hydrobromide	31	suppressed
Primidone	Primidone	31	suppressed
Glipizide	Glipizide	29	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	28	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	28	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	28	suppressed
Bupropion Xl	Bupropion Hcl	27	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	26	suppressed
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	26	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	25	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	25	suppressed
Chlorhexidine Gluconate	Chlorhexidine Gluconate	24	suppressed
Dexlansoprazole Dr	Dexlansoprazole	24	suppressed
Fenofibrate	Fenofibrate	24	suppressed
Baclofen	Baclofen	23	suppressed
Lovastatin	Lovastatin	23	suppressed
Bydureon Bcise	Exenatide Microspheres	22	suppressed
Gemfibrozil	Gemfibrozil	22	suppressed
Premarin	Estrogens, Conjugated	22	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	22	suppressed
Aripiprazole	Aripiprazole	21	suppressed
Glyburide	Glyburide	21	suppressed
Paroxetine Hcl	Paroxetine Hcl	21	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	20	suppressed
Farxiga	Dapagliflozin Propanediol	20	suppressed
Glipizide Er	Glipizide	20	suppressed
Latanoprost	Latanoprost	20	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	19	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	19	suppressed
Nitrofurantoin	Nitrofurantoin Macrocrystal	19	suppressed
Olanzapine	Olanzapine	19	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	19	suppressed
Betamethasone Valerate	Betamethasone Valerate	18	17
Fesoterodine Fumarate Er	Fesoterodine Fumarate	18	suppressed
Ketoconazole	Ketoconazole	18	suppressed
Carbamazepine	Carbamazepine	17	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	17	15
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	17	suppressed
Propranolol Hcl	Propranolol Hcl	17	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	16	suppressed
Meclizine Hcl	Meclizine Hcl	16	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	15	suppressed
Lactulose	Lactulose	15	suppressed
Promethazine Hcl	Promethazine Hcl	15	suppressed
Bevespi Aerosphere	Glycopyrrolate/Formoterol Fum	14	suppressed
Diclofenac Sodium	Diclofenac Sodium	14	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	14	suppressed
Nabumetone	Nabumetone	14	suppressed
Niacin Er	Niacin	14	suppressed
Ondansetron Hcl	Ondansetron Hcl	14	suppressed
Prempro	Estrogen,con/M-Progest Acet	14	suppressed
Prolia	Denosumab	14	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	14	suppressed
Calcitonin-Salmon	Calcitonin,salmon,synthetic	13	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	13	suppressed
Doxepin Hcl	Doxepin Hcl	13	suppressed
Enalapril Maleate	Enalapril Maleate	13	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	13	suppressed
Ibuprofen	Ibuprofen	13	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	13	suppressed
Omega-3 Acid Ethyl Esters	Omega-3 Acid Ethyl Esters	13	suppressed
Alphagan P	Brimonidine Tartrate	12	suppressed
Amoxicillin	Amoxicillin	12	suppressed
Benztropine Mesylate	Benztropine Mesylate	12	suppressed
Desmopressin Acetate	Desmopressin Acetate	12	suppressed
Divalproex Sodium	Divalproex Sodium	12	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	12	suppressed
Minocycline Hcl	Minocycline Hcl	12	suppressed
Oxycontin	Oxycodone Hcl	12	suppressed
Symbicort	Budesonide/Formoterol Fumarate	12	suppressed
Synthroid	Levothyroxine Sodium	12	suppressed
Torsemide	Torsemide	12	suppressed
Toujeo Max Solostar	Insulin Glargine,hum.Rec.Anlog	12	suppressed
Breo Ellipta	Fluticasone/Vilanterol	11	suppressed
Bumetanide	Bumetanide	11	suppressed
Bupropion Hcl Sr	Bupropion Hcl	11	suppressed
Diazepam	Diazepam	11	suppressed
Fanapt	Iloperidone	11	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	11	suppressed
Medroxyprogesterone Acetate	Medroxyprogesterone Acetate	11	suppressed
Mesalamine Er	Mesalamine	11	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	11	suppressed
Ramipril	Ramipril	11	suppressed
Testosterone	Testosterone	11	suppressed
Testosterone Cypionate	Testosterone Cypionate	11	suppressed
Tresiba Flextouch U-200	Insulin Degludec	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