Healthcare provider profile · identity verified

George Michael Markus, M.D.

Internal Medicine · DALLAS, TX · NPI 1295831535

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
Levothyroxine Sodium	Levothyroxine Sodium	649	184
Amlodipine Besylate	Amlodipine Besylate	449	139
Rosuvastatin Calcium	Rosuvastatin Calcium	409	135
Atorvastatin Calcium	Atorvastatin Calcium	395	125
Metformin Hcl	Metformin Hcl	386	120
Gabapentin	Gabapentin	377	134
Lisinopril	Lisinopril	322	107
Meloxicam	Meloxicam	265	77
Pantoprazole Sodium	Pantoprazole Sodium	250	88
Losartan Potassium	Losartan Potassium	246	77
Metoprolol Succinate	Metoprolol Succinate	244	79
Alprazolam	Alprazolam	221	56
Tamsulosin Hcl	Tamsulosin Hcl	205	67
Ozempic	Semaglutide	203	33
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	199	62
Omeprazole	Omeprazole	168	59
Hydrochlorothiazide	Hydrochlorothiazide	157	58
Simvastatin	Simvastatin	156	46
Duloxetine Hcl	Duloxetine Hcl	143	39
Trazodone Hcl	Trazodone Hcl	142	48
Clonazepam	Clonazepam	134	23
Albuterol Sulfate Hfa	Albuterol Sulfate	132	51
Allopurinol	Allopurinol	131	38
Citalopram Hbr	Citalopram Hydrobromide	126	40
Glimepiride	Glimepiride	124	40
Prednisone	Prednisone	124	93
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	123	40
Potassium Chloride	Potassium Chloride	119	42
Olmesartan Medoxomil	Olmesartan Medoxomil	114	37
Pravastatin Sodium	Pravastatin Sodium	114	35
Chlorthalidone	Chlorthalidone	107	33
Bupropion Xl	Bupropion Hcl	97	28
Bisoprolol-Hydrochlorothiazide	Bisoprolol/Hydrochlorothiazide	96	26
Montelukast Sodium	Montelukast Sodium	94	32
Celecoxib	Celecoxib	92	30
Tramadol Hcl	Tramadol Hcl	91	28
Synthroid	Levothyroxine Sodium	90	25
Finasteride	Finasteride	89	28
Metoprolol Tartrate	Metoprolol Tartrate	85	28
Furosemide	Furosemide	84	34
Fluticasone Propionate	Fluticasone Propionate	83	36
Zolpidem Tartrate	Zolpidem Tartrate	82	33
Estradiol	Estradiol	80	24
Pioglitazone Hcl	Pioglitazone Hcl	79	28
Clopidogrel	Clopidogrel Bisulfate	77	21
Paroxetine Hcl	Paroxetine Hcl	75	23
Atenolol-Chlorthalidone	Atenolol/Chlorthalidone	74	23
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	73	22
Olmesartan-Hydrochlorothiazide	Olmesartan/Hydrochlorothiazide	73	26
Sertraline Hcl	Sertraline Hcl	71	24
Clonidine Hcl	Clonidine Hcl	67	21
Eliquis	Apixaban	66	21
Diclofenac Sodium	Diclofenac Sodium	65	14
Glipizide Er	Glipizide	65	20
Lorazepam	Lorazepam	63	13
Famotidine	Famotidine	60	21
Fenofibrate	Fenofibrate	58	17
Bisoprolol Fumarate	Bisoprolol Fumarate	57	14
Doxazosin Mesylate	Doxazosin Mesylate	56	17
Methylprednisolone	Methylprednisolone	56	30
Quetiapine Fumarate	Quetiapine Fumarate	55	15
Atenolol	Atenolol	52	16
Escitalopram Oxalate	Escitalopram Oxalate	52	18
Ciprofloxacin Hcl	Ciprofloxacin Hcl	50	41
Nifedipine Er	Nifedipine	50	16
Carvedilol	Carvedilol	48	19
Propranolol Hcl	Propranolol Hcl	48	13
Irbesartan	Irbesartan	47	14
Cefuroxime	Cefuroxime Axetil	46	41
Diazepam	Diazepam	44	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	44	13
Mounjaro	Tirzepatide	44	suppressed
Valacyclovir	Valacyclovir Hcl	44	20
Breo Ellipta	Fluticasone/Vilanterol	43	12
Ezetimibe	Ezetimibe	43	15
Oxybutynin Chloride Er	Oxybutynin Chloride	43	21
Fluoxetine Hcl	Fluoxetine Hcl	42	12
Hydralazine Hcl	Hydralazine Hcl	40	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	39	15
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	38	suppressed
Lovastatin	Lovastatin	34	suppressed
Toujeo Max Solostar	Insulin Glargine,hum.Rec.Anlog	33	11
Azithromycin	Azithromycin	32	28
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	31	20
Sumatriptan Succinate	Sumatriptan Succinate	31	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	29	suppressed
Ibuprofen	Ibuprofen	29	suppressed
Soliqua 100-33	Insulin Glargine/Lixisenatide	29	12
Propranolol Hcl Er	Propranolol Hcl	28	suppressed
Tizanidine Hcl	Tizanidine Hcl	28	18
Ondansetron Hcl	Ondansetron Hcl	27	suppressed
Amoxicillin	Amoxicillin	26	15
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	26	suppressed
Warfarin Sodium	Warfarin Sodium	26	suppressed
Doxepin Hcl	Doxepin Hcl	25	suppressed
Glipizide	Glipizide	25	suppressed
Testosterone Cypionate	Testosterone Cypionate	25	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	25	suppressed
Telmisartan	Telmisartan	24	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	23	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	23	16
Doxycycline Hyclate	Doxycycline Hyclate	23	suppressed
Januvia	Sitagliptin Phosphate	23	suppressed
Metformin Hcl Er	Metformin Hcl	23	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	22	suppressed
Azelastine Hcl	Azelastine Hcl	22	suppressed
Promethazine Hcl	Promethazine Hcl	22	suppressed
Sucralfate	Sucralfate	22	11
Desvenlafaxine Succinate Er	Desvenlafaxine Succinate	21	suppressed
Amlodipine-Valsartan	Amlodipine Besylate/Valsartan	20	suppressed
Bupropion Hcl Sr	Bupropion Hcl	20	suppressed
Humulin 70/30 Kwikpen	Insulin Nph Hum/Reg Insulin Hm	20	suppressed
Lactulose	Lactulose	20	12
Meclizine Hcl	Meclizine Hcl	20	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	20	suppressed
Entresto	Sacubitril/Valsartan	19	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	19	14
Ventolin Hfa	Albuterol Sulfate	19	suppressed
Ipratropium Bromide	Ipratropium Bromide	18	suppressed
Temazepam	Temazepam	18	suppressed
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	18	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	18	13
Trulicity	Dulaglutide	18	suppressed
Verapamil Er	Verapamil Hcl	18	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	17	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	17	suppressed
Labetalol Hcl	Labetalol Hcl	17	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	17	suppressed
Donepezil Hcl	Donepezil Hcl	16	suppressed
Mupirocin	Mupirocin	16	suppressed
Myrbetriq	Mirabegron	16	suppressed
Benazepril Hcl	Benazepril Hcl	15	suppressed
Clindamycin Hcl	Clindamycin Hcl	15	suppressed
Colesevelam Hcl	Colesevelam Hcl	15	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	15	suppressed
Liothyronine Sodium	Liothyronine Sodium	15	suppressed
Pregabalin	Pregabalin	15	suppressed
Raloxifene Hcl	Raloxifene Hcl	15	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	15	suppressed
Valsartan	Valsartan	15	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	15	suppressed
Acyclovir	Acyclovir	14	suppressed
Klor-Con M20	Potassium Chloride	14	suppressed
Methocarbamol	Methocarbamol	14	suppressed
Nitrofurantoin	Nitrofurantoin Macrocrystal	14	suppressed
Ramipril	Ramipril	14	suppressed
Xarelto	Rivaroxaban	14	suppressed
Lansoprazole	Lansoprazole	13	suppressed
Ropinirole Hcl	Ropinirole Hcl	13	suppressed
Terazosin Hcl	Terazosin Hcl	13	suppressed
Terbinafine Hcl	Terbinafine Hcl	13	suppressed
Zenpep	Lipase/Protease/Amylase	13	suppressed
Icosapent Ethyl	Icosapent Ethyl	12	suppressed
Jardiance	Empagliflozin	12	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	12	suppressed
Naproxen	Naproxen	12	suppressed
Oxazepam	Oxazepam	12	suppressed
Spironolactone	Spironolactone	12	suppressed
Alfuzosin Hcl Er	Alfuzosin Hcl	11	suppressed
Aripiprazole	Aripiprazole	11	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	11	suppressed
Fluconazole	Fluconazole	11	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	11	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	11	suppressed
Niacin Er	Niacin	11	suppressed
Olanzapine	Olanzapine	11	suppressed
Rybelsus	Semaglutide	11	suppressed
Symbicort	Budesonide/Formoterol Fumarate	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