Healthcare provider profile · identity verified

Mark E Souther, MD

Internal Medicine · NEWPORT NEWS, VA · NPI 1104888692

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	708	196
Amlodipine Besylate	Amlodipine Besylate	463	129
Levothyroxine Sodium	Levothyroxine Sodium	327	81
Omeprazole	Omeprazole	293	88
Losartan Potassium	Losartan Potassium	284	84
Rosuvastatin Calcium	Rosuvastatin Calcium	276	85
Metoprolol Succinate	Metoprolol Succinate	266	72
Escitalopram Oxalate	Escitalopram Oxalate	228	64
Simvastatin	Simvastatin	226	64
Lisinopril	Lisinopril	208	61
Tamsulosin Hcl	Tamsulosin Hcl	208	53
Gabapentin	Gabapentin	200	50
Eliquis	Apixaban	182	35
Potassium Chloride	Potassium Chloride	167	45
Trazodone Hcl	Trazodone Hcl	161	49
Hydrochlorothiazide	Hydrochlorothiazide	145	43
Furosemide	Furosemide	143	47
Ozempic	Semaglutide	141	17
Pantoprazole Sodium	Pantoprazole Sodium	131	44
Carvedilol	Carvedilol	123	31
Metformin Hcl Er	Metformin Hcl	123	42
Alprazolam	Alprazolam	114	27
Allopurinol	Allopurinol	111	28
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	103	20
Sertraline Hcl	Sertraline Hcl	99	25
Clopidogrel	Clopidogrel Bisulfate	90	30
Fluticasone Propionate	Fluticasone Propionate	90	47
Bupropion Xl	Bupropion Hcl	89	26
Metformin Hcl	Metformin Hcl	89	25
Valsartan	Valsartan	83	21
Prednisone	Prednisone	82	46
Pravastatin Sodium	Pravastatin Sodium	81	24
Synthroid	Levothyroxine Sodium	81	20
Famotidine	Famotidine	70	18
Donepezil Hcl	Donepezil Hcl	68	15
Albuterol Sulfate Hfa	Albuterol Sulfate	63	34
Myrbetriq	Mirabegron	63	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	62	47
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	61	19
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	61	16
Xarelto	Rivaroxaban	60	13
Lorazepam	Lorazepam	58	18
Isosorbide Mononitrate Er	Isosorbide Mononitrate	57	15
Atenolol	Atenolol	55	15
Zolpidem Tartrate	Zolpidem Tartrate	54	13
Nitroglycerin	Nitroglycerin	52	31
Cephalexin	Cephalexin	50	41
Mirtazapine	Mirtazapine	49	12
Memantine Hcl	Memantine Hcl	48	11
Ramipril	Ramipril	47	12
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	45	12
Finasteride	Finasteride	43	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	43	11
Montelukast Sodium	Montelukast Sodium	43	11
Ezetimibe	Ezetimibe	39	13
Meloxicam	Meloxicam	38	18
Trulicity	Dulaglutide	38	suppressed
Hydralazine Hcl	Hydralazine Hcl	37	suppressed
Clonazepam	Clonazepam	36	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	36	suppressed
Celecoxib	Celecoxib	35	suppressed
Humalog Kwikpen U-100	Insulin Lispro	35	suppressed
Jardiance	Empagliflozin	35	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	35	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	35	suppressed
Duloxetine Hcl	Duloxetine Hcl	34	suppressed
Metoprolol Tartrate	Metoprolol Tartrate	34	suppressed
Nebivolol Hcl	Nebivolol Hcl	34	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	33	29
Novolog Flexpen	Insulin Aspart	31	suppressed
Citalopram Hbr	Citalopram Hydrobromide	30	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	30	suppressed
Lansoprazole	Lansoprazole	29	suppressed
Spironolactone	Spironolactone	27	suppressed
Baclofen	Baclofen	26	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	25	suppressed
Breo Ellipta	Fluticasone/Vilanterol	25	suppressed
Dutasteride	Dutasteride	25	suppressed
Pregabalin	Pregabalin	25	suppressed
Alendronate Sodium	Alendronate Sodium	24	suppressed
Amoxicillin	Amoxicillin	23	19
Fenofibrate	Fenofibrate	23	suppressed
Sucralfate	Sucralfate	23	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	22	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	22	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	22	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	22	suppressed
Azithromycin	Azithromycin	21	11
Buspirone Hcl	Buspirone Hcl	21	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	21	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	21	12
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	20	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	19	suppressed
Warfarin Sodium	Warfarin Sodium	19	suppressed
Fenofibric Acid	Fenofibric Acid (Choline)	18	suppressed
Methimazole	Methimazole	18	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	17	suppressed
Farxiga	Dapagliflozin Propanediol	17	suppressed
Irbesartan	Irbesartan	17	suppressed
Premarin	Estrogens, Conjugated	17	suppressed
Bupropion Hcl Sr	Bupropion Hcl	16	suppressed
Fluconazole	Fluconazole	16	13
Levetiracetam	Levetiracetam	16	suppressed
Meclizine Hcl	Meclizine Hcl	16	13
Ondansetron Odt	Ondansetron	16	suppressed
Enalapril Maleate	Enalapril Maleate	15	suppressed
Ondansetron Hcl	Ondansetron Hcl	15	suppressed
Chlorthalidone	Chlorthalidone	14	suppressed
Lidocaine	Lidocaine	14	suppressed
Nystatin	Nystatin	14	suppressed
Cefdinir	Cefdinir	13	13
Ciprofloxacin Hcl	Ciprofloxacin Hcl	13	11
Dexlansoprazole Dr	Dexlansoprazole	13	suppressed
Ezetimibe-Simvastatin	Ezetimibe/Simvastatin	13	suppressed
Ipratropium Bromide	Ipratropium Bromide	13	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	13	suppressed
Azelastine Hcl	Azelastine Hcl	12	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	12	suppressed
Diclofenac Sodium	Diclofenac Sodium	12	suppressed
Enoxaparin Sodium	Enoxaparin Sodium	12	suppressed
Labetalol Hcl	Labetalol Hcl	12	suppressed
Modafinil	Modafinil	12	suppressed
Semglee (Yfgn) Pen	Insulin Glargine-Yfgn	12	suppressed
Admelog Solostar	Insulin Lispro	11	suppressed
Advair Hfa	Fluticasone Propion/Salmeterol	11	suppressed
Aripiprazole	Aripiprazole	11	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	11	suppressed
Colestipol Hcl	Colestipol Hcl	11	suppressed
Phenobarbital	Phenobarbital	11	suppressed
Spiriva Handihaler	Tiotropium Bromide	11	suppressed
Symbicort	Budesonide/Formoterol Fumarate	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