Healthcare provider profile · identity verified

Merris A Stambaugh, MD

Family Practice · MARTINSVILLE, VA · NPI 1295707586

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	631	204
Atorvastatin Calcium	Atorvastatin Calcium	570	183
Omeprazole	Omeprazole	462	132
Metformin Hcl	Metformin Hcl	336	106
Levothyroxine Sodium	Levothyroxine Sodium	303	96
Lisinopril	Lisinopril	289	98
Gabapentin	Gabapentin	265	94
Simvastatin	Simvastatin	257	86
Losartan Potassium	Losartan Potassium	234	77
Hydrochlorothiazide	Hydrochlorothiazide	230	68
Carvedilol	Carvedilol	216	72
Rosuvastatin Calcium	Rosuvastatin Calcium	174	59
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	162	48
Metoprolol Tartrate	Metoprolol Tartrate	162	54
Albuterol Sulfate Hfa	Albuterol Sulfate	148	40
Furosemide	Furosemide	143	54
Sertraline Hcl	Sertraline Hcl	129	40
Allopurinol	Allopurinol	128	44
Metformin Hcl Er	Metformin Hcl	128	45
Escitalopram Oxalate	Escitalopram Oxalate	127	41
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	124	45
Pantoprazole Sodium	Pantoprazole Sodium	120	46
Tamsulosin Hcl	Tamsulosin Hcl	115	40
Eliquis	Apixaban	114	37
Fluticasone Propionate	Fluticasone Propionate	109	42
Glimepiride	Glimepiride	105	36
Pravastatin Sodium	Pravastatin Sodium	101	32
Trazodone Hcl	Trazodone Hcl	89	31
Hydralazine Hcl	Hydralazine Hcl	87	26
Clopidogrel	Clopidogrel Bisulfate	82	27
Potassium Chloride	Potassium Chloride	80	32
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	78	27
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	76	27
Warfarin Sodium	Warfarin Sodium	70	24
Glipizide	Glipizide	65	22
Metoprolol Succinate	Metoprolol Succinate	63	26
Ozempic	Semaglutide	63	19
Ventolin Hfa	Albuterol Sulfate	57	14
Donepezil Hcl	Donepezil Hcl	55	15
Tramadol Hcl	Tramadol Hcl	55	12
Ibuprofen	Ibuprofen	54	13
Buspirone Hcl	Buspirone Hcl	51	20
Diclofenac Sodium	Diclofenac Sodium	51	20
Famotidine	Famotidine	51	18
Meloxicam	Meloxicam	49	14
Atenolol	Atenolol	48	19
Mirtazapine	Mirtazapine	46	12
Spironolactone	Spironolactone	46	17
Pregabalin	Pregabalin	45	11
Duloxetine Hcl	Duloxetine Hcl	44	15
Finasteride	Finasteride	44	11
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	44	21
Citalopram Hbr	Citalopram Hydrobromide	40	16
Clonidine Hcl	Clonidine Hcl	40	suppressed
Jardiance	Empagliflozin	40	12
Paroxetine Hcl	Paroxetine Hcl	40	12
Quetiapine Fumarate	Quetiapine Fumarate	40	12
Pioglitazone Hcl	Pioglitazone Hcl	39	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	38	11
Baclofen	Baclofen	37	12
Montelukast Sodium	Montelukast Sodium	37	17
Ropinirole Hcl	Ropinirole Hcl	36	11
Enalapril Maleate	Enalapril Maleate	34	11
Glipizide Er	Glipizide	34	suppressed
Lovastatin	Lovastatin	34	14
Tizanidine Hcl	Tizanidine Hcl	33	11
Ezetimibe	Ezetimibe	32	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	31	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	30	11
Levetiracetam	Levetiracetam	30	suppressed
Symbicort	Budesonide/Formoterol Fumarate	30	suppressed
Valsartan	Valsartan	29	suppressed
Bupropion Xl	Bupropion Hcl	28	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	28	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	28	15
Labetalol Hcl	Labetalol Hcl	27	suppressed
Azithromycin	Azithromycin	26	25
Meclizine Hcl	Meclizine Hcl	25	14
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	24	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	24	12
Benazepril Hcl	Benazepril Hcl	23	suppressed
Droplet Pen Needle	Pen Needle, Diabetic	23	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	22	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	22	11
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	22	suppressed
Trulicity	Dulaglutide	22	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	21	suppressed
Irbesartan-Hydrochlorothiazide	Irbesartan/Hydrochlorothiazide	21	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	21	suppressed
Ramipril	Ramipril	20	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	20	17
Alprazolam	Alprazolam	19	17
Chlorthalidone	Chlorthalidone	19	suppressed
Colchicine	Colchicine	19	suppressed
Telmisartan	Telmisartan	19	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	19	suppressed
Alendronate Sodium	Alendronate Sodium	18	suppressed
Risperidone	Risperidone	18	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	18	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	17	suppressed
Klor-Con M10	Potassium Chloride	17	suppressed
Benazepril-Hydrochlorothiazide	Benazepril/Hydrochlorothiazide	16	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	16	suppressed
Ipratropium Bromide	Ipratropium Bromide	16	suppressed
Januvia	Sitagliptin Phosphate	16	suppressed
Lorazepam	Lorazepam	16	suppressed
Memantine Hcl	Memantine Hcl	16	suppressed
Naproxen	Naproxen	16	suppressed
Novolog Flexpen	Insulin Aspart	16	suppressed
Nystatin	Nystatin	16	11
Tresiba Flextouch U-100	Insulin Degludec	16	suppressed
Bupropion Hcl Sr	Bupropion Hcl	15	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	15	suppressed
Levemir Flexpen	Insulin Detemir	15	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	15	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	15	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	14	suppressed
Diazepam	Diazepam	14	suppressed
Isosorbide Dinitrate	Isosorbide Dinitrate	14	suppressed
Prednisone	Prednisone	14	11
Propranolol Hcl	Propranolol Hcl	14	suppressed
Terazosin Hcl	Terazosin Hcl	14	suppressed
Verapamil Er	Verapamil Hcl	14	suppressed
Victoza 3-Pak	Liraglutide	14	suppressed
Klor-Con M20	Potassium Chloride	13	suppressed
Sucralfate	Sucralfate	13	suppressed
Cilostazol	Cilostazol	12	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	12	suppressed
Entresto	Sacubitril/Valsartan	12	suppressed
Fenofibrate	Fenofibrate,micronized	12	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	12	suppressed
Rizatriptan	Rizatriptan Benzoate	12	suppressed
Xarelto	Rivaroxaban	12	suppressed
Fentanyl	Fentanyl	11	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	11	suppressed
Janumet Xr	Sitagliptin Phos/Metformin Hcl	11	suppressed
Pen Needle	Pen Needle, Diabetic	11	suppressed
Victoza 2-Pak	Liraglutide	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