Healthcare provider profile · identity verified

Wallace Duncan, M.D.

Internal Medicine · LITHONIA, GA · NPI 1821153529

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
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	448	51
Amlodipine Besylate	Amlodipine Besylate	397	116
Atorvastatin Calcium	Atorvastatin Calcium	322	100
Hydrochlorothiazide	Hydrochlorothiazide	249	71
Alprazolam	Alprazolam	225	42
Losartan Potassium	Losartan Potassium	225	68
Simvastatin	Simvastatin	221	65
Metformin Hcl	Metformin Hcl	198	67
Ibuprofen	Ibuprofen	193	63
Omeprazole	Omeprazole	193	61
Potassium Chloride	Potassium Chloride	189	50
Lisinopril	Lisinopril	187	58
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	173	36
Albuterol Sulfate Hfa	Albuterol Sulfate	161	45
Tamsulosin Hcl	Tamsulosin Hcl	158	50
Gabapentin	Gabapentin	157	48
Azithromycin	Azithromycin	150	102
Tizanidine Hcl	Tizanidine Hcl	148	40
Triamcinolone Acetonide	Triamcinolone Acetonide	141	48
Amoxicillin	Amoxicillin	135	67
Ozempic	Semaglutide	129	21
Diclofenac Sodium	Diclofenac Sodium	126	47
Furosemide	Furosemide	124	35
Metoprolol Succinate	Metoprolol Succinate	115	33
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	113	28
Glipizide	Glipizide	112	34
Tramadol Hcl	Tramadol Hcl	109	34
Zolpidem Tartrate	Zolpidem Tartrate	98	28
Levothyroxine Sodium	Levothyroxine Sodium	95	26
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	89	24
Eliquis	Apixaban	89	22
Prednisone	Prednisone	88	29
Temazepam	Temazepam	88	25
Allopurinol	Allopurinol	86	26
Meloxicam	Meloxicam	83	31
Ciprofloxacin Hcl	Ciprofloxacin Hcl	82	61
Pantoprazole Sodium	Pantoprazole Sodium	81	25
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	80	24
Rosuvastatin Calcium	Rosuvastatin Calcium	77	27
Carvedilol	Carvedilol	76	23
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	71	21
Linzess	Linaclotide	67	20
Nifedipine Er	Nifedipine	63	17
Fluticasone Propionate	Fluticasone Propionate	62	23
Olmesartan Medoxomil	Olmesartan Medoxomil	59	16
Fluconazole	Fluconazole	56	25
Clopidogrel	Clopidogrel Bisulfate	55	16
Naproxen	Naproxen	53	16
Glipizide-Metformin	Glipizide/Metformin Hcl	52	18
Metoprolol Tartrate	Metoprolol Tartrate	52	17
Colchicine	Colchicine	49	16
Escitalopram Oxalate	Escitalopram Oxalate	49	15
Meclizine Hcl	Meclizine Hcl	48	17
Atenolol	Atenolol	46	14
Esomeprazole Magnesium	Esomeprazole Magnesium	46	12
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	46	30
Hydralazine Hcl	Hydralazine Hcl	45	16
Methylprednisolone	Methylprednisolone	44	23
Verapamil Er	Verapamil Hcl	44	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	42	20
Olmesartan-Amlodipine-Hctz	Olmesartan/Amlodipin/Hcthiazid	42	suppressed
Indomethacin	Indomethacin	39	suppressed
Pregabalin	Pregabalin	39	12
Dropsafe Prep Pads	Alcohol Antiseptic Pads	38	suppressed
Glipizide Er	Glipizide	37	12
Sertraline Hcl	Sertraline Hcl	37	11
Trazodone Hcl	Trazodone Hcl	36	suppressed
Ezetimibe	Ezetimibe	34	12
Ondansetron Odt	Ondansetron	34	20
Valacyclovir	Valacyclovir Hcl	34	15
Pravastatin Sodium	Pravastatin Sodium	33	suppressed
Spironolactone	Spironolactone	33	11
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	32	suppressed
Diazepam	Diazepam	31	suppressed
Famotidine	Famotidine	31	suppressed
Olmesartan-Hydrochlorothiazide	Olmesartan/Hydrochlorothiazide	31	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	29	suppressed
Xarelto	Rivaroxaban	29	suppressed
Oxycodone Hcl	Oxycodone Hcl	28	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	27	suppressed
Chlorthalidone	Chlorthalidone	27	suppressed
Latanoprost	Latanoprost	27	suppressed
Ketoconazole	Ketoconazole	26	13
Mupirocin	Mupirocin	26	18
Oxycontin	Oxycodone Hcl	26	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	25	suppressed
Clonidine Hcl	Clonidine Hcl	25	suppressed
Cyproheptadine Hcl	Cyproheptadine Hcl	25	suppressed
Januvia	Sitagliptin Phosphate	24	suppressed
Telmisartan	Telmisartan	24	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	23	20
Fenofibrate	Fenofibrate	23	suppressed
Ibu	Ibuprofen	23	suppressed
Jardiance	Empagliflozin	23	suppressed
Verapamil Sr	Verapamil Hcl	23	suppressed
Dorzolamide-Timolol	Dorzolamide Hcl/Timolol Maleat	22	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	22	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	21	suppressed
Lidocaine	Lidocaine	21	suppressed
Morphine Sulfate Er	Morphine Sulfate	21	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	21	suppressed
Paroxetine Hcl	Paroxetine Hcl	21	suppressed
Donepezil Hcl	Donepezil Hcl	20	suppressed
Glyburide-Metformin Hcl	Glyburide/Metformin Hcl	20	suppressed
Mirtazapine	Mirtazapine	20	suppressed
Warfarin Sodium	Warfarin Sodium	20	suppressed
Finasteride	Finasteride	19	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	19	suppressed
Acyclovir	Acyclovir	18	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	18	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	18	suppressed
Benazepril Hcl	Benazepril Hcl	17	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	17	suppressed
Irbesartan	Irbesartan	17	suppressed
Levemir Flexpen	Insulin Detemir	17	suppressed
Memantine Hcl	Memantine Hcl	17	suppressed
Montelukast Sodium	Montelukast Sodium	17	suppressed
Mounjaro	Tirzepatide	17	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	17	suppressed
Baclofen	Baclofen	16	suppressed
Clonazepam	Clonazepam	16	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	16	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	16	suppressed
Nitroglycerin	Nitroglycerin	16	suppressed
Ondansetron Hcl	Ondansetron Hcl	16	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	16	16
Topiramate	Topiramate	16	suppressed
Cephalexin	Cephalexin	15	13
Clobetasol Propionate	Clobetasol Propionate	15	suppressed
Glimepiride	Glimepiride	15	suppressed
Terazosin Hcl	Terazosin Hcl	15	suppressed
Hydrocortisone	Hydrocortisone	14	suppressed
Labetalol Hcl	Labetalol Hcl	14	suppressed
Valsartan	Valsartan	14	suppressed
Atenolol-Chlorthalidone	Atenolol/Chlorthalidone	13	suppressed
Nebivolol Hcl	Nebivolol Hcl	13	suppressed
Testosterone Cypionate	Testosterone Cypionate	13	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	13	suppressed
Droplet Pen Needle	Pen Needle, Diabetic	12	suppressed
Lovastatin	Lovastatin	12	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	12	11
Risperidone	Risperidone	12	suppressed
Bupropion Xl	Bupropion Hcl	11	suppressed
Celecoxib	Celecoxib	11	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	11	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	11	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	11	suppressed
Metformin Hcl Er	Metformin Hcl	11	suppressed
Myrbetriq	Mirabegron	11	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	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