Healthcare provider profile · identity verified

David R Williams, MD

Family Practice · BELTON, MO · NPI 1275528895

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	498	168
Levothyroxine Sodium	Levothyroxine Sodium	348	103
Amlodipine Besylate	Amlodipine Besylate	311	95
Omeprazole	Omeprazole	288	88
Metoprolol Succinate	Metoprolol Succinate	286	89
Lisinopril	Lisinopril	270	98
Losartan Potassium	Losartan Potassium	258	85
Pantoprazole Sodium	Pantoprazole Sodium	232	78
Metformin Hcl Er	Metformin Hcl	178	60
Simvastatin	Simvastatin	150	48
Hydrochlorothiazide	Hydrochlorothiazide	148	51
Tamsulosin Hcl	Tamsulosin Hcl	143	50
Gabapentin	Gabapentin	136	43
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	135	40
Meloxicam	Meloxicam	126	47
Rosuvastatin Calcium	Rosuvastatin Calcium	126	42
Metformin Hcl	Metformin Hcl	115	46
Furosemide	Furosemide	105	39
Potassium Chloride	Potassium Chloride	105	34
Lovastatin	Lovastatin	104	35
Albuterol Sulfate Hfa	Albuterol Sulfate	95	41
Finasteride	Finasteride	81	27
Allopurinol	Allopurinol	75	26
Trazodone Hcl	Trazodone Hcl	75	25
Sertraline Hcl	Sertraline Hcl	72	22
Carvedilol	Carvedilol	70	31
Clopidogrel	Clopidogrel Bisulfate	66	23
Montelukast Sodium	Montelukast Sodium	64	18
Metoprolol Tartrate	Metoprolol Tartrate	63	22
Fluticasone Propionate	Fluticasone Propionate	62	23
Escitalopram Oxalate	Escitalopram Oxalate	61	20
Tramadol Hcl	Tramadol Hcl	61	30
Triamcinolone Acetonide	Triamcinolone Acetonide	61	20
Glimepiride	Glimepiride	55	19
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	55	16
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	54	14
Doxazosin Mesylate	Doxazosin Mesylate	50	16
Alendronate Sodium	Alendronate Sodium	49	18
Warfarin Sodium	Warfarin Sodium	48	11
Eliquis	Apixaban	46	15
Fenofibrate	Fenofibrate	45	14
Jardiance	Empagliflozin	45	15
Pravastatin Sodium	Pravastatin Sodium	43	15
Citalopram Hbr	Citalopram Hydrobromide	41	13
Esomeprazole Magnesium	Esomeprazole Magnesium	41	13
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	40	22
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	39	13
Pregabalin	Pregabalin	36	15
Xarelto	Rivaroxaban	36	suppressed
Atenolol	Atenolol	34	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	34	11
Donepezil Hcl	Donepezil Hcl	33	11
Alprazolam	Alprazolam	32	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	32	15
Duloxetine Hcl	Duloxetine Hcl	31	14
Prednisone	Prednisone	31	25
Levetiracetam	Levetiracetam	29	suppressed
Paroxetine Hcl	Paroxetine Hcl	29	suppressed
Famotidine	Famotidine	28	suppressed
Ozempic	Semaglutide	28	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	27	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	27	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	27	suppressed
Memantine Hcl	Memantine Hcl	26	suppressed
Glipizide Er	Glipizide	24	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	23	suppressed
Spironolactone	Spironolactone	23	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	22	suppressed
Ezetimibe	Ezetimibe	22	suppressed
Glipizide	Glipizide	22	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	22	17
Januvia	Sitagliptin Phosphate	22	suppressed
Ondansetron Hcl	Ondansetron Hcl	22	suppressed
Tizanidine Hcl	Tizanidine Hcl	22	suppressed
Mirtazapine	Mirtazapine	20	suppressed
Azithromycin	Azithromycin	19	19
Diclofenac Sodium	Diclofenac Sodium	19	suppressed
Farxiga	Dapagliflozin Propanediol	19	suppressed
Methylprednisolone	Methylprednisolone	19	19
Topiramate	Topiramate	19	suppressed
Clonazepam	Clonazepam	18	suppressed
Myrbetriq	Mirabegron	18	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	18	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	18	suppressed
Arexvy	Rsvpref3 Antigen/As01e/Pf	17	17
M-Natal Plus	Pnv,calcium 72/Iron/Folic Acid	17	suppressed
Naproxen	Naproxen	17	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	16	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	16	suppressed
Felodipine Er	Felodipine	16	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	16	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	16	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	16	15
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	16	suppressed
Dutasteride	Dutasteride	15	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	15	suppressed
Latanoprost	Latanoprost	14	suppressed
Meclizine Hcl	Meclizine Hcl	14	suppressed
Valacyclovir	Valacyclovir Hcl	14	suppressed
Ammonium Lactate	Ammonium Lactate	13	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	13	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	13	suppressed
Ramipril	Ramipril	13	suppressed
Rizatriptan	Rizatriptan Benzoate	13	suppressed
Verapamil Er	Verapamil Hcl	13	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	12	12
Diltiazem Hcl	Diltiazem Hcl	12	suppressed
Fluconazole	Fluconazole	12	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	12	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	12	suppressed
Lamotrigine	Lamotrigine	12	suppressed
Lansoprazole	Lansoprazole	12	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	12	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	12	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	12	suppressed
Risperidone	Risperidone	12	suppressed
Tamoxifen Citrate	Tamoxifen Citrate	12	suppressed
Terazosin Hcl	Terazosin Hcl	12	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	12	suppressed
Baclofen	Baclofen	11	suppressed
Diazepam	Diazepam	11	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	11	suppressed
Ibuprofen	Ibuprofen	11	suppressed
Novolog Flexpen	Insulin Aspart	11	suppressed
Nystatin	Nystatin	11	suppressed
Trulicity	Dulaglutide	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