Healthcare provider profile · identity verified

David Hammond, M.D.

Internal Medicine · SAINT LOUIS, MO · NPI 1437140639

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	546	157
Lisinopril	Lisinopril	290	82
Metoprolol Succinate	Metoprolol Succinate	252	73
Amlodipine Besylate	Amlodipine Besylate	246	69
Simvastatin	Simvastatin	188	51
Levothyroxine Sodium	Levothyroxine Sodium	184	52
Tramadol Hcl	Tramadol Hcl	166	57
Omeprazole	Omeprazole	165	49
Meloxicam	Meloxicam	147	48
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	144	40
Diclofenac Sodium	Diclofenac Sodium	143	39
Metformin Hcl	Metformin Hcl	143	39
Gabapentin	Gabapentin	142	41
Benazepril Hcl	Benazepril Hcl	134	38
Pantoprazole Sodium	Pantoprazole Sodium	133	45
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	122	35
Rosuvastatin Calcium	Rosuvastatin Calcium	112	31
Tamsulosin Hcl	Tamsulosin Hcl	110	35
Finasteride	Finasteride	103	29
Hydrochlorothiazide	Hydrochlorothiazide	99	32
Losartan Potassium	Losartan Potassium	96	31
Glimepiride	Glimepiride	84	24
Albuterol Sulfate Hfa	Albuterol Sulfate	79	24
Allopurinol	Allopurinol	79	21
Eliquis	Apixaban	78	20
Trazodone Hcl	Trazodone Hcl	73	25
Alprazolam	Alprazolam	70	37
Escitalopram Oxalate	Escitalopram Oxalate	68	23
Metoprolol Tartrate	Metoprolol Tartrate	68	21
Furosemide	Furosemide	66	17
Pioglitazone Hcl	Pioglitazone Hcl	61	17
Ezetimibe	Ezetimibe	58	19
Clopidogrel	Clopidogrel Bisulfate	54	16
Zolpidem Tartrate	Zolpidem Tartrate	53	21
Atenolol	Atenolol	52	14
Fluticasone Propionate	Fluticasone Propionate	51	20
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	50	23
Sildenafil Citrate	Sildenafil Citrate	50	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	50	12
Alendronate Sodium	Alendronate Sodium	47	13
Duloxetine Hcl	Duloxetine Hcl	46	suppressed
Sertraline Hcl	Sertraline Hcl	43	12
Montelukast Sodium	Montelukast Sodium	42	suppressed
Potassium Chloride	Potassium Chloride	42	15
Warfarin Sodium	Warfarin Sodium	40	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	38	suppressed
Spironolactone	Spironolactone	38	12
Bupropion Xl	Bupropion Hcl	36	11
Carvedilol	Carvedilol	35	11
Fenofibrate	Fenofibrate	35	suppressed
Risedronate Sodium	Risedronate Sodium	35	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	33	29
Glipizide	Glipizide	33	11
Prednisone	Prednisone	32	25
Buspirone Hcl	Buspirone Hcl	31	suppressed
Citalopram Hbr	Citalopram Hydrobromide	31	suppressed
Famotidine	Famotidine	31	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	30	13
Ozempic	Semaglutide	29	12
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	28	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	26	suppressed
Lovastatin	Lovastatin	26	suppressed
Mirtazapine	Mirtazapine	26	suppressed
Breo Ellipta	Fluticasone/Vilanterol	25	suppressed
Diazepam	Diazepam	25	suppressed
Naproxen	Naproxen	24	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	23	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	23	16
Amitriptyline Hcl	Amitriptyline Hcl	22	suppressed
Amoxicillin	Amoxicillin	22	11
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	22	suppressed
Methocarbamol	Methocarbamol	22	suppressed
Nystatin-Triamcinolone	Nystatin/Triamcinolone Acet	22	11
Pregabalin	Pregabalin	22	suppressed
Abrysvo	Rsv Vacc, Pref A And Pref B/Pf	20	20
Ibuprofen	Ibuprofen	20	suppressed
Semglee (Yfgn) Pen	Insulin Glargine-Yfgn	20	suppressed
Valacyclovir	Valacyclovir Hcl	20	suppressed
Metformin Hcl Er	Metformin Hcl	19	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	19	suppressed
Aripiprazole	Aripiprazole	18	suppressed
Ondansetron Hcl	Ondansetron Hcl	18	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	17	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	16	suppressed
Donepezil Hcl	Donepezil Hcl	16	suppressed
Midodrine Hcl	Midodrine Hcl	16	suppressed
Verapamil Er	Verapamil Hcl	16	suppressed
Alfuzosin Hcl Er	Alfuzosin Hcl	15	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	15	suppressed
Celecoxib	Celecoxib	15	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	15	suppressed
Torsemide	Torsemide	15	suppressed
Xarelto	Rivaroxaban	15	suppressed
Arexvy	Rsvpref3 Antigen/As01e/Pf	14	14
Isosorbide Mononitrate Er	Isosorbide Mononitrate	14	suppressed
Ketoconazole	Ketoconazole	14	suppressed
Propranolol Hcl Er	Propranolol Hcl	14	suppressed
Trulicity	Dulaglutide	14	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	13	suppressed
Fesoterodine Fumarate Er	Fesoterodine Fumarate	13	suppressed
Indapamide	Indapamide	13	suppressed
Novolin 70-30 Flexpen	Insulin Nph Hum/Reg Insulin Hm	13	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	13	suppressed
Carbamazepine Er	Carbamazepine	12	suppressed
Januvia	Sitagliptin Phosphate	12	suppressed
Klor-Con M20	Potassium Chloride	12	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	12	suppressed
Levetiracetam	Levetiracetam	12	suppressed
Metronidazole	Metronidazole	12	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	12	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	12	suppressed
Clobetasol Propionate	Clobetasol Propionate	11	suppressed
Ibandronate Sodium	Ibandronate Sodium	11	suppressed
Niacin Er	Niacin	11	suppressed
Nifedipine Er	Nifedipine	11	suppressed
Nitroglycerin	Nitroglycerin	11	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	11	suppressed
Oxcarbazepine	Oxcarbazepine	11	suppressed
Pravastatin Sodium	Pravastatin Sodium	11	suppressed
Terazosin Hcl	Terazosin Hcl	11	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	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