Healthcare provider profile · identity verified

David Christen Larson, MD

Family Practice · CLAY CENTER, KS · NPI 1598987018

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	773	139
Levothyroxine Sodium	Levothyroxine Sodium	568	70
Omeprazole	Omeprazole	466	69
Losartan Potassium	Losartan Potassium	375	69
Amlodipine Besylate	Amlodipine Besylate	236	50
Eliquis	Apixaban	236	26
Metoprolol Succinate	Metoprolol Succinate	188	28
Pantoprazole Sodium	Pantoprazole Sodium	174	29
Carvedilol	Carvedilol	166	28
Hydrochlorothiazide	Hydrochlorothiazide	165	37
Furosemide	Furosemide	160	23
Olmesartan Medoxomil	Olmesartan Medoxomil	158	29
Warfarin Sodium	Warfarin Sodium	147	14
Rosuvastatin Calcium	Rosuvastatin Calcium	140	28
Donepezil Hcl	Donepezil Hcl	138	12
Lisinopril	Lisinopril	137	28
Gabapentin	Gabapentin	134	29
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	129	suppressed
Montelukast Sodium	Montelukast Sodium	128	19
Escitalopram Oxalate	Escitalopram Oxalate	123	14
Famotidine	Famotidine	120	14
Duloxetine Hcl	Duloxetine Hcl	118	19
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	109	32
Prednisone	Prednisone	105	59
Bumetanide	Bumetanide	102	15
Tamsulosin Hcl	Tamsulosin Hcl	102	18
Sertraline Hcl	Sertraline Hcl	97	12
Tramadol Hcl	Tramadol Hcl	95	17
Clopidogrel	Clopidogrel Bisulfate	92	14
Allopurinol	Allopurinol	84	15
Metformin Hcl Er	Metformin Hcl	84	22
Spironolactone	Spironolactone	83	18
Potassium Chloride	Potassium Chloride	82	13
Lorazepam	Lorazepam	81	18
Memantine Hcl	Memantine Hcl	81	suppressed
Metoprolol Tartrate	Metoprolol Tartrate	80	18
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	77	14
Fentanyl	Fentanyl	74	suppressed
Chlorthalidone	Chlorthalidone	70	13
Albuterol Sulfate Hfa	Albuterol Sulfate	69	28
Meloxicam	Meloxicam	67	17
Celecoxib	Celecoxib	65	22
Trazodone Hcl	Trazodone Hcl	65	13
Ropinirole Hcl	Ropinirole Hcl	63	suppressed
Solifenacin Succinate	Solifenacin Succinate	61	11
Zolpidem Tartrate	Zolpidem Tartrate	59	12
Jardiance	Empagliflozin	56	13
Pravastatin Sodium	Pravastatin Sodium	56	14
Alprazolam	Alprazolam	55	13
Metformin Hcl	Metformin Hcl	54	14
Simvastatin	Simvastatin	53	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	52	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	52	39
Mirtazapine	Mirtazapine	52	13
Xarelto	Rivaroxaban	51	suppressed
Desvenlafaxine Succinate Er	Desvenlafaxine Succinate	49	suppressed
Flecainide Acetate	Flecainide Acetate	48	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	47	13
Pregabalin	Pregabalin	47	suppressed
Amiodarone Hcl	Amiodarone Hcl	46	suppressed
Temazepam	Temazepam	46	suppressed
Finasteride	Finasteride	45	suppressed
Tresiba Flextouch U-200	Insulin Degludec	45	suppressed
Farxiga	Dapagliflozin Propanediol	44	suppressed
Eplerenone	Eplerenone	43	suppressed
Fluticasone Propionate	Fluticasone Propionate	40	14
Hydroxyzine Hcl	Hydroxyzine Hcl	40	suppressed
Cefdinir	Cefdinir	39	30
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	39	suppressed
Synthroid	Levothyroxine Sodium	39	suppressed
Topiramate	Topiramate	38	suppressed
Ozempic	Semaglutide	37	suppressed
Glipizide Er	Glipizide	36	suppressed
Tizanidine Hcl	Tizanidine Hcl	36	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	35	21
Alendronate Sodium	Alendronate Sodium	34	11
Alfuzosin Hcl Er	Alfuzosin Hcl	34	suppressed
Clonazepam	Clonazepam	34	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	34	suppressed
Calcitriol	Calcitriol	32	suppressed
Glipizide	Glipizide	32	suppressed
Primidone	Primidone	32	suppressed
Benazepril Hcl	Benazepril Hcl	31	suppressed
Cephalexin	Cephalexin	31	23
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	31	suppressed
Sotalol	Sotalol Hcl	30	suppressed
Estradiol	Estradiol	29	suppressed
Januvia	Sitagliptin Phosphate	29	suppressed
Ezetimibe	Ezetimibe	28	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	27	20
Levetiracetam	Levetiracetam	27	suppressed
Myrbetriq	Mirabegron	27	suppressed
Fludrocortisone Acetate	Fludrocortisone Acetate	26	suppressed
Midodrine Hcl	Midodrine Hcl	26	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	25	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	25	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	25	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	24	22
Oxycodone Hcl	Oxycodone Hcl	23	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	22	suppressed
Humalog Kwikpen U-100	Insulin Lispro	21	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	21	suppressed
Latanoprost	Latanoprost	20	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	20	suppressed
Linzess	Linaclotide	19	suppressed
Tresiba Flextouch U-100	Insulin Degludec	19	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	19	17
Venlafaxine Hcl Er	Venlafaxine Hcl	19	suppressed
Pitavastatin Calcium	Pitavastatin Calcium	18	suppressed
Propranolol Hcl	Propranolol Hcl	18	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	17	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	17	suppressed
Citalopram Hbr	Citalopram Hydrobromide	17	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	17	suppressed
Ibuprofen	Ibuprofen	17	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	17	suppressed
Methylprednisolone	Methylprednisolone	17	16
Azithromycin	Azithromycin	16	suppressed
Bisoprolol-Hydrochlorothiazide	Bisoprolol/Hydrochlorothiazide	16	suppressed
Breztri Aerosphere	Budesonide/Glycopyr/Formoterol	16	suppressed
Levofloxacin	Levofloxacin	16	12
Metoclopramide Hcl	Metoclopramide Hcl	16	suppressed
Morphine Sulfate Er	Morphine Sulfate	16	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	16	suppressed
Silodosin	Silodosin	15	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	14	suppressed
Droxidopa	Droxidopa	14	suppressed
Ipratropium Bromide	Ipratropium Bromide	14	suppressed
Theophylline Er	Theophylline Anhydrous	14	suppressed
Baclofen	Baclofen	13	suppressed
Invokana	Canagliflozin	13	suppressed
Rybelsus	Semaglutide	13	suppressed
Unifine Pentips	Pen Needle, Diabetic	13	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	12	suppressed
Ampicillin Trihydrate	Ampicillin Trihydrate	12	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	12	suppressed
Bupropion Xl	Bupropion Hcl	12	suppressed
Digoxin	Digoxin	12	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	12	suppressed
Febuxostat	Febuxostat	12	suppressed
Lansoprazole	Lansoprazole	12	suppressed
Risperidone	Risperidone	12	suppressed
Trospium Chloride	Trospium Chloride	12	suppressed
Victoza 3-Pak	Liraglutide	12	suppressed
Bupropion Hcl Sr	Bupropion Hcl	11	suppressed
Fosinopril Sodium	Fosinopril Sodium	11	suppressed
Propranolol Hcl Er	Propranolol Hcl	11	suppressed
Ramipril	Ramipril	11	suppressed
Sucralfate	Sucralfate	11	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	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