Healthcare provider profile · identity verified

David Kent Larson, M.D.

Family Practice · FAIRFIELD, IA · NPI 1891803508

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	284	79
Lisinopril	Lisinopril	233	67
Omeprazole	Omeprazole	229	54
Levothyroxine Sodium	Levothyroxine Sodium	183	43
Amlodipine Besylate	Amlodipine Besylate	177	56
Metoprolol Succinate	Metoprolol Succinate	164	46
Losartan Potassium	Losartan Potassium	162	43
Hydrochlorothiazide	Hydrochlorothiazide	159	44
Furosemide	Furosemide	134	33
Metformin Hcl	Metformin Hcl	120	31
Tamsulosin Hcl	Tamsulosin Hcl	118	32
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	111	23
Eliquis	Apixaban	103	18
Albuterol Sulfate Hfa	Albuterol Sulfate	101	26
Tramadol Hcl	Tramadol Hcl	93	20
Gabapentin	Gabapentin	88	24
Alprazolam	Alprazolam	85	15
Glipizide Er	Glipizide	83	16
Venlafaxine Hcl Er	Venlafaxine Hcl	78	13
Pioglitazone Hcl	Pioglitazone Hcl	76	17
Potassium Chloride	Potassium Chloride	70	18
Pantoprazole Sodium	Pantoprazole Sodium	69	24
Pregabalin	Pregabalin	69	14
Metoprolol Tartrate	Metoprolol Tartrate	68	20
Montelukast Sodium	Montelukast Sodium	65	19
Azithromycin	Azithromycin	64	49
Allopurinol	Allopurinol	62	18
Fluoxetine Hcl	Fluoxetine Hcl	60	14
Trazodone Hcl	Trazodone Hcl	59	17
Simvastatin	Simvastatin	57	16
Atenolol	Atenolol	52	suppressed
Fluticasone Propionate	Fluticasone Propionate	52	19
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	49	suppressed
Clopidogrel	Clopidogrel Bisulfate	48	12
Januvia	Sitagliptin Phosphate	48	suppressed
Metformin Hcl Er	Metformin Hcl	48	11
Rosuvastatin Calcium	Rosuvastatin Calcium	46	12
Ciprofloxacin Hcl	Ciprofloxacin Hcl	45	35
Nabumetone	Nabumetone	44	14
Xarelto	Rivaroxaban	44	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	42	18
Pravastatin Sodium	Pravastatin Sodium	42	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	41	13
Paroxetine Hcl	Paroxetine Hcl	40	suppressed
Bupropion Xl	Bupropion Hcl	39	suppressed
Clonazepam	Clonazepam	38	suppressed
Donepezil Hcl	Donepezil Hcl	38	suppressed
Alendronate Sodium	Alendronate Sodium	37	11
Zolpidem Tartrate	Zolpidem Tartrate	37	11
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	36	suppressed
Ventolin Hfa	Albuterol Sulfate	36	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	35	suppressed
Ropinirole Hcl	Ropinirole Hcl	35	suppressed
Cephalexin	Cephalexin	34	32
Sucralfate	Sucralfate	34	suppressed
Warfarin Sodium	Warfarin Sodium	34	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	33	26
Glipizide	Glipizide	33	suppressed
Carvedilol	Carvedilol	31	11
Glimepiride	Glimepiride	31	suppressed
Ibuprofen	Ibuprofen	31	suppressed
Sertraline Hcl	Sertraline Hcl	31	suppressed
Breo Ellipta	Fluticasone/Vilanterol	30	suppressed
Naproxen	Naproxen	30	suppressed
Ozempic	Semaglutide	30	suppressed
Tizanidine Hcl	Tizanidine Hcl	30	suppressed
Myrbetriq	Mirabegron	27	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	27	suppressed
Prednisone	Prednisone	27	16
Diclofenac Sodium	Diclofenac Sodium	26	suppressed
Meloxicam	Meloxicam	25	suppressed
Memantine Hcl	Memantine Hcl	25	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	24	suppressed
Synthroid	Levothyroxine Sodium	24	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	23	suppressed
Oxycodone Hcl	Oxycodone Hcl	23	suppressed
Testosterone Cypionate	Testosterone Cypionate	23	suppressed
Farxiga	Dapagliflozin Propanediol	22	suppressed
Lorazepam	Lorazepam	22	suppressed
Benazepril Hcl	Benazepril Hcl	21	suppressed
Duloxetine Hcl	Duloxetine Hcl	21	suppressed
Ezetimibe	Ezetimibe	21	suppressed
Novolog Flexpen	Insulin Aspart	21	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	21	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	20	suppressed
Citalopram Hbr	Citalopram Hydrobromide	19	suppressed
Lovastatin	Lovastatin	19	suppressed
Meclizine Hcl	Meclizine Hcl	19	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	19	suppressed
Jardiance	Empagliflozin	18	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	18	suppressed
Aripiprazole	Aripiprazole	17	suppressed
Levofloxacin	Levofloxacin	17	14
Ondansetron Odt	Ondansetron	17	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	16	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	15	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	15	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	15	suppressed
Topiramate	Topiramate	15	suppressed
Buspirone Hcl	Buspirone Hcl	14	suppressed
Celecoxib	Celecoxib	14	suppressed
Entresto	Sacubitril/Valsartan	14	suppressed
Famotidine	Famotidine	14	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	14	suppressed
Nitroglycerin	Nitroglycerin	14	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	14	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	13	suppressed
Cefdinir	Cefdinir	13	suppressed
Clorazepate Dipotassium	Clorazepate Dipotassium	13	suppressed
Diazepam	Diazepam	13	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	13	suppressed
Tresiba Flextouch U-100	Insulin Degludec	13	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	13	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	12	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	12	suppressed
Gemtesa	Vibegron	12	suppressed
Ibu	Ibuprofen	12	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	12	suppressed
Propranolol Hcl	Propranolol Hcl	12	suppressed
Repatha Sureclick	Evolocumab	12	suppressed
Cilostazol	Cilostazol	11	suppressed
Dilantin	Phenytoin Sodium Extended	11	suppressed
Fesoterodine Fumarate Er	Fesoterodine Fumarate	11	suppressed
Fluconazole	Fluconazole	11	11
Hydralazine Hcl	Hydralazine Hcl	11	suppressed
Mounjaro	Tirzepatide	11	suppressed
Spiriva Handihaler	Tiotropium Bromide	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