Healthcare provider profile · identity verified

Donell M Timpe, MD

Family Practice · MASON CITY, IA · NPI 1861429151

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	807	206
Levothyroxine Sodium	Levothyroxine Sodium	479	105
Lisinopril	Lisinopril	395	101
Rosuvastatin Calcium	Rosuvastatin Calcium	337	100
Sertraline Hcl	Sertraline Hcl	261	58
Amlodipine Besylate	Amlodipine Besylate	249	69
Alendronate Sodium	Alendronate Sodium	223	58
Pantoprazole Sodium	Pantoprazole Sodium	209	46
Irbesartan	Irbesartan	188	50
Omeprazole	Omeprazole	174	44
Metoprolol Succinate	Metoprolol Succinate	168	46
Gabapentin	Gabapentin	153	34
Losartan Potassium	Losartan Potassium	145	45
Metformin Hcl	Metformin Hcl	137	35
Famotidine	Famotidine	130	41
Fluoxetine Hcl	Fluoxetine Hcl	125	30
Simvastatin	Simvastatin	110	27
Metoprolol Tartrate	Metoprolol Tartrate	100	25
Warfarin Sodium	Warfarin Sodium	98	17
Bupropion Xl	Bupropion Hcl	96	22
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	88	26
Hydrochlorothiazide	Hydrochlorothiazide	87	27
Metformin Hcl Er	Metformin Hcl	85	25
Trazodone Hcl	Trazodone Hcl	83	18
Torsemide	Torsemide	82	13
Tramadol Hcl	Tramadol Hcl	81	17
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	80	19
Spironolactone	Spironolactone	73	24
Furosemide	Furosemide	72	22
Citalopram Hbr	Citalopram Hydrobromide	68	16
Donepezil Hcl	Donepezil Hcl	68	suppressed
Carvedilol	Carvedilol	65	20
Albuterol Sulfate Hfa	Albuterol Sulfate	63	25
Clopidogrel	Clopidogrel Bisulfate	62	suppressed
Duloxetine Hcl	Duloxetine Hcl	61	13
Benazepril Hcl	Benazepril Hcl	58	15
Trulicity	Dulaglutide	58	suppressed
Montelukast Sodium	Montelukast Sodium	57	18
Jardiance	Empagliflozin	51	11
Venlafaxine Hcl Er	Venlafaxine Hcl	51	suppressed
Eliquis	Apixaban	50	12
Ropinirole Hcl	Ropinirole Hcl	48	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	46	12
Buspirone Hcl	Buspirone Hcl	44	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	44	12
Chlorthalidone	Chlorthalidone	43	11
Topiramate	Topiramate	42	11
Allopurinol	Allopurinol	41	suppressed
Irbesartan-Hydrochlorothiazide	Irbesartan/Hydrochlorothiazide	41	13
Bupropion Hcl Sr	Bupropion Hcl	37	suppressed
Xarelto	Rivaroxaban	37	suppressed
Memantine Hcl	Memantine Hcl	33	suppressed
Ozempic	Semaglutide	33	suppressed
Celecoxib	Celecoxib	31	suppressed
Fluticasone Propionate	Fluticasone Propionate	31	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	31	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	31	24
Escitalopram Oxalate	Escitalopram Oxalate	30	11
Prednisone	Prednisone	29	24
Rybelsus	Semaglutide	29	suppressed
Azithromycin	Azithromycin	27	26
Diltiazem 24hr Er	Diltiazem Hcl	27	suppressed
Mirtazapine	Mirtazapine	26	suppressed
Alprazolam	Alprazolam	25	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	25	suppressed
Valacyclovir	Valacyclovir Hcl	25	14
Fentanyl	Fentanyl	24	suppressed
Arnuity Ellipta	Fluticasone Furoate	23	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	23	suppressed
Estradiol	Estradiol	22	suppressed
Benazepril-Hydrochlorothiazide	Benazepril/Hydrochlorothiazide	21	suppressed
Ipratropium Bromide	Ipratropium Bromide	21	suppressed
Paroxetine Hcl	Paroxetine Hcl	21	suppressed
Sod Sulf-Potass Sulf-Mag Sulf	Sodium, Potassium,mag Sulfates	21	20
Hydralazine Hcl	Hydralazine Hcl	20	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	20	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	20	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	20	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	19	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	19	19
Potassium Chloride	Potassium Chloride	19	suppressed
Tresiba Flextouch U-100	Insulin Degludec	19	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	19	11
Meloxicam	Meloxicam	18	suppressed
Pravastatin Sodium	Pravastatin Sodium	18	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	18	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	17	15
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	16	suppressed
Lovastatin	Lovastatin	16	suppressed
Amoxicillin	Amoxicillin	15	14
Dulera	Mometasone/Formoterol	15	suppressed
Ezetimibe	Ezetimibe	15	suppressed
Glimepiride	Glimepiride	15	suppressed
Latanoprost	Latanoprost	15	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	15	suppressed
Synthroid	Levothyroxine Sodium	15	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	14	suppressed
Lidocaine	Lidocaine	14	suppressed
Myrbetriq	Mirabegron	14	suppressed
Novolog Mix 70-30 Flexpen	Insulin Aspart Prot/Insuln Asp	14	suppressed
Amiodarone Hcl	Amiodarone Hcl	13	suppressed
Baclofen	Baclofen	13	suppressed
Cefdinir	Cefdinir	13	12
Colestipol Hcl	Colestipol Hcl	13	suppressed
Pregabalin	Pregabalin	13	suppressed
Tamsulosin Hcl	Tamsulosin Hcl	13	suppressed
Tresiba Flextouch U-200	Insulin Degludec	13	suppressed
Tri-Linyah	Norgestimate-Ethinyl Estradiol	13	suppressed
Cimetidine	Cimetidine	12	suppressed
Lamotrigine	Lamotrigine	12	suppressed
Valsartan	Valsartan	12	suppressed
Chlordiazepoxide Hcl	Chlordiazepoxide Hcl	11	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	11	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	11	suppressed
Nitroglycerin	Nitroglycerin	11	suppressed
Novolog Flexpen	Insulin Aspart	11	suppressed
Nystatin	Nystatin	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