Healthcare provider profile · identity verified

David C Nielsen, MD

Internal Medicine · BOISE, ID · NPI 1821048364

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	710	204
Amlodipine Besylate	Amlodipine Besylate	612	172
Levothyroxine Sodium	Levothyroxine Sodium	531	131
Lisinopril	Lisinopril	382	114
Omeprazole	Omeprazole	353	100
Losartan Potassium	Losartan Potassium	325	94
Metoprolol Succinate	Metoprolol Succinate	270	79
Gabapentin	Gabapentin	186	55
Simvastatin	Simvastatin	175	53
Rosuvastatin Calcium	Rosuvastatin Calcium	168	54
Metformin Hcl	Metformin Hcl	167	54
Eliquis	Apixaban	158	39
Metformin Hcl Er	Metformin Hcl	128	39
Tramadol Hcl	Tramadol Hcl	128	39
Ozempic	Semaglutide	123	29
Tamsulosin Hcl	Tamsulosin Hcl	111	31
Alendronate Sodium	Alendronate Sodium	107	36
Zolpidem Tartrate	Zolpidem Tartrate	106	26
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	104	28
Sertraline Hcl	Sertraline Hcl	98	33
Trazodone Hcl	Trazodone Hcl	97	25
Hydrochlorothiazide	Hydrochlorothiazide	95	31
Albuterol Sulfate Hfa	Albuterol Sulfate	91	35
Furosemide	Furosemide	88	29
Duloxetine Hcl	Duloxetine Hcl	81	22
Lovastatin	Lovastatin	80	23
Telmisartan	Telmisartan	73	29
Mounjaro	Tirzepatide	68	11
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	67	20
Allopurinol	Allopurinol	65	26
Bupropion Xl	Bupropion Hcl	63	18
Potassium Chloride	Potassium Chloride	63	26
Pravastatin Sodium	Pravastatin Sodium	63	17
Carvedilol	Carvedilol	61	19
Warfarin Sodium	Warfarin Sodium	61	19
Metoprolol Tartrate	Metoprolol Tartrate	58	18
Pantoprazole Sodium	Pantoprazole Sodium	58	17
Citalopram Hbr	Citalopram Hydrobromide	54	16
Candesartan Cilexetil	Candesartan Cilexetil	46	14
Terazosin Hcl	Terazosin Hcl	45	16
Trulicity	Dulaglutide	45	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	45	11
Famotidine	Famotidine	44	14
Glimepiride	Glimepiride	44	12
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	43	19
Fluticasone Propionate	Fluticasone Propionate	42	17
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	42	13
Memantine Hcl	Memantine Hcl	41	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	39	11
Methylprednisolone	Methylprednisolone	38	34
Symbicort	Budesonide/Formoterol Fumarate	38	suppressed
Glipizide Er	Glipizide	37	11
Synthroid	Levothyroxine Sodium	37	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	36	17
Finasteride	Finasteride	36	12
Triamcinolone Acetonide	Triamcinolone Acetonide	36	26
Mirtazapine	Mirtazapine	35	11
Diclofenac Sodium	Diclofenac Sodium	34	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	34	14
Glipizide	Glipizide	34	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	34	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	33	suppressed
Ipratropium Bromide	Ipratropium Bromide	33	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	32	11
Olmesartan Medoxomil	Olmesartan Medoxomil	32	suppressed
Celecoxib	Celecoxib	31	suppressed
Hydralazine Hcl	Hydralazine Hcl	31	suppressed
Irbesartan	Irbesartan	30	suppressed
Jardiance	Empagliflozin	29	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	29	25
Ropinirole Hcl	Ropinirole Hcl	29	suppressed
Prednisone	Prednisone	28	16
Shingrix	Varicella-Zoster Ge/As01b/Pf	28	18
Spironolactone	Spironolactone	27	11
Clopidogrel	Clopidogrel Bisulfate	25	suppressed
Donepezil Hcl	Donepezil Hcl	25	suppressed
Pregabalin	Pregabalin	25	suppressed
Valacyclovir	Valacyclovir Hcl	25	14
Xarelto	Rivaroxaban	25	suppressed
Alprazolam	Alprazolam	24	suppressed
Testosterone Cypionate	Testosterone Cypionate	23	suppressed
Ventolin Hfa	Albuterol Sulfate	23	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	22	suppressed
Lorazepam	Lorazepam	22	suppressed
Montelukast Sodium	Montelukast Sodium	22	suppressed
Tizanidine Hcl	Tizanidine Hcl	22	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	21	suppressed
Meloxicam	Meloxicam	21	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	21	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	20	suppressed
Ezetimibe	Ezetimibe	20	suppressed
Januvia	Sitagliptin Phosphate	19	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	18	suppressed
Atenolol	Atenolol	18	suppressed
Benazepril Hcl	Benazepril Hcl	18	suppressed
Estradiol	Estradiol	18	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	17	suppressed
Bisoprolol-Hydrochlorothiazide	Bisoprolol/Hydrochlorothiazide	16	suppressed
Boostrix Tdap	Diphth,pertuss(Acell),tet Vac	16	16
Gemfibrozil	Gemfibrozil	16	suppressed
Haloperidol	Haloperidol	16	suppressed
Acyclovir	Acyclovir	15	suppressed
Humalog Kwikpen U-100	Insulin Lispro	15	suppressed
Myrbetriq	Mirabegron	15	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	15	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	15	suppressed
Farxiga	Dapagliflozin Propanediol	14	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	14	suppressed
Clonidine Hcl	Clonidine Hcl	13	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	13	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	13	suppressed
Nifedipine Er	Nifedipine	13	suppressed
Testosterone	Testosterone	13	suppressed
Valsartan	Valsartan	13	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	12	suppressed
Insulin Aspart Flexpen	Insulin Aspart	12	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	12	suppressed
Lithium Carbonate	Lithium Carbonate	12	suppressed
Propranolol Hcl Er	Propranolol Hcl	12	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	11	suppressed
Eszopiclone	Eszopiclone	11	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	11	suppressed
Lyumjev Kwikpen U-100	Insulin Lispro-Aabc	11	suppressed
Meclizine Hcl	Meclizine Hcl	11	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	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