Healthcare provider profile · identity verified

Marshall Henderson, MD

Family Practice · BISMARCK, ND · NPI 1225655616

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	230	84
Levothyroxine Sodium	Levothyroxine Sodium	226	61
Lisinopril	Lisinopril	219	66
Amlodipine Besylate	Amlodipine Besylate	151	47
Omeprazole	Omeprazole	138	38
Losartan Potassium	Losartan Potassium	117	41
Gabapentin	Gabapentin	116	34
Pantoprazole Sodium	Pantoprazole Sodium	104	40
Trazodone Hcl	Trazodone Hcl	102	24
Metoprolol Succinate	Metoprolol Succinate	95	27
Metformin Hcl	Metformin Hcl	93	28
Furosemide	Furosemide	90	31
Hydrochlorothiazide	Hydrochlorothiazide	89	30
Tamsulosin Hcl	Tamsulosin Hcl	85	29
Metformin Hcl Er	Metformin Hcl	75	26
Pravastatin Sodium	Pravastatin Sodium	72	15
Rosuvastatin Calcium	Rosuvastatin Calcium	71	18
Allopurinol	Allopurinol	70	23
Ozempic	Semaglutide	70	16
Jardiance	Empagliflozin	60	15
Escitalopram Oxalate	Escitalopram Oxalate	57	17
Eliquis	Apixaban	55	12
Montelukast Sodium	Montelukast Sodium	50	15
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	49	14
Metoprolol Tartrate	Metoprolol Tartrate	47	11
Potassium Chloride	Potassium Chloride	45	17
Simvastatin	Simvastatin	45	15
Albuterol Sulfate Hfa	Albuterol Sulfate	43	18
Tramadol Hcl	Tramadol Hcl	38	12
Meloxicam	Meloxicam	36	19
Fentanyl	Fentanyl	35	suppressed
Warfarin Sodium	Warfarin Sodium	35	suppressed
Duloxetine Hcl	Duloxetine Hcl	34	12
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	34	suppressed
Sertraline Hcl	Sertraline Hcl	34	14
Chlorthalidone	Chlorthalidone	31	11
Baclofen	Baclofen	30	22
Trulicity	Dulaglutide	27	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	25	suppressed
Ropinirole Hcl	Ropinirole Hcl	25	suppressed
Estradiol	Estradiol	24	suppressed
Famotidine	Famotidine	24	suppressed
Finasteride	Finasteride	24	suppressed
Propranolol Hcl	Propranolol Hcl	24	11
Carvedilol	Carvedilol	23	suppressed
Torsemide	Torsemide	21	suppressed
Clopidogrel	Clopidogrel Bisulfate	20	suppressed
Irbesartan	Irbesartan	20	suppressed
Alendronate Sodium	Alendronate Sodium	19	suppressed
Carisoprodol	Carisoprodol	19	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	19	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	19	suppressed
Prednisone	Prednisone	19	11
Fluticasone Propionate	Fluticasone Propionate	18	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	18	11
Meclizine Hcl	Meclizine Hcl	18	suppressed
Olanzapine	Olanzapine	18	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	18	suppressed
Azithromycin	Azithromycin	17	suppressed
Dexlansoprazole Dr	Dexlansoprazole	17	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	17	suppressed
Levetiracetam	Levetiracetam	17	suppressed
Spironolactone	Spironolactone	17	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	16	suppressed
Alprazolam	Alprazolam	15	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	15	suppressed
Indapamide	Indapamide	15	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	15	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	15	suppressed
Terbinafine Hcl	Terbinafine Hcl	15	suppressed
Glimepiride	Glimepiride	13	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	13	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	12	suppressed
Glipizide	Glipizide	12	suppressed
Novolog Flexpen	Insulin Aspart	12	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	12	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	12	suppressed
Synthroid	Levothyroxine Sodium	12	suppressed
Ventolin Hfa	Albuterol Sulfate	12	suppressed
Citalopram Hbr	Citalopram Hydrobromide	11	suppressed
Desvenlafaxine Succinate Er	Desvenlafaxine Succinate	11	suppressed
Humalog Kwikpen U-100	Insulin Lispro	11	suppressed
Oxcarbazepine	Oxcarbazepine	11	suppressed
Spiriva Respimat	Tiotropium Bromide	11	suppressed
Tresiba Flextouch U-100	Insulin Degludec	11	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	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