Healthcare provider profile · identity verified

David Michael Byrens, M.D.

Family Practice · MARSHALL, MI · NPI 1902874126

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
Amlodipine Besylate	Amlodipine Besylate	391	101
Rosuvastatin Calcium	Rosuvastatin Calcium	376	92
Levothyroxine Sodium	Levothyroxine Sodium	349	81
Atorvastatin Calcium	Atorvastatin Calcium	322	90
Losartan Potassium	Losartan Potassium	301	81
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	295	62
Lisinopril	Lisinopril	277	75
Pantoprazole Sodium	Pantoprazole Sodium	275	63
Metoprolol Succinate	Metoprolol Succinate	267	69
Tramadol Hcl	Tramadol Hcl	258	59
Alprazolam	Alprazolam	257	59
Furosemide	Furosemide	253	62
Omeprazole	Omeprazole	241	65
Metformin Hcl	Metformin Hcl	236	54
Simvastatin	Simvastatin	228	62
Tamsulosin Hcl	Tamsulosin Hcl	223	52
Prednisone	Prednisone	215	122
Gabapentin	Gabapentin	185	39
Bupropion Xl	Bupropion Hcl	161	36
Pioglitazone Hcl	Pioglitazone Hcl	149	31
Escitalopram Oxalate	Escitalopram Oxalate	141	32
Pregabalin	Pregabalin	141	34
Trazodone Hcl	Trazodone Hcl	139	35
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	138	25
Eliquis	Apixaban	129	25
Metformin Hcl Er	Metformin Hcl	125	34
Quetiapine Fumarate	Quetiapine Fumarate	118	23
Sertraline Hcl	Sertraline Hcl	117	35
Famotidine	Famotidine	113	27
Metoprolol Tartrate	Metoprolol Tartrate	108	27
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	104	27
Duloxetine Hcl	Duloxetine Hcl	100	26
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	97	26
Ropinirole Hcl	Ropinirole Hcl	89	14
Lorazepam	Lorazepam	88	18
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	85	21
Citalopram Hbr	Citalopram Hydrobromide	84	21
Fluticasone Propionate	Fluticasone Propionate	84	26
Clopidogrel	Clopidogrel Bisulfate	83	21
Hydrochlorothiazide	Hydrochlorothiazide	81	24
Montelukast Sodium	Montelukast Sodium	81	22
Topiramate	Topiramate	76	14
Clonazepam	Clonazepam	75	15
Carvedilol	Carvedilol	72	15
Fluoxetine Hcl	Fluoxetine Hcl	72	20
Invokana	Canagliflozin	72	suppressed
Potassium Chloride	Potassium Chloride	72	15
Zolpidem Tartrate	Zolpidem Tartrate	72	15
Celecoxib	Celecoxib	70	19
Xarelto	Rivaroxaban	70	12
Clonidine Hcl	Clonidine Hcl	69	14
Dutasteride	Dutasteride	63	13
Mounjaro	Tirzepatide	63	suppressed
Solifenacin Succinate	Solifenacin Succinate	63	14
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	62	17
Donepezil Hcl	Donepezil Hcl	60	11
Pravastatin Sodium	Pravastatin Sodium	56	11
Albuterol Sulfate Hfa	Albuterol Sulfate	54	24
Spironolactone	Spironolactone	52	14
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	51	13
Morphine Sulfate Er	Morphine Sulfate	51	suppressed
Sucralfate	Sucralfate	51	suppressed
Atenolol	Atenolol	50	12
Buspirone Hcl	Buspirone Hcl	50	12
Valsartan	Valsartan	50	17
Mirtazapine	Mirtazapine	49	suppressed
Allopurinol	Allopurinol	48	13
Aripiprazole	Aripiprazole	48	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	47	14
Diclofenac Sodium	Diclofenac Sodium	46	12
Ozempic	Semaglutide	46	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	45	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	45	29
Hydralazine Hcl	Hydralazine Hcl	44	12
Meloxicam	Meloxicam	43	13
Cephalexin	Cephalexin	41	32
Memantine Hcl	Memantine Hcl	41	suppressed
Synthroid	Levothyroxine Sodium	40	suppressed
Estradiol	Estradiol	39	13
Glimepiride	Glimepiride	39	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	39	suppressed
Ondansetron Hcl	Ondansetron Hcl	39	13
Oxybutynin Chloride Er	Oxybutynin Chloride	39	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	39	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	37	suppressed
Acyclovir	Acyclovir	36	12
Nortriptyline Hcl	Nortriptyline Hcl	36	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	35	suppressed
Finasteride	Finasteride	35	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	35	suppressed
Naproxen	Naproxen	34	13
Colchicine	Colchicine	33	13
Januvia	Sitagliptin Phosphate	32	suppressed
Trulicity	Dulaglutide	32	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	31	suppressed
Hydrocortisone	Hydrocortisone	31	15
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	31	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	30	16
Linzess	Linaclotide	30	suppressed
Warfarin Sodium	Warfarin Sodium	30	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	29	suppressed
Ibuprofen	Ibuprofen	29	11
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	29	suppressed
Spironolactone-Hctz	Spironolact/Hydrochlorothiazid	28	12
Temazepam	Temazepam	28	suppressed
Bupropion Hcl Sr	Bupropion Hcl	26	suppressed
Ezetimibe	Ezetimibe	26	suppressed
Lansoprazole	Lansoprazole	26	suppressed
Oxycodone Hcl	Oxycodone Hcl	26	suppressed
Clobetasol Propionate	Clobetasol Propionate	25	23
Farxiga	Dapagliflozin Propanediol	25	suppressed
Meclizine Hcl	Meclizine Hcl	25	11
Promethazine Hcl	Promethazine Hcl	25	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	25	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	24	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	24	19
Amoxicillin	Amoxicillin	22	17
Fluorouracil	Fluorouracil	22	21
Myrbetriq	Mirabegron	22	suppressed
Ventolin Hfa	Albuterol Sulfate	22	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	21	suppressed
Fenofibrate	Fenofibrate	21	suppressed
Lovastatin	Lovastatin	21	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	21	suppressed
Alprazolam Xr	Alprazolam	20	suppressed
Jardiance	Empagliflozin	19	suppressed
Mometasone Furoate	Mometasone Furoate	19	15
Nystatin	Nystatin	18	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	17	14
Digoxin	Digoxin	17	suppressed
Enalapril Maleate	Enalapril Maleate	17	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	17	suppressed
Ranolazine Er	Ranolazine	17	suppressed
Symbicort	Budesonide/Formoterol Fumarate	17	suppressed
Alendronate Sodium	Alendronate Sodium	16	suppressed
Dexlansoprazole Dr	Dexlansoprazole	16	suppressed
Diazepam	Diazepam	16	suppressed
Doxepin Hcl	Doxepin Hcl	16	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	16	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	16	suppressed
Propranolol Hcl Er	Propranolol Hcl	16	suppressed
Trimethoprim	Trimethoprim	16	suppressed
Ulticare Pen Needle	Pen Needle, Diabetic	16	suppressed
Amiodarone Hcl	Amiodarone Hcl	15	suppressed
Diltiazem Hcl	Diltiazem Hcl	15	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	15	11
Midodrine Hcl	Midodrine Hcl	15	suppressed
Prochlorperazine Maleate	Prochlorperazine Maleate	15	suppressed
Bumetanide	Bumetanide	14	suppressed
Cefdinir	Cefdinir	14	14
Gemfibrozil	Gemfibrozil	14	suppressed
Levofloxacin	Levofloxacin	14	11
Loperamide	Loperamide Hcl	14	suppressed
Nifedipine Er	Nifedipine	14	suppressed
Tadalafil	Tadalafil	14	suppressed
Tolterodine Tartrate	Tolterodine Tartrate	14	suppressed
Azithromycin	Azithromycin	13	13
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	13	suppressed
Glipizide Er	Glipizide	13	suppressed
Hydroxyzine Pamoate	Hydroxyzine Pamoate	13	suppressed
Lubiprostone	Lubiprostone	13	suppressed
Oxycontin	Oxycodone Hcl	13	suppressed
Propranolol Hcl	Propranolol Hcl	13	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	13	suppressed
Amlodipine-Valsartan	Amlodipine Besylate/Valsartan	12	suppressed
Diclofenac Potassium	Diclofenac Potassium	12	suppressed
Methocarbamol	Methocarbamol	12	suppressed
Ondansetron Odt	Ondansetron	12	suppressed
Raloxifene Hcl	Raloxifene Hcl	12	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	11	suppressed
Butorphanol Tartrate	Butorphanol Tartrate	11	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	11	suppressed
Desloratadine	Desloratadine	11	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	11	suppressed
Febuxostat	Febuxostat	11	suppressed
Qvar Redihaler	Beclomethasone Dipropionate	11	suppressed
Venlafaxine Hcl	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