Healthcare provider profile · identity verified

Mark D Elderbrock, M.D.

Family Practice · WOOSTER, OH · NPI 1538254495

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	324	100
Lisinopril	Lisinopril	304	104
Amlodipine Besylate	Amlodipine Besylate	293	84
Levothyroxine Sodium	Levothyroxine Sodium	285	79
Omeprazole	Omeprazole	214	58
Metoprolol Succinate	Metoprolol Succinate	202	55
Gabapentin	Gabapentin	193	50
Albuterol Sulfate Hfa	Albuterol Sulfate	186	50
Metoprolol Tartrate	Metoprolol Tartrate	178	47
Losartan Potassium	Losartan Potassium	163	53
Hydrochlorothiazide	Hydrochlorothiazide	162	45
Tamsulosin Hcl	Tamsulosin Hcl	157	41
Pantoprazole Sodium	Pantoprazole Sodium	153	44
Furosemide	Furosemide	152	47
Metformin Hcl	Metformin Hcl	120	36
Simvastatin	Simvastatin	117	36
Lorazepam	Lorazepam	116	30
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	107	23
Trazodone Hcl	Trazodone Hcl	107	24
Eliquis	Apixaban	105	22
Meloxicam	Meloxicam	104	42
Metformin Hcl Er	Metformin Hcl	102	30
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	87	24
Warfarin Sodium	Warfarin Sodium	85	22
Duloxetine Hcl	Duloxetine Hcl	83	18
Sertraline Hcl	Sertraline Hcl	83	21
Alprazolam	Alprazolam	77	16
Fluticasone Propionate	Fluticasone Propionate	74	29
Rosuvastatin Calcium	Rosuvastatin Calcium	73	24
Glimepiride	Glimepiride	67	27
Pravastatin Sodium	Pravastatin Sodium	66	20
Synthroid	Levothyroxine Sodium	66	18
Potassium Chloride	Potassium Chloride	64	20
Bupropion Xl	Bupropion Hcl	63	17
Jardiance	Empagliflozin	63	13
Atenolol	Atenolol	60	23
Clopidogrel	Clopidogrel Bisulfate	59	17
Celecoxib	Celecoxib	57	17
Fluoxetine Hcl	Fluoxetine Hcl	57	21
Prednisone	Prednisone	57	33
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	56	11
Allopurinol	Allopurinol	51	14
Tramadol Hcl	Tramadol Hcl	50	13
Ibuprofen	Ibuprofen	49	suppressed
Citalopram Hbr	Citalopram Hydrobromide	48	12
Montelukast Sodium	Montelukast Sodium	48	15
Venlafaxine Hcl Er	Venlafaxine Hcl	48	13
Ozempic	Semaglutide	47	suppressed
Finasteride	Finasteride	43	suppressed
Tizanidine Hcl	Tizanidine Hcl	42	15
Baclofen	Baclofen	40	suppressed
Propranolol Hcl	Propranolol Hcl	40	suppressed
Carvedilol	Carvedilol	37	14
Glipizide Er	Glipizide	37	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	37	11
Alendronate Sodium	Alendronate Sodium	36	suppressed
Trulicity	Dulaglutide	36	12
Zolpidem Tartrate	Zolpidem Tartrate	36	11
Amitriptyline Hcl	Amitriptyline Hcl	35	suppressed
Breo Ellipta	Fluticasone/Vilanterol	35	suppressed
Buspirone Hcl	Buspirone Hcl	35	suppressed
Acyclovir	Acyclovir	33	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	33	11
Oxybutynin Chloride	Oxybutynin Chloride	32	suppressed
Nystatin	Nystatin	30	suppressed
Ondansetron Odt	Ondansetron	30	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	29	suppressed
Famotidine	Famotidine	29	suppressed
Ropinirole Hcl	Ropinirole Hcl	29	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	28	suppressed
Diclofenac Sodium	Diclofenac Sodium	28	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	28	suppressed
Naproxen	Naproxen	26	suppressed
Levetiracetam	Levetiracetam	25	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	25	suppressed
Paroxetine Hcl	Paroxetine Hcl	25	12
Glipizide	Glipizide	24	suppressed
Mirtazapine	Mirtazapine	24	suppressed
Mounjaro	Tirzepatide	24	suppressed
Azithromycin	Azithromycin	23	15
Ezetimibe	Ezetimibe	23	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	23	suppressed
Donepezil Hcl	Donepezil Hcl	22	suppressed
Hydroxyzine Pamoate	Hydroxyzine Pamoate	22	suppressed
Nabumetone	Nabumetone	22	suppressed
Topiramate	Topiramate	22	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	21	suppressed
Hydralazine Hcl	Hydralazine Hcl	21	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	21	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	20	suppressed
Lansoprazole	Lansoprazole	20	suppressed
Temazepam	Temazepam	20	suppressed
Digoxin	Digoxin	19	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	19	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	18	15
Dutasteride	Dutasteride	18	suppressed
Xarelto	Rivaroxaban	18	suppressed
Cephalexin	Cephalexin	17	12
Nortriptyline Hcl	Nortriptyline Hcl	17	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	17	suppressed
Chlorthalidone	Chlorthalidone	16	suppressed
Clonazepam	Clonazepam	16	suppressed
Fenofibrate	Fenofibrate	16	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	16	suppressed
Valacyclovir	Valacyclovir Hcl	16	suppressed
Metolazone	Metolazone	15	suppressed
Telmisartan	Telmisartan	15	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	14	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	13	suppressed
Amoxicillin	Amoxicillin	13	suppressed
Carbamazepine	Carbamazepine	13	suppressed
Clonidine Hcl	Clonidine Hcl	13	suppressed
Colesevelam Hcl	Colesevelam Hcl	13	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	13	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	13	12
Insulin Lispro Kwikpen U-100	Insulin Lispro	13	suppressed
Janumet Xr	Sitagliptin Phos/Metformin Hcl	13	suppressed
Risperidone	Risperidone	13	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	13	12
Ciprofloxacin Hcl	Ciprofloxacin Hcl	12	suppressed
Colchicine	Colchicine	12	suppressed
Enalapril Maleate	Enalapril Maleate	12	suppressed
Levofloxacin	Levofloxacin	12	suppressed
Oxycodone Hcl	Oxycodone Hcl	12	suppressed
Phenytoin	Phenytoin	12	suppressed
Ramipril	Ramipril	12	suppressed
Spironolactone	Spironolactone	12	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	12	suppressed
Ursodiol	Ursodiol	12	suppressed
Divalproex Sodium	Divalproex Sodium	11	suppressed
Loperamide	Loperamide Hcl	11	suppressed
Nitroglycerin	Nitroglycerin	11	suppressed
Verapamil Er	Verapamil 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