Healthcare provider profile · identity verified

D Matthew Koehler, MD

Internal Medicine · DELAWARE, OH · NPI 1316031594

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
Rosuvastatin Calcium	Rosuvastatin Calcium	581	134
Levothyroxine Sodium	Levothyroxine Sodium	461	95
Atorvastatin Calcium	Atorvastatin Calcium	415	108
Amlodipine Besylate	Amlodipine Besylate	275	78
Losartan Potassium	Losartan Potassium	262	69
Pantoprazole Sodium	Pantoprazole Sodium	211	58
Metformin Hcl Er	Metformin Hcl	207	54
Omeprazole	Omeprazole	190	56
Metoprolol Succinate	Metoprolol Succinate	150	43
Ozempic	Semaglutide	141	21
Gabapentin	Gabapentin	133	36
Lisinopril	Lisinopril	128	34
Valsartan	Valsartan	117	33
Furosemide	Furosemide	113	33
Carvedilol	Carvedilol	112	27
Eliquis	Apixaban	107	28
Fluticasone Propionate	Fluticasone Propionate	95	38
Montelukast Sodium	Montelukast Sodium	94	23
Duloxetine Hcl	Duloxetine Hcl	92	26
Trazodone Hcl	Trazodone Hcl	87	20
Sertraline Hcl	Sertraline Hcl	83	24
Famotidine	Famotidine	80	21
Albuterol Sulfate Hfa	Albuterol Sulfate	68	28
Pravastatin Sodium	Pravastatin Sodium	68	20
Glimepiride	Glimepiride	64	16
Metformin Hcl	Metformin Hcl	63	19
Trulicity	Dulaglutide	63	13
Alendronate Sodium	Alendronate Sodium	62	15
Tamsulosin Hcl	Tamsulosin Hcl	61	20
Buspirone Hcl	Buspirone Hcl	59	16
Jardiance	Empagliflozin	58	18
Spironolactone	Spironolactone	58	16
Ezetimibe	Ezetimibe	57	16
Prednisone	Prednisone	57	39
Bupropion Xl	Bupropion Hcl	55	15
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	54	15
Pioglitazone Hcl	Pioglitazone Hcl	52	suppressed
Doxepin Hcl	Doxepin Hcl	51	11
Hydrochlorothiazide	Hydrochlorothiazide	51	17
Potassium Chloride	Potassium Chloride	49	18
Atenolol	Atenolol	45	13
Fluoxetine Hcl	Fluoxetine Hcl	45	11
Amlodipine-Valsartan	Amlodipine Besylate/Valsartan	44	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	44	12
Quetiapine Fumarate	Quetiapine Fumarate	40	suppressed
Farxiga	Dapagliflozin Propanediol	38	suppressed
Ondansetron Odt	Ondansetron	38	suppressed
Tizanidine Hcl	Tizanidine Hcl	37	12
Venlafaxine Hcl Er	Venlafaxine Hcl	37	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	36	13
Meloxicam	Meloxicam	33	12
Allopurinol	Allopurinol	32	suppressed
Nystatin	Nystatin	32	15
Sumatriptan Succinate	Sumatriptan Succinate	32	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	31	suppressed
Cephalexin	Cephalexin	30	20
Clopidogrel	Clopidogrel Bisulfate	30	suppressed
Hydralazine Hcl	Hydralazine Hcl	29	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	29	20
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	28	24
Escitalopram Oxalate	Escitalopram Oxalate	28	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	28	suppressed
Finasteride	Finasteride	27	suppressed
Irbesartan	Irbesartan	27	suppressed
Metoprolol Tartrate	Metoprolol Tartrate	27	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	26	11
Simvastatin	Simvastatin	25	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	25	suppressed
Azithromycin	Azithromycin	24	20
Valacyclovir	Valacyclovir Hcl	24	suppressed
Propranolol Hcl Er	Propranolol Hcl	23	suppressed
Etodolac	Etodolac	22	16
Myrbetriq	Mirabegron	22	suppressed
Celecoxib	Celecoxib	21	suppressed
Donepezil Hcl	Donepezil Hcl	21	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	21	suppressed
Ropinirole Hcl	Ropinirole Hcl	21	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	19	suppressed
Aripiprazole	Aripiprazole	19	suppressed
Synthroid	Levothyroxine Sodium	19	suppressed
Tramadol Hcl	Tramadol Hcl	19	suppressed
Tresiba Flextouch U-100	Insulin Degludec	19	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	18	suppressed
Ventolin Hfa	Albuterol Sulfate	18	suppressed
Fluconazole	Fluconazole	17	13
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	17	suppressed
Meclizine Hcl	Meclizine Hcl	17	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	17	suppressed
Topiramate	Topiramate	17	suppressed
Arnuity Ellipta	Fluticasone Furoate	16	suppressed
Imipramine Hcl	Imipramine Hcl	16	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	16	suppressed
Morphine Sulfate Er	Morphine Sulfate	16	suppressed
Varenicline Tartrate	Varenicline Tartrate	16	suppressed
Amoxicillin	Amoxicillin	15	suppressed
Azelastine Hcl	Azelastine Hcl	15	suppressed
Citalopram Hbr	Citalopram Hydrobromide	15	suppressed
Clonazepam	Clonazepam	15	suppressed
Hydrocortisone	Hydrocortisone	15	suppressed
Januvia	Sitagliptin Phosphate	15	suppressed
Lansoprazole	Lansoprazole	15	suppressed
Levetiracetam	Levetiracetam	15	suppressed
Paroxetine Hcl	Paroxetine Hcl	15	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	15	suppressed
Breo Ellipta	Fluticasone/Vilanterol	14	suppressed
Glipizide	Glipizide	14	suppressed
Ipratropium Bromide	Ipratropium Bromide	14	suppressed
Labetalol Hcl	Labetalol Hcl	14	suppressed
Metronidazole	Metronidazole	14	suppressed
Ondansetron Hcl	Ondansetron Hcl	14	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	14	14
Torsemide	Torsemide	14	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	14	12
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	13	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	13	suppressed
Bupropion Hcl	Bupropion Hcl	13	suppressed
Cholestyramine	Cholestyramine (With Sugar)	13	suppressed
Eplerenone	Eplerenone	13	suppressed
Zonisamide	Zonisamide	13	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	12	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	12	suppressed
Fenofibrate	Fenofibrate	12	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	12	suppressed
Hydroxyzine Pamoate	Hydroxyzine Pamoate	12	suppressed
Memantine Hcl	Memantine Hcl	12	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	12	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	11	suppressed
Baclofen	Baclofen	11	suppressed
Candesartan-Hydrochlorothiazid	Candesartan/Hydrochlorothiazid	11	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	11	suppressed
Nebivolol Hcl	Nebivolol Hcl	11	suppressed
Rybelsus	Semaglutide	11	suppressed
Sucralfate	Sucralfate	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