Healthcare provider profile · identity verified

Mark B Lyon, M.D.

Family Practice · EUGENE, OR · NPI 1447227434

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	439	129
Levothyroxine Sodium	Levothyroxine Sodium	386	84
Metoprolol Succinate	Metoprolol Succinate	307	83
Losartan Potassium	Losartan Potassium	303	91
Lisinopril	Lisinopril	219	62
Zolpidem Tartrate	Zolpidem Tartrate	218	34
Pravastatin Sodium	Pravastatin Sodium	210	60
Amlodipine Besylate	Amlodipine Besylate	206	57
Pantoprazole Sodium	Pantoprazole Sodium	203	61
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	189	43
Metformin Hcl	Metformin Hcl	167	42
Simvastatin	Simvastatin	159	44
Eliquis	Apixaban	155	36
Omeprazole	Omeprazole	154	41
Gabapentin	Gabapentin	141	40
Hydrochlorothiazide	Hydrochlorothiazide	140	36
Tamsulosin Hcl	Tamsulosin Hcl	122	35
Tramadol Hcl	Tramadol Hcl	114	29
Oxycodone Hcl	Oxycodone Hcl	112	22
Diclofenac Sodium	Diclofenac Sodium	105	47
Fluoxetine Hcl	Fluoxetine Hcl	104	28
Lorazepam	Lorazepam	99	29
Albuterol Sulfate Hfa	Albuterol Sulfate	98	37
Furosemide	Furosemide	93	34
Meloxicam	Meloxicam	89	38
Escitalopram Oxalate	Escitalopram Oxalate	81	22
Metformin Hcl Er	Metformin Hcl	77	20
Rosuvastatin Calcium	Rosuvastatin Calcium	76	25
Raloxifene Hcl	Raloxifene Hcl	73	18
Carvedilol	Carvedilol	71	20
Donepezil Hcl	Donepezil Hcl	70	17
Allopurinol	Allopurinol	66	20
Nortriptyline Hcl	Nortriptyline Hcl	66	14
Sertraline Hcl	Sertraline Hcl	66	20
Xarelto	Rivaroxaban	66	17
Trazodone Hcl	Trazodone Hcl	65	19
Estradiol	Estradiol	63	24
Potassium Chloride	Potassium Chloride	58	16
Warfarin Sodium	Warfarin Sodium	58	18
Tizanidine Hcl	Tizanidine Hcl	57	23
Duloxetine Hcl	Duloxetine Hcl	56	17
Alprazolam	Alprazolam	54	17
Famotidine	Famotidine	54	17
Glimepiride	Glimepiride	49	11
Ibandronate Sodium	Ibandronate Sodium	48	15
Montelukast Sodium	Montelukast Sodium	48	14
Doxazosin Mesylate	Doxazosin Mesylate	47	13
Bupropion Xl	Bupropion Hcl	44	16
Clonazepam	Clonazepam	43	13
Glipizide	Glipizide	43	11
Fluticasone Propionate	Fluticasone Propionate	41	15
Diazepam	Diazepam	40	13
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	40	suppressed
Valsartan	Valsartan	39	11
Celecoxib	Celecoxib	38	12
Venlafaxine Hcl Er	Venlafaxine Hcl	37	suppressed
Mirtazapine	Mirtazapine	36	suppressed
Clopidogrel	Clopidogrel Bisulfate	35	suppressed
Irbesartan	Irbesartan	34	suppressed
Spironolactone	Spironolactone	33	suppressed
Ciclopirox	Ciclopirox Olamine	32	14
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	32	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	32	suppressed
Jardiance	Empagliflozin	32	suppressed
Eszopiclone	Eszopiclone	31	suppressed
Propranolol Hcl	Propranolol Hcl	31	suppressed
Acyclovir	Acyclovir	30	11
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	30	suppressed
Synthroid	Levothyroxine Sodium	30	suppressed
Fentanyl	Fentanyl	29	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	29	suppressed
Prednisone	Prednisone	29	13
Pregabalin	Pregabalin	28	suppressed
Metoprolol Tartrate	Metoprolol Tartrate	26	suppressed
Testosterone Cypionate	Testosterone Cypionate	25	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	25	suppressed
Atenolol	Atenolol	24	suppressed
Ibuprofen	Ibuprofen	24	suppressed
Paroxetine Hcl	Paroxetine Hcl	24	suppressed
Verapamil Er	Verapamil Hcl	24	suppressed
Citalopram Hbr	Citalopram Hydrobromide	23	suppressed
Methadone Hcl	Methadone Hcl	23	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	22	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	22	22
Digoxin	Digoxin	21	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	21	suppressed
Finasteride	Finasteride	20	suppressed
Ondansetron Hcl	Ondansetron Hcl	20	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	20	17
Azithromycin	Azithromycin	19	19
Terazosin Hcl	Terazosin Hcl	19	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	18	13
Zaleplon	Zaleplon	18	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	17	suppressed
Cephalexin	Cephalexin	17	15
Fluticasone Propionate Hfa	Fluticasone Propionate	17	suppressed
Medroxyprogesterone Acetate	Medroxyprogesterone Acetate	17	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	16	suppressed
Bupropion Hcl Sr	Bupropion Hcl	16	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	16	suppressed
Methocarbamol	Methocarbamol	16	suppressed
Olanzapine	Olanzapine	16	suppressed
Torsemide	Torsemide	16	suppressed
Baclofen	Baclofen	15	suppressed
Entresto	Sacubitril/Valsartan	15	suppressed
Lamotrigine	Lamotrigine	15	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	15	suppressed
Levetiracetam	Levetiracetam	15	suppressed
Naproxen	Naproxen	15	suppressed
Novolog Flexpen	Insulin Aspart	15	suppressed
Verapamil Sr	Verapamil Hcl	15	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	14	suppressed
Benazepril Hcl	Benazepril Hcl	14	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	14	suppressed
Famciclovir	Famciclovir	14	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	13	suppressed
Fluconazole	Fluconazole	13	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	13	suppressed
Oxycontin	Oxycodone Hcl	13	suppressed
Pen Needle	Pen Needle, Diabetic	13	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	13	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	12	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	12	suppressed
Fesoterodine Fumarate Er	Fesoterodine Fumarate	12	suppressed
Memantine Hcl	Memantine Hcl	12	suppressed
Ezetimibe	Ezetimibe	11	suppressed
Fluocinonide	Fluocinonide	11	suppressed
Galantamine Er	Galantamine Hbr	11	suppressed
Humulin 70/30 Kwikpen	Insulin Nph Hum/Reg Insulin Hm	11	suppressed
Indomethacin	Indomethacin	11	suppressed
Methylprednisolone	Methylprednisolone	11	suppressed
Midodrine Hcl	Midodrine Hcl	11	suppressed
Myrbetriq	Mirabegron	11	suppressed
Nitroglycerin	Nitroglycerin	11	suppressed
Premarin	Estrogens, Conjugated	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

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