Healthcare provider profile · identity verified

Matthew J Kaiser, M.D.

Family Practice · EUGENE, OR · NPI 1720374069

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	605	184
Levothyroxine Sodium	Levothyroxine Sodium	340	81
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	292	62
Lisinopril	Lisinopril	286	80
Amlodipine Besylate	Amlodipine Besylate	231	68
Losartan Potassium	Losartan Potassium	231	69
Omeprazole	Omeprazole	180	59
Metoprolol Succinate	Metoprolol Succinate	169	54
Pravastatin Sodium	Pravastatin Sodium	160	47
Pantoprazole Sodium	Pantoprazole Sodium	157	42
Eliquis	Apixaban	155	37
Tamsulosin Hcl	Tamsulosin Hcl	151	47
Hydrochlorothiazide	Hydrochlorothiazide	149	47
Simvastatin	Simvastatin	144	43
Metformin Hcl	Metformin Hcl	136	39
Furosemide	Furosemide	135	42
Gabapentin	Gabapentin	125	36
Albuterol Sulfate Hfa	Albuterol Sulfate	124	42
Potassium Chloride	Potassium Chloride	122	34
Tramadol Hcl	Tramadol Hcl	119	37
Oxycodone Hcl	Oxycodone Hcl	115	27
Sertraline Hcl	Sertraline Hcl	114	27
Lorazepam	Lorazepam	95	24
Metoprolol Tartrate	Metoprolol Tartrate	93	27
Duloxetine Hcl	Duloxetine Hcl	92	20
Ozempic	Semaglutide	84	17
Carvedilol	Carvedilol	83	27
Trazodone Hcl	Trazodone Hcl	77	27
Rosuvastatin Calcium	Rosuvastatin Calcium	74	23
Tizanidine Hcl	Tizanidine Hcl	69	18
Clonazepam	Clonazepam	68	15
Fluoxetine Hcl	Fluoxetine Hcl	63	15
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	63	12
Metformin Hcl Er	Metformin Hcl	62	17
Atenolol	Atenolol	61	15
Venlafaxine Hcl Er	Venlafaxine Hcl	61	13
Fluticasone Propionate	Fluticasone Propionate	60	20
Allopurinol	Allopurinol	59	17
Irbesartan	Irbesartan	59	18
Alprazolam	Alprazolam	55	13
Spironolactone	Spironolactone	52	13
Zolpidem Tartrate	Zolpidem Tartrate	52	19
Buspirone Hcl	Buspirone Hcl	51	suppressed
Buprenorphine Hcl	Buprenorphine Hcl	50	suppressed
Methocarbamol	Methocarbamol	50	suppressed
Jardiance	Empagliflozin	49	15
Trulicity	Dulaglutide	48	suppressed
Bupropion Hcl Sr	Bupropion Hcl	45	14
Glipizide	Glipizide	45	suppressed
Montelukast Sodium	Montelukast Sodium	44	14
Hydroxyzine Hcl	Hydroxyzine Hcl	42	suppressed
Lovastatin	Lovastatin	42	11
Methadone Hcl	Methadone Hcl	42	suppressed
Pregabalin	Pregabalin	41	14
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	40	19
Warfarin Sodium	Warfarin Sodium	40	13
Escitalopram Oxalate	Escitalopram Oxalate	39	13
Propranolol Hcl	Propranolol Hcl	39	suppressed
Meloxicam	Meloxicam	37	14
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	36	suppressed
Famotidine	Famotidine	36	14
Oxybutynin Chloride Er	Oxybutynin Chloride	36	12
Alendronate Sodium	Alendronate Sodium	35	14
Triamcinolone Acetonide	Triamcinolone Acetonide	34	25
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	33	12
Clopidogrel	Clopidogrel Bisulfate	31	12
Torsemide	Torsemide	31	13
Citalopram Hbr	Citalopram Hydrobromide	30	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	30	11
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	30	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	29	suppressed
Celecoxib	Celecoxib	29	suppressed
Donepezil Hcl	Donepezil Hcl	29	suppressed
Acyclovir	Acyclovir	28	suppressed
Diclofenac Sodium	Diclofenac Sodium	28	13
Doxazosin Mesylate	Doxazosin Mesylate	28	suppressed
Glipizide Er	Glipizide	28	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	26	suppressed
Klor-Con M20	Potassium Chloride	25	suppressed
Spiriva Respimat	Tiotropium Bromide	24	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	23	suppressed
Ezetimibe	Ezetimibe	23	suppressed
Finasteride	Finasteride	23	suppressed
Mirtazapine	Mirtazapine	23	suppressed
Ventolin Hfa	Albuterol Sulfate	23	suppressed
Bupropion Xl	Bupropion Hcl	22	suppressed
Ropinirole Hcl	Ropinirole Hcl	21	suppressed
Clobetasol Propionate	Clobetasol Propionate	20	11
Paroxetine Hcl	Paroxetine Hcl	20	suppressed
Rizatriptan	Rizatriptan Benzoate	20	suppressed
Terazosin Hcl	Terazosin Hcl	20	suppressed
Valsartan	Valsartan	20	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	19	suppressed
Nitroglycerin	Nitroglycerin	19	15
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	19	16
Valacyclovir	Valacyclovir Hcl	19	11
Baclofen	Baclofen	18	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	18	suppressed
Lansoprazole	Lansoprazole	18	suppressed
Ondansetron Hcl	Ondansetron Hcl	18	11
Symbicort	Budesonide/Formoterol Fumarate	18	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	18	suppressed
Xtampza Er	Oxycodone Myristate	18	suppressed
Olanzapine	Olanzapine	17	suppressed
Promethazine Hcl	Promethazine Hcl	17	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	17	suppressed
Colchicine	Colchicine	16	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	16	suppressed
Ibuprofen	Ibuprofen	16	suppressed
Prednisone	Prednisone	16	16
Ramipril	Ramipril	16	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	15	suppressed
Dulera	Mometasone/Formoterol	15	suppressed
Fluticasone Propionate Hfa	Fluticasone Propionate	15	suppressed
Ipratropium Bromide	Ipratropium Bromide	15	suppressed
Enalapril Maleate	Enalapril Maleate	14	suppressed
Divalproex Sodium Er	Divalproex Sodium	13	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	13	13
Testosterone Cypionate	Testosterone Cypionate	13	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	13	suppressed
Amiloride Hcl	Amiloride Hcl	12	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	12	suppressed
Desvenlafaxine Succinate Er	Desvenlafaxine Succinate	12	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	12	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	12	suppressed
Levemir	Insulin Detemir	12	suppressed
Naproxen	Naproxen	12	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	12	suppressed
Phenobarbital	Phenobarbital	12	suppressed
Eszopiclone	Eszopiclone	11	suppressed
Humulin N	Insulin Nph Human Isophane	11	suppressed
Indomethacin	Indomethacin	11	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	11	suppressed
Mupirocin	Mupirocin	11	suppressed
Sucralfate	Sucralfate	11	suppressed
Telmisartan	Telmisartan	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