Healthcare provider profile · identity verified

Matthew N. Joseph, MD

Family Practice · SANTA ROSA, CA · NPI 1659455624

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	525	202
Amlodipine Besylate	Amlodipine Besylate	263	109
Levothyroxine Sodium	Levothyroxine Sodium	246	95
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	240	53
Lisinopril	Lisinopril	234	91
Losartan Potassium	Losartan Potassium	200	89
Albuterol Sulfate Hfa	Albuterol Sulfate	191	96
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	184	71
Pantoprazole Sodium	Pantoprazole Sodium	175	63
Trazodone Hcl	Trazodone Hcl	165	66
Metoprolol Tartrate	Metoprolol Tartrate	153	56
Lorazepam	Lorazepam	149	45
Nabumetone	Nabumetone	142	76
Famotidine	Famotidine	137	55
Gabapentin	Gabapentin	127	50
Fluticasone Propionate	Fluticasone Propionate	118	35
Hydrochlorothiazide	Hydrochlorothiazide	117	49
Terazosin Hcl	Terazosin Hcl	115	36
Buprenorphine	Buprenorphine	114	29
Tamsulosin Hcl	Tamsulosin Hcl	105	43
Prednisone	Prednisone	101	69
Metformin Hcl Er	Metformin Hcl	97	44
Omeprazole	Omeprazole	94	44
Alendronate Sodium	Alendronate Sodium	92	38
Meloxicam	Meloxicam	86	30
Alvesco	Ciclesonide	84	31
Atenolol	Atenolol	83	30
Temazepam	Temazepam	80	27
Tizanidine Hcl	Tizanidine Hcl	79	37
Metformin Hcl	Metformin Hcl	71	30
Allopurinol	Allopurinol	68	30
Simvastatin	Simvastatin	64	33
Doxycycline Monohydrate	Doxycycline Monohydrate	63	61
Furosemide	Furosemide	63	27
Citalopram Hbr	Citalopram Hydrobromide	62	26
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	60	51
Tramadol Hcl	Tramadol Hcl	60	20
Fluoxetine Hcl	Fluoxetine Hcl	59	22
Pradaxa	Dabigatran Etexilate Mesylate	58	21
Metoprolol Succinate	Metoprolol Succinate	57	26
Spironolactone	Spironolactone	55	24
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	53	25
Azelastine Hcl	Azelastine Hcl	49	14
Propranolol Hcl	Propranolol Hcl	48	18
Carvedilol	Carvedilol	47	23
Glipizide	Glipizide	47	20
Ibuprofen	Ibuprofen	46	22
Oxycodone Hcl	Oxycodone Hcl	44	11
Betamethasone Valerate	Betamethasone Valerate	42	29
Montelukast Sodium	Montelukast Sodium	42	16
Quetiapine Fumarate	Quetiapine Fumarate	42	14
Veo Insulin Syringe	Syringe-Needle,insulin,0.5 Ml	42	15
Zolpidem Tartrate	Zolpidem Tartrate	42	14
Escitalopram Oxalate	Escitalopram Oxalate	40	12
Breyna	Budesonide/Formoterol Fumarate	39	28
Mirtazapine	Mirtazapine	39	22
Venlafaxine Hcl Er	Venlafaxine Hcl	39	11
Ciprofloxacin Hcl	Ciprofloxacin Hcl	38	21
Ondansetron Hcl	Ondansetron Hcl	38	24
Clonazepam	Clonazepam	37	suppressed
Ondansetron Odt	Ondansetron	35	13
Sertraline Hcl	Sertraline Hcl	35	14
Trospium Chloride	Trospium Chloride	35	17
Wixela Inhub	Fluticasone Propion/Salmeterol	34	19
Cefadroxil	Cefadroxil	33	28
Duloxetine Hcl	Duloxetine Hcl	33	11
Finasteride	Finasteride	33	12
Acyclovir	Acyclovir	32	18
Potassium Chloride	Potassium Chloride	32	15
Spiriva Respimat	Tiotropium Bromide	32	13
Acetaminophen-Codeine	Acetaminophen With Codeine	31	suppressed
Clopidogrel	Clopidogrel Bisulfate	31	15
Venlafaxine Hcl	Venlafaxine Hcl	31	suppressed
Ibandronate Sodium	Ibandronate Sodium	30	suppressed
Baclofen	Baclofen	28	13
Celecoxib	Celecoxib	28	suppressed
Cephalexin	Cephalexin	28	15
Sumatriptan Succinate	Sumatriptan Succinate	28	11
Estradiol	Estradiol	27	17
Humulin N	Insulin Nph Human Isophane	27	14
Hydroxyzine Hcl	Hydroxyzine Hcl	26	18
Clobetasol Propionate	Clobetasol Propionate	25	15
Levetiracetam	Levetiracetam	25	suppressed
Rizatriptan	Rizatriptan Benzoate	25	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	25	20
Lactulose	Lactulose	24	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	24	24
Adacel Tdap	Diph,pertuss(Acell),tet Vac/Pf	23	23
Bupropion Hcl Sr	Bupropion Hcl	22	suppressed
Rosuvastatin Calcium	Rosuvastatin Calcium	22	11
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	21	11
Amoxicillin	Amoxicillin	20	14
Donepezil Hcl	Donepezil Hcl	20	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	19	suppressed
Jardiance	Empagliflozin	19	suppressed
Neomycin-Polymyxin-Dexameth	Neomycin/Polymyxin B/Dexametha	19	19
Nystatin	Nystatin	19	12
Hydralazine Hcl	Hydralazine Hcl	18	suppressed
Methocarbamol	Methocarbamol	18	suppressed
Minoxidil	Minoxidil	18	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	18	suppressed
Procto-Med Hc	Hydrocortisone	18	suppressed
Azithromycin	Azithromycin	17	17
Glipizide Er	Glipizide	17	suppressed
Metronidazole	Metronidazole	17	12
Pregabalin	Pregabalin	17	suppressed
Retin-A	Tretinoin	17	suppressed
Ropinirole Hcl	Ropinirole Hcl	17	suppressed
Sucralfate	Sucralfate	17	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	16	suppressed
Divalproex Sodium	Divalproex Sodium	16	suppressed
Ipratropium Bromide	Ipratropium Bromide	16	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	16	suppressed
Xifaxan	Rifaximin	16	suppressed
Ketoconazole	Ketoconazole	15	suppressed
Memantine Hcl	Memantine Hcl	15	suppressed
Methenamine Hippurate	Methenamine Hippurate	14	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	14	suppressed
Stiolto Respimat	Tiotropium Br/Olodaterol Hcl	14	suppressed
Valacyclovir	Valacyclovir Hcl	14	11
Veo Insulin Syringe	Syrge-Ndl,ins 0.3 Ml Half Mark	14	suppressed
Betamethasone Dipropionate	Betamethasone Dipropionate	13	suppressed
Naproxen	Naproxen	13	suppressed
Tadalafil	Tadalafil	13	suppressed
Topiramate	Topiramate	13	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	12	suppressed
Bupropion Xl	Bupropion Hcl	12	suppressed
Humulin R	Insulin Regular, Human	12	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	12	suppressed
Primidone	Primidone	12	suppressed
Varenicline Tartrate	Varenicline Tartrate	12	suppressed
Warfarin Sodium	Warfarin Sodium	12	suppressed
Aripiprazole	Aripiprazole	11	suppressed
Eszopiclone	Eszopiclone	11	suppressed
Morphine Sulfate	Morphine Sulfate	11	suppressed
Progesterone	Progesterone, Micronized	11	suppressed
Testosterone	Testosterone	11	suppressed
Testosterone Cypionate	Testosterone Cypionate	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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