Healthcare provider profile · identity verified

Eric J. Messner, MD

Internal Medicine · SANTA CLARA, CA · NPI 1578640413

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
Amlodipine Besylate	Amlodipine Besylate	410	120
Rosuvastatin Calcium	Rosuvastatin Calcium	353	112
Atorvastatin Calcium	Atorvastatin Calcium	332	99
Losartan Potassium	Losartan Potassium	292	86
Levothyroxine Sodium	Levothyroxine Sodium	274	75
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	247	40
Tamsulosin Hcl	Tamsulosin Hcl	200	69
Gabapentin	Gabapentin	166	57
Famotidine	Famotidine	164	59
Prednisone	Prednisone	158	94
Hydrochlorothiazide	Hydrochlorothiazide	150	48
Metformin Hcl Er	Metformin Hcl	148	51
Pantoprazole Sodium	Pantoprazole Sodium	146	57
Trazodone Hcl	Trazodone Hcl	146	41
Atenolol	Atenolol	137	36
Metoprolol Tartrate	Metoprolol Tartrate	134	37
Lisinopril	Lisinopril	130	39
Fluticasone Propionate	Fluticasone Propionate	114	44
Omeprazole	Omeprazole	112	41
Spironolactone	Spironolactone	112	31
Furosemide	Furosemide	111	43
Ozempic	Semaglutide	110	16
Alendronate Sodium	Alendronate Sodium	102	36
Potassium Chloride	Potassium Chloride	102	39
Albuterol Sulfate Hfa	Albuterol Sulfate	94	49
Lactulose	Lactulose	92	28
Eliquis	Apixaban	82	21
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	80	15
Jardiance	Empagliflozin	79	21
Escitalopram Oxalate	Escitalopram Oxalate	72	21
Torsemide	Torsemide	71	20
Meloxicam	Meloxicam	67	34
Pradaxa	Dabigatran Etexilate Mesylate	61	21
Spiriva Respimat	Tiotropium Bromide	60	18
Terazosin Hcl	Terazosin Hcl	60	18
Finasteride	Finasteride	59	17
Simvastatin	Simvastatin	59	18
Azithromycin	Azithromycin	56	45
Glipizide	Glipizide	56	19
Metoprolol Succinate	Metoprolol Succinate	56	20
Alvesco	Ciclesonide	55	19
Triamcinolone Acetonide	Triamcinolone Acetonide	55	30
Carvedilol	Carvedilol	54	15
Ezetimibe	Ezetimibe	53	17
Wixela Inhub	Fluticasone Propion/Salmeterol	53	22
Azelastine Hcl	Azelastine Hcl	52	30
Metformin Hcl	Metformin Hcl	52	17
Cephalexin	Cephalexin	50	32
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	50	17
Allopurinol	Allopurinol	49	16
Bupropion Xl	Bupropion Hcl	48	15
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	48	16
Ibuprofen	Ibuprofen	47	15
Tadalafil	Tadalafil	46	14
Minoxidil	Minoxidil	43	13
Hydromorphone Hcl	Hydromorphone Hcl	42	suppressed
Temazepam	Temazepam	40	suppressed
Duloxetine Hcl	Duloxetine Hcl	39	14
Montelukast Sodium	Montelukast Sodium	34	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	34	24
Ondansetron Odt	Ondansetron	34	20
Hydralazine Hcl	Hydralazine Hcl	33	11
Lorazepam	Lorazepam	33	11
Mupirocin	Mupirocin	31	14
Colchicine	Colchicine	30	12
Divalproex Sodium	Divalproex Sodium	30	13
Tramadol Hcl	Tramadol Hcl	30	suppressed
Amoxicillin	Amoxicillin	29	12
Pregabalin	Pregabalin	29	14
Lovastatin	Lovastatin	28	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	27	20
Clobetasol Propionate	Clobetasol Propionate	27	24
Ipratropium Bromide	Ipratropium Bromide	27	13
Celecoxib	Celecoxib	26	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	26	suppressed
Chlorthalidone	Chlorthalidone	25	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	25	suppressed
Acyclovir	Acyclovir	24	11
Citalopram Hbr	Citalopram Hydrobromide	24	suppressed
Mirtazapine	Mirtazapine	24	suppressed
Ropinirole Hcl	Ropinirole Hcl	24	suppressed
Clopidogrel	Clopidogrel Bisulfate	22	suppressed
Hydrocortisone	Hydrocortisone	22	18
Isosorbide Mononitrate Er	Isosorbide Mononitrate	22	suppressed
Sertraline Hcl	Sertraline Hcl	22	suppressed
Trospium Chloride	Trospium Chloride	22	suppressed
Atrovent Hfa	Ipratropium Bromide	21	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	20	18
Nystatin	Nystatin	20	15
Doxycycline Monohydrate	Doxycycline Monohydrate	19	19
Topiramate	Topiramate	19	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	18	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	18	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	18	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	17	suppressed
Pravastatin Sodium	Pravastatin Sodium	17	suppressed
Adacel Tdap	Diph,pertuss(Acell),tet Vac/Pf	16	16
Cholestyramine	Cholestyramine (With Sugar)	16	suppressed
Victoza 2-Pak	Liraglutide	16	suppressed
Cefpodoxime Proxetil	Cefpodoxime Proxetil	15	14
Fludrocortisone Acetate	Fludrocortisone Acetate	15	suppressed
Fluocinonide	Fluocinonide	15	suppressed
Methadone Hcl	Methadone Hcl	15	suppressed
Nabumetone	Nabumetone	15	suppressed
Ultra-Fine Nano Pen Needle	Pen Needle, Diabetic	15	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	14	suppressed
Amiodarone Hcl	Amiodarone Hcl	14	suppressed
Cefadroxil	Cefadroxil	14	11
Lidocaine Hcl Viscous	Lidocaine Hcl	14	suppressed
Sucralfate	Sucralfate	14	suppressed
Chlorhexidine Gluconate	Chlorhexidine Gluconate	13	suppressed
Ciclopirox	Ciclopirox	13	suppressed
Clonazepam	Clonazepam	13	suppressed
Myrbetriq	Mirabegron	13	suppressed
Oxycodone Hcl	Oxycodone Hcl	13	suppressed
Ramelteon	Ramelteon	13	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	13	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	13	suppressed
Calcitonin-Salmon	Calcitonin,salmon,synthetic	12	suppressed
Kerendia	Finerenone	12	suppressed
Naproxen	Naproxen	12	suppressed
Nifedipine Er	Nifedipine	12	suppressed
Nitroglycerin	Nitroglycerin	12	11
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	12	suppressed
Valacyclovir	Valacyclovir Hcl	12	suppressed
Veo Insulin Syringe	Syringe-Needle,insulin,0.5 Ml	12	suppressed
Alprazolam	Alprazolam	11	suppressed
Clonidine Hcl	Clonidine Hcl	11	suppressed
Donepezil Hcl	Donepezil Hcl	11	suppressed
Doxepin Hcl	Doxepin Hcl	11	suppressed
Eplerenone	Eplerenone	11	suppressed
Felodipine Er	Felodipine	11	suppressed
Fluorouracil	Fluorouracil	11	suppressed
Humulin N	Insulin Nph Human Isophane	11	suppressed
Ofloxacin	Ofloxacin	11	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	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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