Healthcare provider profile · identity verified

Sergio Viera

Family Practice · GARDENA, CA · NPI 1265810964

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	561	297
Amlodipine Besylate	Amlodipine Besylate	353	200
Lisinopril	Lisinopril	333	152
Losartan Potassium	Losartan Potassium	273	137
Metformin Hcl	Metformin Hcl	239	100
Meloxicam	Meloxicam	184	130
Rosuvastatin Calcium	Rosuvastatin Calcium	179	99
Levothyroxine Sodium	Levothyroxine Sodium	175	84
Glipizide	Glipizide	160	75
Simvastatin	Simvastatin	159	79
Metformin Hcl Er	Metformin Hcl	143	71
Hydrochlorothiazide	Hydrochlorothiazide	138	71
Metoprolol Tartrate	Metoprolol Tartrate	135	67
Omeprazole	Omeprazole	133	77
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	129	62
Atenolol	Atenolol	106	60
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	82	36
Tamsulosin Hcl	Tamsulosin Hcl	82	39
Alendronate Sodium	Alendronate Sodium	78	32
Gabapentin	Gabapentin	77	55
Albuterol Sulfate Hfa	Albuterol Sulfate	71	59
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	69	44
Humulin N Kwikpen	Insulin Nph Human Isophane	68	33
Terazosin Hcl	Terazosin Hcl	67	29
Pantoprazole Sodium	Pantoprazole Sodium	61	31
Ibuprofen	Ibuprofen	59	36
Pradaxa	Dabigatran Etexilate Mesylate	51	22
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	49	22
Triamcinolone Acetonide	Triamcinolone Acetonide	48	24
Hydralazine Hcl	Hydralazine Hcl	46	23
Potassium Chloride	Potassium Chloride	45	33
Spironolactone	Spironolactone	44	23
Trazodone Hcl	Trazodone Hcl	43	28
Furosemide	Furosemide	38	26
Spiriva Respimat	Tiotropium Bromide	38	14
Humulin N	Insulin Nph Human Isophane	36	16
Benazepril Hcl	Benazepril Hcl	35	17
Jardiance	Empagliflozin	35	19
Ozempic	Semaglutide	35	17
Mirtazapine	Mirtazapine	33	16
Bisoprolol Fumarate	Bisoprolol Fumarate	32	18
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	32	20
Terbinafine Hcl	Terbinafine Hcl	32	15
Glipizide Er	Glipizide	31	14
Carvedilol	Carvedilol	30	15
Ipratropium Bromide	Ipratropium Bromide	30	27
Famotidine	Famotidine	29	14
Lovastatin	Lovastatin	29	14
Veo Insulin Syringe	Syringe And Needle,insulin,1ml	29	13
Allopurinol	Allopurinol	28	16
Ezetimibe	Ezetimibe	28	14
Clopidogrel	Clopidogrel Bisulfate	27	14
Duloxetine Hcl	Duloxetine Hcl	27	17
Lorazepam	Lorazepam	27	19
Hydrocortisone	Hydrocortisone	26	14
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	26	17
Adacel Tdap	Diph,pertuss(Acell),tet Vac/Pf	24	24
Finasteride	Finasteride	24	13
Fluticasone Propionate	Fluticasone Propionate	24	14
Lactulose	Lactulose	24	14
Fluoxetine Hcl	Fluoxetine Hcl	22	suppressed
Alvesco	Ciclesonide	21	15
Montelukast Sodium	Montelukast Sodium	21	14
Prednisone	Prednisone	21	20
Clonidine Hcl	Clonidine Hcl	20	suppressed
Veo Insulin Syringe	Syringe-Needle,insulin,0.5 Ml	19	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	19	12
Azelastine Hcl	Azelastine Hcl	18	15
Buspirone Hcl	Buspirone Hcl	17	suppressed
Chlorthalidone	Chlorthalidone	17	suppressed
Nifedipine Er	Nifedipine	17	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	17	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	16	suppressed
Bupropion Hcl Sr	Bupropion Hcl	15	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	15	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	15	suppressed
Humulin R	Insulin Regular, Human	13	suppressed
Nabumetone	Nabumetone	13	13
Ondansetron Odt	Ondansetron	13	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	12	12
Naproxen	Naproxen	12	11
Xarelto	Rivaroxaban	12	suppressed
Cefadroxil	Cefadroxil	11	11
Citalopram Hbr	Citalopram Hydrobromide	11	suppressed
Colchicine	Colchicine	11	suppressed
Sertraline Hcl	Sertraline Hcl	11	suppressed
Victoza 2-Pak	Liraglutide	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