Healthcare provider profile · identity verified

Sandra Seier, M.D.

Family Practice · MARTINEZ, CA · NPI 1831260017

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

BrandGenericClaimsBeneficiaries
Atorvastatin CalciumAtorvastatin Calcium453177
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen32590
Levothyroxine SodiumLevothyroxine Sodium301106
LisinoprilLisinopril286109
Losartan PotassiumLosartan Potassium25396
Amlodipine BesylateAmlodipine Besylate238100
Albuterol Sulfate HfaAlbuterol Sulfate215110
Fluticasone PropionateFluticasone Propionate17764
Tizanidine HclTizanidine Hcl17653
HydrochlorothiazideHydrochlorothiazide17465
Trazodone HclTrazodone Hcl15761
AtenololAtenolol15658
GabapentinGabapentin15660
OmeprazoleOmeprazole15259
IbuprofenIbuprofen13760
FurosemideFurosemide13659
SimvastatinSimvastatin13052
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen11518
FamotidineFamotidine11150
AlvescoCiclesonide10865
Pantoprazole SodiumPantoprazole Sodium10542
LorazepamLorazepam10329
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide9131
Morphine Sulfate ErMorphine Sulfate8914
Sertraline HclSertraline Hcl8836
Metoprolol TartrateMetoprolol Tartrate8336
Wixela InhubFluticasone Propion/Salmeterol8126
Tramadol HclTramadol Hcl7824
Metformin Hcl ErMetformin Hcl7338
AzithromycinAzithromycin7061
Metformin HclMetformin Hcl7029
PrednisonePrednisone7056
Ondansetron HclOndansetron Hcl6117
Metoprolol SuccinateMetoprolol Succinate6023
Tamsulosin HclTamsulosin Hcl6021
Oxycodone HclOxycodone Hcl5915
MeloxicamMeloxicam5721
PradaxaDabigatran Etexilate Mesylate5118
Fluoxetine HclFluoxetine Hcl5021
Hydroxyzine HclHydroxyzine Hcl5017
LovastatinLovastatin5019
NabumetoneNabumetone4914
Potassium ChloridePotassium Chloride4921
GlipizideGlipizide4717
AllopurinolAllopurinol4522
Sumatriptan SuccinateSumatriptan Succinate4411
BaclofenBaclofen4312
Duloxetine HclDuloxetine Hcl4317
FluocinonideFluocinonide4228
Montelukast SodiumMontelukast Sodium4119
HydrocortisoneHydrocortisone3923
AmoxicillinAmoxicillin3728
Ondansetron OdtOndansetron3719
Zolpidem TartrateZolpidem Tartrate37suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst3631
MetronidazoleMetronidazole3517
MirtazapineMirtazapine35suppressed
OzempicSemaglutide35suppressed
Acetaminophen-CodeineAcetaminophen With Codeine3316
NaproxenNaproxen3316
CarvedilolCarvedilol3214
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide3115
Pravastatin SodiumPravastatin Sodium3112
Spiriva RespimatTiotropium Bromide31suppressed
Triamcinolone AcetonideTriamcinolone Acetonide3120
JardianceEmpagliflozin3013
Escitalopram OxalateEscitalopram Oxalate2911
Nystatin-TriamcinoloneNystatin/Triamcinolone Acet29suppressed
Terazosin HclTerazosin Hcl29suppressed
ColchicineColchicine2716
Alendronate SodiumAlendronate Sodium2612
Azelastine HclAzelastine Hcl2613
Venlafaxine Hcl ErVenlafaxine Hcl25suppressed
Bupropion Hcl SrBupropion Hcl24suppressed
CephalexinCephalexin2424
Citalopram HbrCitalopram Hydrobromide24suppressed
Doxycycline MonohydrateDoxycycline Monohydrate2419
Clindamycin HclClindamycin Hcl2312
Diltiazem 24hr Er (Cd)Diltiazem Hcl23suppressed
Propranolol HclPropranolol Hcl23suppressed
Rosuvastatin CalciumRosuvastatin Calcium2311
MethocarbamolMethocarbamol2211
Ciprofloxacin HclCiprofloxacin Hcl2120
DiazepamDiazepam21suppressed
Glipizide ErGlipizide2112
AcyclovirAcyclovir20suppressed
Bupropion XlBupropion Hcl20suppressed
NitroglycerinNitroglycerin2011
Nortriptyline HclNortriptyline Hcl19suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1715
Hydralazine HclHydralazine Hcl17suppressed
SpironolactoneSpironolactone17suppressed
ValacyclovirValacyclovir Hcl1712
Adacel TdapDiph,pertuss(Acell),tet Vac/Pf1616
CholestyramineCholestyramine (With Sugar)16suppressed
Combivent RespimatIpratropium/Albuterol Sulfate16suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1614
Clobetasol PropionateClobetasol Propionate1511
Insulin Glargine-YfgnInsulin Glargine-Yfgn15suppressed
Tramadol Hcl ErTramadol Hcl15suppressed
Amiodarone HclAmiodarone Hcl14suppressed
FluconazoleFluconazole1411
Maxalt MltRizatriptan Benzoate14suppressed
Oxybutynin Chloride ErOxybutynin Chloride14suppressed
Verapamil ErVerapamil Hcl14suppressed
Butalbital-Aspirin-CaffeineButalbital/Aspirin/Caffeine13suppressed
CefadroxilCefadroxil1312
Metoclopramide HclMetoclopramide Hcl13suppressed
MupirocinMupirocin13suppressed
Cartia XtDiltiazem Hcl12suppressed
ClonazepamClonazepam12suppressed
Clonidine HclClonidine Hcl12suppressed
EtodolacEtodolac12suppressed
LactuloseLactulose12suppressed
NystatinNystatin12suppressed
TradjentaLinagliptin12suppressed
EliquisApixaban11suppressed
EstradiolEstradiol11suppressed
LevetiracetamLevetiracetam11suppressed
Ropinirole HclRopinirole Hcl11suppressed
TopiramateTopiramate11suppressed

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.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
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