Healthcare provider profile · identity verified

Andrew M Siber, M.D.

Internal Medicine · UXBRIDGE, MA · NPI 1083787220

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 Calcium645178
LisinoprilLisinopril33284
Amlodipine BesylateAmlodipine Besylate30778
Losartan PotassiumLosartan Potassium23366
OmeprazoleOmeprazole19449
Rosuvastatin CalciumRosuvastatin Calcium18756
HydrochlorothiazideHydrochlorothiazide18649
Metoprolol SuccinateMetoprolol Succinate15341
Levothyroxine SodiumLevothyroxine Sodium14936
Escitalopram OxalateEscitalopram Oxalate12434
GabapentinGabapentin11535
Metformin HclMetformin Hcl10932
EliquisApixaban10626
Pantoprazole SodiumPantoprazole Sodium10222
Sertraline HclSertraline Hcl9625
SimvastatinSimvastatin9323
Duloxetine HclDuloxetine Hcl6716
Trazodone HclTrazodone Hcl6421
Bupropion XlBupropion Hcl6216
Zolpidem TartrateZolpidem Tartrate6114
AtenololAtenolol5817
Fluticasone PropionateFluticasone Propionate5817
Albuterol Sulfate HfaAlbuterol Sulfate5415
MirtazapineMirtazapine5214
Tamsulosin HclTamsulosin Hcl5215
LorazepamLorazepam4919
Metoprolol TartrateMetoprolol Tartrate4914
CelecoxibCelecoxib43suppressed
FurosemideFurosemide4315
Metformin Hcl ErMetformin Hcl41suppressed
Pravastatin SodiumPravastatin Sodium41suppressed
OzempicSemaglutide38suppressed
RybelsusSemaglutide38suppressed
Meclizine HclMeclizine Hcl37suppressed
AllopurinolAllopurinol3611
CarbamazepineCarbamazepine34suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen3215
JardianceEmpagliflozin31suppressed
Oxycodone HclOxycodone Hcl31suppressed
PregabalinPregabalin31suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl3016
MyrbetriqMirabegron30suppressed
Ventolin HfaAlbuterol Sulfate29suppressed
XareltoRivaroxaban29suppressed
DiazepamDiazepam28suppressed
TrulicityDulaglutide27suppressed
PrednisonePrednisone26suppressed
ClonazepamClonazepam24suppressed
NystatinNystatin24suppressed
OxycontinOxycodone Hcl24suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic23suppressed
BaclofenBaclofen22suppressed
CarvedilolCarvedilol21suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl21suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide20suppressed
MounjaroTirzepatide20suppressed
ValsartanValsartan19suppressed
Enalapril MaleateEnalapril Maleate18suppressed
FinasterideFinasteride18suppressed
Ondansetron HclOndansetron Hcl18suppressed
Alendronate SodiumAlendronate Sodium17suppressed
Buspirone HclBuspirone Hcl17suppressed
Fluoxetine HclFluoxetine Hcl17suppressed
Olmesartan MedoxomilOlmesartan Medoxomil17suppressed
Spiriva HandihalerTiotropium Bromide17suppressed
Triamcinolone AcetonideTriamcinolone Acetonide17suppressed
TorsemideTorsemide16suppressed
AlprazolamAlprazolam15suppressed
Breo ElliptaFluticasone/Vilanterol15suppressed
ChlorthalidoneChlorthalidone15suppressed
Felodipine ErFelodipine15suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog15suppressed
Ultra-Fine Original Pen NeedlePen Needle, Diabetic15suppressed
Wixela InhubFluticasone Propion/Salmeterol15suppressed
Citalopram HbrCitalopram Hydrobromide14suppressed
Lidocaine Hcl ViscousLidocaine Hcl14suppressed
AmoxicillinAmoxicillin13suppressed
AripiprazoleAripiprazole13suppressed
Hydroxyzine HclHydroxyzine Hcl13suppressed
Incruse ElliptaUmeclidinium Bromide13suppressed
SpironolactoneSpironolactone13suppressed
Tizanidine HclTizanidine Hcl13suppressed
Atenolol-ChlorthalidoneAtenolol/Chlorthalidone12suppressed
ClopidogrelClopidogrel Bisulfate12suppressed
FamotidineFamotidine12suppressed
FentanylFentanyl12suppressed
Methylphenidate HclMethylphenidate Hcl12suppressed
NitrofurantoinNitrofurantoin Macrocrystal12suppressed
Paroxetine HclParoxetine Hcl12suppressed
Potassium ChloridePotassium Chloride12suppressed
Warfarin SodiumWarfarin Sodium12suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr11suppressed
CreonLipase/Protease/Amylase11suppressed
Klor-Con M20Potassium Chloride11suppressed
MethocarbamolMethocarbamol11suppressed

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