Healthcare provider profile · identity verified

Ian Gilson, MD

Allopathic & Osteopathic Physicians|Internal Medicine · MILWAUKEE, WI · NPI 1659486744

Profile state: payments and partd 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

CMS Open Payments records show Ian Gilson, MD received $17.25 in general payments during 2025 across 1 reported records.

Amgen Inc. accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 1 associated product.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$17.25

1 reported records · 1 companies

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.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
Amgen Inc. Unresolved — no canonical attribution shown $17.25100.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$17.251

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
REPATHA
Normalized: repatha
Biological Amgen Inc. $17.25 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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.

No publishable same-company prescribing overlap was found in the loaded Part D year. This does not mean the doctor never prescribed a drug reported elsewhere by a paying company.

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 Calcium645163
Amlodipine BesylateAmlodipine Besylate38295
LisinoprilLisinopril25463
Rosuvastatin CalciumRosuvastatin Calcium21967
Losartan PotassiumLosartan Potassium21567
EzetimibeEzetimibe16547
JardianceEmpagliflozin15531
Metoprolol SuccinateMetoprolol Succinate15534
BiktarvyBictegrav/Emtricit/Tenofov Ala13913
Tamsulosin HclTamsulosin Hcl12326
Metformin HclMetformin Hcl11928
Levothyroxine SodiumLevothyroxine Sodium11526
OmeprazoleOmeprazole11534
AllopurinolAllopurinol11226
GabapentinGabapentin10925
ChlorthalidoneChlorthalidone9726
FurosemideFurosemide9318
EliquisApixaban8723
HydrochlorothiazideHydrochlorothiazide8427
MounjaroTirzepatide8112
SpironolactoneSpironolactone7914
Pantoprazole SodiumPantoprazole Sodium7816
FinasterideFinasteride7316
OzempicSemaglutide7011
Trazodone HclTrazodone Hcl6017
Oxycodone HclOxycodone Hcl59suppressed
ClonazepamClonazepam5711
PregabalinPregabalin56suppressed
Sertraline HclSertraline Hcl5611
Metformin Hcl ErMetformin Hcl5518
FarxigaDapagliflozin Propanediol5413
Fluticasone PropionateFluticasone Propionate5419
CarvedilolCarvedilol5311
Albuterol Sulfate HfaAlbuterol Sulfate4719
LorazepamLorazepam4612
Escitalopram OxalateEscitalopram Oxalate4412
Buprenorphine-NaloxoneBuprenorphine Hcl/Naloxone Hcl43suppressed
DovatoDolutegravir Sodium/Lamivudine39suppressed
MirtazapineMirtazapine39suppressed
FamotidineFamotidine3811
Potassium ChloridePotassium Chloride3713
Warfarin SodiumWarfarin Sodium37suppressed
Duloxetine HclDuloxetine Hcl36suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen36suppressed
Amitriptyline HclAmitriptyline Hcl35suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate35suppressed
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters35suppressed
Metoprolol TartrateMetoprolol Tartrate32suppressed
Zolpidem TartrateZolpidem Tartrate3211
Montelukast SodiumMontelukast Sodium31suppressed
Alendronate SodiumAlendronate Sodium30suppressed
EplerenoneEplerenone30suppressed
Quetiapine FumarateQuetiapine Fumarate30suppressed
Bupropion XlBupropion Hcl29suppressed
ClopidogrelClopidogrel Bisulfate28suppressed
TivicayDolutegravir Sodium28suppressed
Fluoxetine HclFluoxetine Hcl27suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide27suppressed
AlprazolamAlprazolam26suppressed
Buspirone HclBuspirone Hcl26suppressed
TrulicityDulaglutide26suppressed
Alfuzosin Hcl ErAlfuzosin Hcl25suppressed
Ranolazine ErRanolazine25suppressed
RybelsusSemaglutide25suppressed
DescovyEmtricitabine/Tenofov Alafenam24suppressed
IsentressRaltegravir Potassium24suppressed
Morphine Sulfate ErMorphine Sulfate24suppressed
WegovySemaglutide24suppressed
Donepezil HclDonepezil Hcl23suppressed
ValacyclovirValacyclovir Hcl23suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen21suppressed
Doxepin HclDoxepin Hcl20suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol20suppressed
JulucaDolutegravir/Rilpivirine20suppressed
PaxlovidNirmatrelvir/Ritonavir2020
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid20suppressed
AmoxicillinAmoxicillin18suppressed
GlimepirideGlimepiride18suppressed
Labetalol HclLabetalol Hcl18suppressed
Ipratropium BromideIpratropium Bromide17suppressed
Pravastatin SodiumPravastatin Sodium17suppressed
TopiramateTopiramate17suppressed
AbacavirAbacavir Sulfate16suppressed
Lamivudine HbvLamivudine16suppressed
Doxazosin MesylateDoxazosin Mesylate15suppressed
EntrestoSacubitril/Valsartan15suppressed
LidocaineLidocaine15suppressed
Meclizine HclMeclizine Hcl15suppressed
PrednisonePrednisone15suppressed
ValsartanValsartan15suppressed
ColchicineColchicine14suppressed
RitonavirRitonavir14suppressed
BumetanideBumetanide13suppressed
ImiquimodImiquimod13suppressed
LivaloPitavastatin Calcium13suppressed
Paroxetine HclParoxetine Hcl13suppressed
BrilintaTicagrelor12suppressed
Bupropion Hcl SrBupropion Hcl12suppressed
Clonidine HclClonidine Hcl12suppressed
Klor-Con M20Potassium Chloride12suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog12suppressed
Memantine HclMemantine Hcl12suppressed
Ondansetron OdtOndansetron12suppressed
Oxybutynin Chloride ErOxybutynin Chloride12suppressed
PrezcobixDarunavir/Cobicistat12suppressed
SimvastatinSimvastatin12suppressed
SuboxoneBuprenorphine Hcl/Naloxone Hcl12suppressed
SymbicortBudesonide/Formoterol Fumarate12suppressed
TestosteroneTestosterone12suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic12suppressed
XareltoRivaroxaban12suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr11suppressed
DarunavirDarunavir11suppressed
Enalapril MaleateEnalapril Maleate11suppressed
JanuviaSitagliptin Phosphate11suppressed
TriumeqAbacavir/Dolutegravir/Lamivudi11suppressed

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 $17.25 · 1 records Amgen Inc. REPATHA
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