Healthcare provider profile · identity verified

Catherine Yi, M.D.

Internal Medicine · CHICAGO, IL · NPI 1437184082

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 Calcium527153
Amlodipine BesylateAmlodipine Besylate419121
Losartan PotassiumLosartan Potassium414114
Levothyroxine SodiumLevothyroxine Sodium32060
HydrochlorothiazideHydrochlorothiazide22969
Metoprolol SuccinateMetoprolol Succinate21562
OzempicSemaglutide13724
Metformin Hcl ErMetformin Hcl12338
OmeprazoleOmeprazole12141
Rosuvastatin CalciumRosuvastatin Calcium10734
LisinoprilLisinopril10430
Potassium ChloridePotassium Chloride10334
Pantoprazole SodiumPantoprazole Sodium8021
GabapentinGabapentin7828
Metformin HclMetformin Hcl7319
Alendronate SodiumAlendronate Sodium7223
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid5612
JardianceEmpagliflozin5412
MeloxicamMeloxicam5016
CarvedilolCarvedilol4413
EliquisApixaban4411
Lantus SolostarInsulin Glargine,hum.Rec.Anlog44suppressed
Sertraline HclSertraline Hcl4315
SynthroidLevothyroxine Sodium40suppressed
TrulicityDulaglutide38suppressed
Escitalopram OxalateEscitalopram Oxalate3713
Albuterol Sulfate HfaAlbuterol Sulfate2915
ValacyclovirValacyclovir Hcl2813
ClopidogrelClopidogrel Bisulfate27suppressed
MounjaroTirzepatide27suppressed
SimvastatinSimvastatin27suppressed
AllopurinolAllopurinol25suppressed
Duloxetine HclDuloxetine Hcl25suppressed
FamotidineFamotidine25suppressed
Tamsulosin HclTamsulosin Hcl25suppressed
Citalopram HbrCitalopram Hydrobromide24suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide24suppressed
Pravastatin SodiumPravastatin Sodium23suppressed
ValsartanValsartan23suppressed
Klor-Con M10Potassium Chloride22suppressed
Fluoxetine HclFluoxetine Hcl20suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide19suppressed
XareltoRivaroxaban19suppressed
SpironolactoneSpironolactone18suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl16suppressed
Fluticasone PropionateFluticasone Propionate16suppressed
Hydralazine HclHydralazine Hcl16suppressed
Nifedipine ErNifedipine16suppressed
Olmesartan MedoxomilOlmesartan Medoxomil15suppressed
Alcohol PadsAlcohol Antiseptic Pads14suppressed
Benazepril HclBenazepril Hcl14suppressed
CefdinirCefdinir14suppressed
Humalog Kwikpen U-100Insulin Lispro14suppressed
PregabalinPregabalin14suppressed
Tresiba Flextouch U-100Insulin Degludec14suppressed
ChlorthalidoneChlorthalidone13suppressed
LantusInsulin Glargine,hum.Rec.Anlog13suppressed
MyrbetriqMirabegron13suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic13suppressed
Arnuity ElliptaFluticasone Furoate12suppressed
Montelukast SodiumMontelukast Sodium12suppressed
PaxlovidNirmatrelvir/Ritonavir1212
Ventolin HfaAlbuterol Sulfate12suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1111
AtenololAtenolol11suppressed
BaclofenBaclofen11suppressed
FurosemideFurosemide11suppressed
JanuviaSitagliptin Phosphate11suppressed
LevoxylLevothyroxine Sodium11suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst11suppressed
RamiprilRamipril11suppressed
Sodium ChlorideSodium Chloride Irrig Solution11suppressed

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