Healthcare provider profile · identity verified

Charles C Giger, MD

Allopathic & Osteopathic Physicians|Internal Medicine · ELMHURST, IL · NPI 1275558496

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 Charles C Giger, MD received $228.31 in general payments during 2025 across 3 reported records.

AstraZeneca Pharmaceuticals LP accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 2 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Farxiga.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 34 claims for Farxiga by this doctor in 2024.

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

Payment overview · 2025

General Payments

$228.31

3 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
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $228.31100.0%32025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$228.313

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
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $118.51 1 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $109.80 2 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

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
FARXIGA
farxiga
2025 Farxiga 2024 34
Beneficiary count suppressed
exact normalized Medicare Part D

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.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 FARXIGA
open payments reported associated product
CMS Open Payments — General Payments
106133 supporting records · 42906 recipient NPIs · example record 1206131362
Farxiga · 2024
Exact normalized brand match · 1 Part D row
34 suppressed by CMS

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 Calcium764217
Levothyroxine SodiumLevothyroxine Sodium510118
Amlodipine BesylateAmlodipine Besylate472135
LisinoprilLisinopril36996
Metformin HclMetformin Hcl30683
Rosuvastatin CalciumRosuvastatin Calcium23970
Losartan PotassiumLosartan Potassium22859
Pantoprazole SodiumPantoprazole Sodium22561
Metoprolol SuccinateMetoprolol Succinate21960
HydrochlorothiazideHydrochlorothiazide19446
IrbesartanIrbesartan19049
SimvastatinSimvastatin16043
Escitalopram OxalateEscitalopram Oxalate15548
Pioglitazone HclPioglitazone Hcl14538
FurosemideFurosemide13839
AllopurinolAllopurinol13438
Potassium ChloridePotassium Chloride13337
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid13132
ClopidogrelClopidogrel Bisulfate12228
OmeprazoleOmeprazole11838
Donepezil HclDonepezil Hcl10631
Pravastatin SodiumPravastatin Sodium9930
AzithromycinAzithromycin9481
Metoprolol TartrateMetoprolol Tartrate9426
MirtazapineMirtazapine9319
Tamsulosin HclTamsulosin Hcl8827
AtenololAtenolol7422
JardianceEmpagliflozin6117
MeloxicamMeloxicam6128
Montelukast SodiumMontelukast Sodium6017
OzempicSemaglutide60suppressed
Sertraline HclSertraline Hcl6020
GabapentinGabapentin5114
Zolpidem TartrateZolpidem Tartrate5018
AlprazolamAlprazolam4913
Tramadol HclTramadol Hcl4917
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav4834
FinasterideFinasteride4814
Fluticasone PropionateFluticasone Propionate44suppressed
Duloxetine HclDuloxetine Hcl4111
Memantine HclMemantine Hcl41suppressed
Hydralazine HclHydralazine Hcl4013
PrednisonePrednisone4028
Venlafaxine Hcl ErVenlafaxine Hcl38suppressed
EzetimibeEzetimibe3716
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide37suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst3626
GlipizideGlipizide3511
Albuterol Sulfate HfaAlbuterol Sulfate3415
FarxigaDapagliflozin Propanediol34suppressed
SpironolactoneSpironolactone3412
Terazosin HclTerazosin Hcl33suppressed
Bisoprolol-HydrochlorothiazideBisoprolol/Hydrochlorothiazide31suppressed
LovastatinLovastatin31suppressed
Citalopram HbrCitalopram Hydrobromide29suppressed
Alendronate SodiumAlendronate Sodium27suppressed
Buspirone HclBuspirone Hcl27suppressed
Bydureon BciseExenatide Microspheres27suppressed
Quetiapine FumarateQuetiapine Fumarate27suppressed
Divalproex SodiumDivalproex Sodium26suppressed
Kapspargo SprinkleMetoprolol Succinate26suppressed
XareltoRivaroxaban26suppressed
AmoxicillinAmoxicillin2520
PaxlovidNirmatrelvir/Ritonavir2525
Enalapril MaleateEnalapril Maleate24suppressed
CarvedilolCarvedilol23suppressed
ClarithromycinClarithromycin2320
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide23suppressed
Ropinirole HclRopinirole Hcl23suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl22suppressed
GlimepirideGlimepiride22suppressed
Meclizine HclMeclizine Hcl2213
Paroxetine HclParoxetine Hcl21suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium20suppressed
FamotidineFamotidine2012
Fluoxetine HclFluoxetine Hcl20suppressed
KetoconazoleKetoconazole19suppressed
MethimazoleMethimazole19suppressed
Nifedipine ErNifedipine19suppressed
SynthroidLevothyroxine Sodium19suppressed
Carbidopa-LevodopaCarbidopa/Levodopa17suppressed
Labetalol HclLabetalol Hcl17suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog17suppressed
Metformin Hcl ErMetformin Hcl17suppressed
Trazodone HclTrazodone Hcl17suppressed
FluocinonideFluocinonide1612
Klor-Con M10Potassium Chloride16suppressed
MethylprednisoloneMethylprednisolone1614
Warfarin SodiumWarfarin Sodium16suppressed
EliquisApixaban15suppressed
ValtrexValacyclovir Hcl15suppressed
Amitriptyline HclAmitriptyline Hcl14suppressed
Cartia XtDiltiazem Hcl14suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen14suppressed
Memantine Hcl ErMemantine Hcl14suppressed
Advair HfaFluticasone Propion/Salmeterol13suppressed
Propranolol Hcl ErPropranolol Hcl13suppressed
Verapamil ErVerapamil Hcl13suppressed
Benazepril HclBenazepril Hcl12suppressed
IndapamideIndapamide12suppressed
Metoclopramide HclMetoclopramide Hcl12suppressed
Zolpidem Tartrate ErZolpidem Tartrate12suppressed
BumetanideBumetanide11suppressed
Candesartan CilexetilCandesartan Cilexetil11suppressed
CefadroxilCefadroxil1111
DutasterideDutasteride11suppressed
FenofibrateFenofibrate Nanocrystallized11suppressed
Galantamine ErGalantamine Hbr11suppressed
LansoprazoleLansoprazole11suppressed

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 $228.31 · 3 records AstraZeneca Pharmaceuticals LP BREZTRI, FARXIGA 1
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