Healthcare provider profile · identity verified

David Smith Oyer, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism · CHICAGO, IL · NPI 1134226467

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 David Smith Oyer, M.D. received $567.06 in general payments during 2025 across 23 reported records.

Novo Nordisk Inc accounted for 46.8% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 13 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Jardiance, Kerendia, Ozempic.

Bayer Healthcare Pharmaceuticals Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Kerendia as an associated drug or biological on 138674 records involving 48458 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Kerendia by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 110 claims for Jardiance by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 79 claims for Mounjaro by this doctor in 2024.

Novo Nordisk Inc reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 231 claims for Ozempic by this doctor in 2024.

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

Payment overview · 2025

General Payments

$567.06

23 reported records · 9 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
Novo Nordisk Inc Unresolved — no canonical attribution shown $265.2546.8%112025
Exact Sciences Corporation Unresolved — no canonical attribution shown $55.029.7%22025
Insulet Corporation Unresolved — no canonical attribution shown $47.048.3%22025
Mannkind Corporation Unresolved — no canonical attribution shown $42.507.5%12025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $39.867.0%22025
Amgen Inc. Unresolved — no canonical attribution shown $39.647.0%22025
Alexion Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $32.825.8%12025
Xeris Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $24.934.4%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $20.003.5%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$427.7519
Education$139.314

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
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $103.05 7 2025
Source payment records
Omnipod
Normalized: omnipod
Device Insulet Corporation $47.04 2 2025
Source payment records
AFREZZA
Normalized: afrezza
Drug Mannkind Corporation $42.50 1 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $39.86 2 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $39.64 2 2025
Source payment records
STRENSIQ
Normalized: strensiq
Biological Alexion Pharmaceuticals, Inc. $32.82 1 2025
Source payment records
The Cologuard Plus Collection Kit
Normalized: the cologuard plus collection kit
Device Exact Sciences Corporation $30.83 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $27.33 2 2025
Source payment records
GVOKE HYPOPEN
Normalized: gvoke hypopen
Drug Xeris Pharmaceuticals, Inc. $24.93 1 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $24.19 1 2025
Source payment records
OTEZLA
Normalized: otezla
Drug Amgen Inc. $21.69 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $20.57 2 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Lilly USA, LLC $20.00 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

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
JARDIANCE
jardiance
2025 Jardiance 2024 110 exact normalized Medicare Part D
Kerendia
kerendia
2025 Kerendia 2024 21
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 231 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
Bayer Healthcare Pharmaceuticals Inc.
Exact reporting entity; no affiliate inference
2025 Kerendia
open payments reported associated product
CMS Open Payments — General Payments
138674 supporting records · 48458 recipient NPIs · example record 1225434663
Kerendia · 2024
Exact normalized brand match · 1 Part D row
21 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
47708 supporting records · 23833 recipient NPIs · example record 1186464557
Jardiance · 2024
Exact normalized brand match · 1 Part D row
110 28
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
79 14
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Ozempic
open payments reported associated product
CMS Open Payments — General Payments
261625 supporting records · 77793 recipient NPIs · example record 1188130076
Ozempic · 2024
Exact normalized brand match · 1 Part D row
231 65

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
Levothyroxine SodiumLevothyroxine Sodium32776
Atorvastatin CalciumAtorvastatin Calcium29181
Rosuvastatin CalciumRosuvastatin Calcium26682
OzempicSemaglutide23165
Metoprolol SuccinateMetoprolol Succinate22551
EzetimibeEzetimibe19165
Losartan PotassiumLosartan Potassium18453
Amlodipine BesylateAmlodipine Besylate15639
JardianceEmpagliflozin11028
SynthroidLevothyroxine Sodium9020
IrbesartanIrbesartan8722
Tresiba Flextouch U-100Insulin Degludec8226
MounjaroTirzepatide7914
Tamsulosin HclTamsulosin Hcl7816
EliquisApixaban7318
Pravastatin SodiumPravastatin Sodium73suppressed
SimvastatinSimvastatin6921
EplerenoneEplerenone6718
XareltoRivaroxaban64suppressed
Olmesartan MedoxomilOlmesartan Medoxomil63suppressed
Alendronate SodiumAlendronate Sodium6221
Acetaminophen-CodeineAcetaminophen With Codeine6112
Nebivolol HclNebivolol Hcl6119
LorazepamLorazepam6014
Zolpidem TartrateZolpidem Tartrate5918
Metformin Hcl ErMetformin Hcl5517
AzithromycinAzithromycin5440
LisinoprilLisinopril5114
Pantoprazole SodiumPantoprazole Sodium5016
AlprazolamAlprazolam4913
Nano 2nd Gen Pen NeedlePen Needle, Diabetic4923
Tresiba Flextouch U-200Insulin Degludec4917
HydrochlorothiazideHydrochlorothiazide4715
DofetilideDofetilide46suppressed
GabapentinGabapentin4314
Terazosin HclTerazosin Hcl43suppressed
CelecoxibCelecoxib4215
ValacyclovirValacyclovir Hcl4216
Escitalopram OxalateEscitalopram Oxalate4011
FurosemideFurosemide4011
Metformin HclMetformin Hcl4011
DiazepamDiazepam3812
OmeprazoleOmeprazole3811
Esomeprazole MagnesiumEsomeprazole Magnesium3713
GlimepirideGlimepiride3712
AllopurinolAllopurinol36suppressed
ValsartanValsartan3611
ChlorthalidoneChlorthalidone35suppressed
RamiprilRamipril33suppressed
CarvedilolCarvedilol32suppressed
Humalog Kwikpen U-100Insulin Lispro31suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim3115
TemazepamTemazepam3014
ColchicineColchicine2914
Duloxetine HclDuloxetine Hcl29suppressed
CephalexinCephalexin2716
Donepezil HclDonepezil Hcl25suppressed
FamotidineFamotidine25suppressed
LinzessLinaclotide25suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2414
ClonazepamClonazepam24suppressed
Fludrocortisone AcetateFludrocortisone Acetate24suppressed
HydrocortisoneHydrocortisone24suppressed
Montelukast SodiumMontelukast Sodium24suppressed
Potassium ChloridePotassium Chloride24suppressed
SpironolactoneSpironolactone24suppressed
HumalogInsulin Lispro23suppressed
Ondansetron OdtOndansetron2311
Pioglitazone HclPioglitazone Hcl23suppressed
Bupropion XlBupropion Hcl22suppressed
FarxigaDapagliflozin Propanediol22suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst2216
PrednisonePrednisone22suppressed
Repatha SureclickEvolocumab22suppressed
Albuterol Sulfate HfaAlbuterol Sulfate21suppressed
KerendiaFinerenone21suppressed
MeloxicamMeloxicam21suppressed
Sertraline HclSertraline Hcl21suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine20suppressed
Sildenafil CitrateSildenafil Citrate20suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine19suppressed
Fiasp FlextouchInsulin Aspart (Niacinamide)19suppressed
Omnipod 5 Dexg7g6 Pods (Gen 5)Insulin Pump Cart,auto,bt,g6/719suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid19suppressed
Doxycycline HyclateDoxycycline Hyclate1711
LansoprazoleLansoprazole17suppressed
Tramadol HclTramadol Hcl17suppressed
FluconazoleFluconazole1611
Ipratropium BromideIpratropium Bromide16suppressed
PaxlovidNirmatrelvir/Ritonavir1615
Citalopram HbrCitalopram Hydrobromide15suppressed
Gentamicin SulfateGentamicin Sulfate1511
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic15suppressed
ClopidogrelClopidogrel Bisulfate14suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl14suppressed
FenofibrateFenofibrate Nanocrystallized14suppressed
Humalog Kwikpen U-200Insulin Lispro14suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen14suppressed
TorsemideTorsemide14suppressed
Breo ElliptaFluticasone/Vilanterol13suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine13suppressed
Fluoxetine HclFluoxetine Hcl13suppressed
Oxybutynin Chloride ErOxybutynin Chloride13suppressed
Buspirone HclBuspirone Hcl12suppressed
Gvoke Hypopen 2-PackGlucagon12suppressed
InvokanaCanagliflozin12suppressed
SumatriptanSumatriptan12suppressed
Trazodone HclTrazodone Hcl12suppressed
Dexlansoprazole DrDexlansoprazole11suppressed
Doxazosin MesylateDoxazosin Mesylate11suppressed
MethylprednisoloneMethylprednisolone11suppressed
PremarinEstrogens, Conjugated11suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter11suppressed
Zolpidem Tartrate ErZolpidem Tartrate11suppressed

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 $567.06 · 23 records Novo Nordisk Inc AFREZZA, Cologuard Collection Kit, GVOKE HYPOPEN, JARDIANCE, Kerendia, OTEZLA, Omnipod, Ozempic, REPATHA, Rybelsus, STRENSIQ, The Cologuard Plus Collection Kit, Wegovy 4
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