Healthcare provider profile · identity verified

Willie C Teo Ong, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism · BROWNSVILLE, TX · NPI 1346247939

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 Willie C Teo Ong, M.D. received $859.39 in general payments during 2025 across 13 reported records.

Corcept Therapeutics accounted for 27.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 8 associated products.

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

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 392 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 242 claims for Mounjaro 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 TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Trulicity by this doctor in 2024.

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

Payment overview · 2025

General Payments

$859.39

13 reported records · 7 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
Corcept Therapeutics Unresolved — no canonical attribution shown $234.3527.3%42025
Lilly USA, LLC Unresolved — no canonical attribution shown $200.2923.3%22025
Dexcom, Inc. Unresolved — no canonical attribution shown $141.4216.5%12025
Abbott Laboratories Unresolved — no canonical attribution shown $137.1516.0%12025
Sequel Med Tech, LLC Unresolved — no canonical attribution shown $81.839.5%32025
Ascendis Pharma Endocrinology Inc Unresolved — no canonical attribution shown $35.544.1%12025
Smith+Nephew, Inc. Unresolved — no canonical attribution shown $28.813.4%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$859.3913

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
Korlym
Normalized: korlym
Drug Corcept Therapeutics $234.35 4 2025
Source payment records
Dexcom G6 Transmitter
Normalized: dexcom g6 transmitter
Medical Supply Dexcom, Inc. $141.42 1 2025
Source payment records
FREESTYLE LIBRE
Normalized: freestyle libre
Device Abbott Laboratories $137.15 1 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $115.18 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $85.11 1 2025
Source payment records
TWIIST
Normalized: twiist
Device Sequel Med Tech, LLC $81.83 3 2025
Source payment records
Yorvipath
Normalized: yorvipath
Drug Ascendis Pharma Endocrinology Inc $35.54 1 2025
Source payment records
Pico 14
Normalized: pico 14
Device Smith+Nephew, Inc. $28.81 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
MOUNJARO
mounjaro
2025 Mounjaro 2024 242 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
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
392 131
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
242 48
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 TRULICITY
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 57 recipient NPIs · example record 1186464601
Trulicity · 2024
Exact normalized brand match · 1 Part D row
24 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
OzempicSemaglutide751155
Levothyroxine SodiumLevothyroxine Sodium560182
JardianceEmpagliflozin392131
Humalog Mix 75-25 KwikpenInsulin Lispro Protamin/Lispro355116
FarxigaDapagliflozin Propanediol342105
Metformin HclMetformin Hcl326121
MounjaroTirzepatide24248
Novolog Mix 70-30 FlexpenInsulin Aspart Prot/Insuln Asp22779
Atorvastatin CalciumAtorvastatin Calcium20884
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic12666
Nano 2nd Gen Pen NeedlePen Needle, Diabetic12250
Rosuvastatin CalciumRosuvastatin Calcium11839
Tresiba Flextouch U-100Insulin Degludec10129
Insulin Lispro Protamine MixInsulin Lispro Protamin/Lispro8532
Losartan PotassiumLosartan Potassium7830
SynthroidLevothyroxine Sodium6920
LisinoprilLisinopril5822
Metformin Hcl ErMetformin Hcl5821
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog5119
JanuviaSitagliptin Phosphate4713
Tresiba Flextouch U-200Insulin Degludec4618
Lantus SolostarInsulin Glargine,hum.Rec.Anlog4318
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide4013
Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog4012
CabergolineCabergoline37suppressed
Humalog Mix 75-25Insulin Lispro Protamin/Lispro3715
HydrocortisoneHydrocortisone37suppressed
Novolog Mix 70-30Insulin Aspart Prot/Insuln Asp34suppressed
SimvastatinSimvastatin3411
JanumetSitagliptin Phos/Metformin Hcl33suppressed
Ulticare Pen NeedlePen Needle, Diabetic3323
Comfort Ez Pen NeedlePen Needle, Diabetic3113
Insulin Aspart Prot Mix 70-30Insulin Aspart Prot/Insuln Asp2922
Novolog FlexpenInsulin Aspart29suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide2811
Novolin 70-30 FlexpenInsulin Nph Hum/Reg Insulin Hm2811
Ultra-Fine Short Pen NeedlePen Needle, Diabetic2714
Amlodipine BesylateAmlodipine Besylate25suppressed
Incontrol Pen NeedlePen Needle, Diabetic2413
TradjentaLinagliptin24suppressed
TrulicityDulaglutide24suppressed
HydrochlorothiazideHydrochlorothiazide23suppressed
Insulin Lispro Kwikpen U-100Insulin Lispro2313
MethimazoleMethimazole2311
Pen NeedlesPen Needle, Diabetic2213
EzetimibeEzetimibe20suppressed
GlimepirideGlimepiride20suppressed
Pravastatin SodiumPravastatin Sodium20suppressed
Ultra-Fine Nano Pen NeedlePen Needle, Diabetic19suppressed
Alcohol Prep PadsAlcohol Antiseptic Pads18suppressed
Humalog Kwikpen U-100Insulin Lispro18suppressed
PrednisonePrednisone18suppressed
RybelsusSemaglutide17suppressed
Olmesartan MedoxomilOlmesartan Medoxomil16suppressed
Omnipod 5 Dexg7g6 Pods (Gen 5)Insulin Pump Cart,auto,bt,g6/716suppressed
Pen NeedlePen Needle, Diabetic16suppressed
VascepaIcosapent Ethyl16suppressed
Veo Insulin SyringeSyringe And Needle,insulin,1ml16suppressed
DapagliflozinDapagliflozin Propanediol1514
FluconazoleFluconazole15suppressed
GlipizideGlipizide14suppressed
Glipizide-MetforminGlipizide/Metformin Hcl14suppressed
Levemir FlexpenInsulin Detemir14suppressed
Single Use SwabAlcohol Antiseptic Pads14suppressed
SynjardyEmpagliflozin/Metformin Hcl14suppressed
Testosterone CypionateTestosterone Cypionate14suppressed
Alcohol PadsAlcohol Antiseptic Pads13suppressed
MycapssaOctreotide Acetate13suppressed
FenofibrateFenofibrate12suppressed
GabapentinGabapentin12suppressed
Insulin LisproInsulin Lispro12suppressed
ValsartanValsartan12suppressed
CarvedilolCarvedilol11suppressed
Fiasp FlextouchInsulin Aspart (Niacinamide)11suppressed
HumalogInsulin Lispro11suppressed
Humulin 70-30Insulin Nph Hum/Reg Insulin Hm11suppressed
Insulin SyringeSyringe And Needle,insulin,1ml11suppressed

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 $859.39 · 13 records Corcept Therapeutics Dexcom G6 Transmitter, FREESTYLE LIBRE, Korlym, MOUNJARO, Pico 14, TWIIST, Yorvipath, ZEPBOUND 3
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