Healthcare provider profile · identity verified

Wei Feng, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism · SOUTH PASADENA, CA · NPI 1043277601

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 Wei Feng, MD received $2,224.32 in general payments during 2025 across 57 reported records.

Abbott Laboratories accounted for 22.8% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 14 associated products.

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

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 Fiasp as an associated drug or biological on 15 records involving 15 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Fiasp 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 274 claims for Ozempic 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 Rybelsus as an associated drug or biological on 161257 records involving 55409 distinct recipient NPIs. Public Medicare Part D data also shows 80 claims for Rybelsus by this doctor in 2024.

Radius Health, 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 Tymlos as an associated drug or biological on 17199 records involving 7328 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Tymlos by this doctor in 2024.

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

Payment overview · 2025

General Payments

$2,224.32

57 reported records · 11 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
Abbott Laboratories Unresolved — no canonical attribution shown $506.4322.8%102025
Amgen Inc. Unresolved — no canonical attribution shown $367.1216.5%162025
Chiesi USA, Inc. Unresolved — no canonical attribution shown $300.0013.5%12025
Novo Nordisk Inc Unresolved — no canonical attribution shown $251.0711.3%32025
Radius Health, Inc. Unresolved — no canonical attribution shown $171.457.7%122025
Insulet Corporation Unresolved — no canonical attribution shown $159.887.2%42025
Ascendis Pharma Endocrinology Inc Unresolved — no canonical attribution shown $125.005.6%12025
KYOWA KIRIN, INC. Unresolved — no canonical attribution shown $121.835.5%12025
BETA BIONICS, INC. Unresolved — no canonical attribution shown $94.884.3%22025
Madrigal Pharmaceuticals Unresolved — no canonical attribution shown $68.913.1%42025
Dexcom, Inc. Unresolved — no canonical attribution shown $57.752.6%32025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,924.3256
Honoraria$300.001

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
FREESTYLE LIBRE 3
Normalized: freestyle libre 3
Device Abbott Laboratories $506.43 10 2025
Source payment records
MYCAPSSA
Normalized: mycapssa
Drug Chiesi USA, Inc. $300.00 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $251.07 3 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $216.50 14 2025
Source payment records
Tymlos
Normalized: tymlos
Drug Radius Health, Inc. $171.45 12 2025
Source payment records
OMNIPOD
Normalized: omnipod
Device Insulet Corporation $159.88 4 2025
Source payment records
Repatha
Normalized: repatha
Biological Amgen Inc. $150.62 2 2025
Source payment records
Yorvipath
Normalized: yorvipath
Drug Ascendis Pharma Endocrinology Inc $125.00 1 2025
Source payment records
iLet Bionic Pancreas
Normalized: ilet bionic pancreas
Device BETA BIONICS, INC. $94.88 2 2025
Source payment records
iLet Insulin Infusion Kit Contact Detach
Normalized: ilet insulin infusion kit contact detach
Device BETA BIONICS, INC. $94.88 2 2025
Source payment records
iLet Insulin Infusion Kit Inset
Normalized: ilet insulin infusion kit inset
Device BETA BIONICS, INC. $94.88 2 2025
Source payment records
REZDIFFRA
Normalized: rezdiffra
Drug Madrigal Pharmaceuticals $68.91 4 2025
Source payment records
Dexcom G6 Transmitter
Normalized: dexcom g6 transmitter
Medical Supply Dexcom, Inc. $57.75 3 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $14.42 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
Ozempic
ozempic
2025 Ozempic 2024 274 exact normalized Medicare Part D
Rybelsus
rybelsus
2025 Rybelsus 2024 80 exact normalized Medicare Part D
Tymlos
tymlos
2025 Tymlos 2024 12
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
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Fiasp
open payments reported associated product
CMS Open Payments — General Payments
15 supporting records · 15 recipient NPIs · example record 1188262936
Fiasp · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
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
274 37
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Rybelsus
open payments reported associated product
CMS Open Payments — General Payments
161257 supporting records · 55409 recipient NPIs · example record 1188130076
Rybelsus · 2024
Exact normalized brand match · 1 Part D row
80 16
Radius Health, Inc.
Exact reporting entity; no affiliate inference
2025 Tymlos
open payments reported associated product
CMS Open Payments — General Payments
17199 supporting records · 7328 recipient NPIs · example record 1249501587
Tymlos · 2024
Exact normalized brand match · 1 Part D row
12 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
Levothyroxine SodiumLevothyroxine Sodium506111
JardianceEmpagliflozin32849
SynthroidLevothyroxine Sodium29064
OzempicSemaglutide27437
FarxigaDapagliflozin Propanediol26446
Metformin HclMetformin Hcl25957
Atorvastatin CalciumAtorvastatin Calcium24462
JanuviaSitagliptin Phosphate18733
Metformin Hcl ErMetformin Hcl17647
Alendronate SodiumAlendronate Sodium15536
Nano 2nd Gen Pen NeedlePen Needle, Diabetic13038
Rosuvastatin CalciumRosuvastatin Calcium12331
TradjentaLinagliptin11119
Losartan PotassiumLosartan Potassium9822
TrulicityDulaglutide9316
RepaglinideRepaglinide8321
RybelsusSemaglutide8016
KerendiaFinerenone7417
GlipizideGlipizide7218
Lantus SolostarInsulin Glargine,hum.Rec.Anlog6721
JanumetSitagliptin Phos/Metformin Hcl6615
TestosteroneTestosterone6111
HydrocortisoneHydrocortisone60suppressed
MethimazoleMethimazole5813
MounjaroTirzepatide5811
Raloxifene HclRaloxifene Hcl5814
Amlodipine BesylateAmlodipine Besylate5715
GlimepirideGlimepiride5616
LisinoprilLisinopril5613
TeriparatideTeriparatide54suppressed
Liothyronine SodiumLiothyronine Sodium5013
VascepaIcosapent Ethyl5011
CalcitriolCalcitriol4412
Humalog Kwikpen U-100Insulin Lispro4320
Janumet XrSitagliptin Phos/Metformin Hcl40suppressed
Gvoke Hypopen 2-PackGlucagon3831
EzetimibeEzetimibe3711
FenofibrateFenofibrate Nanocrystallized36suppressed
Icosapent EthylIcosapent Ethyl36suppressed
Novolog FlexpenInsulin Aspart3519
Potassium ChloridePotassium Chloride35suppressed
DexamethasoneDexamethasone3323
MiglitolMiglitol33suppressed
Potassium Citrate ErPotassium Citrate32suppressed
AcarboseAcarbose30suppressed
Armour ThyroidThyroid,pork28suppressed
Fiasp FlextouchInsulin Aspart (Niacinamide)27suppressed
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters27suppressed
Vitamin D2Ergocalciferol (Vitamin D2)27suppressed
AfrezzaInsulin Regular, Human25suppressed
Humalog Kwikpen U-200Insulin Lispro25suppressed
HydrochlorothiazideHydrochlorothiazide25suppressed
SimvastatinSimvastatin25suppressed
CyclosetBromocriptine Mesylate24suppressed
Droplet Pen NeedlePen Needle, Diabetic24suppressed
Pioglitazone HclPioglitazone Hcl24suppressed
Tresiba Flextouch U-100Insulin Degludec24suppressed
Insulin Lispro Kwikpen U-100Insulin Lispro22suppressed
Risedronate SodiumRisedronate Sodium21suppressed
SpironolactoneSpironolactone21suppressed
Ultra-Fine Nano Pen NeedlePen Needle, Diabetic21suppressed
ValsartanValsartan20suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid18suppressed
ForteoTeriparatide16suppressed
LantusInsulin Glargine,hum.Rec.Anlog16suppressed
Praluent PenAlirocumab16suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic16suppressed
GabapentinGabapentin15suppressed
Ibandronate SodiumIbandronate Sodium15suppressed
NateglinideNateglinide15suppressed
NexlizetBempedoic Acid/Ezetimibe15suppressed
Ondansetron OdtOndansetron15suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog15suppressed
BaclofenBaclofen14suppressed
Fenofibric AcidFenofibric Acid (Choline)14suppressed
Fludrocortisone AcetateFludrocortisone Acetate14suppressed
Novolog Mix 70-30 FlexpenInsulin Aspart Prot/Insuln Asp14suppressed
Olmesartan MedoxomilOlmesartan Medoxomil14suppressed
Alcohol Prep PadsAlcohol Antiseptic Pads13suppressed
HumalogInsulin Lispro13suppressed
Pravastatin SodiumPravastatin Sodium13suppressed
Amlodipine-ValsartanAmlodipine Besylate/Valsartan12suppressed
Benazepril HclBenazepril Hcl12suppressed
Repatha SureclickEvolocumab12suppressed
TymlosAbaloparatide12suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog11suppressed
FiaspInsulin Aspart (Niacinamide)11suppressed

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 $2,224.32 · 57 records Abbott Laboratories Dexcom G6 Transmitter, EVENITY, FREESTYLE LIBRE 3, MYCAPSSA, OMNIPOD, Ozempic, REZDIFFRA, Repatha, Rybelsus, Tymlos, Yorvipath, iLet Bionic Pancreas, iLet Insulin Infusion Kit Contact Detach, iLet Insulin Infusion Kit Inset 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