Healthcare provider profile · identity verified

Anderson Eng, D.O.

Allopathic & Osteopathic Physicians|Internal Medicine · SAN FRANCISCO, CA · NPI 1831528363

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 Anderson Eng, D.O. received $387.25 in general payments during 2025 across 14 reported records.

Insmed, Inc. accounted for 18.2% 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, Prolia.

Amgen 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 PROLIA as an associated drug or biological on 20867 records involving 11744 distinct recipient NPIs. Public Medicare Part D data also shows 22 claims for Prolia by this doctor in 2024.

Boehringer Ingelheim 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 JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 92 claims for Jardiance by this doctor in 2024.

Gilead Sciences, 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 Vemlidy as an associated drug or biological on 782 records involving 554 distinct recipient NPIs. Public Medicare Part D data also shows 26 claims for Vemlidy 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 92 claims for Jardiance by this doctor in 2024.

PFIZER 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 ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 85 claims for Eliquis by this doctor in 2024.

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

Payment overview · 2025

General Payments

$387.25

14 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
Insmed, Inc. Unresolved — no canonical attribution shown $70.6018.2%12025
Gilead Sciences, Inc. Unresolved — no canonical attribution shown $57.4714.8%22025
Lilly USA, LLC Unresolved — no canonical attribution shown $56.6014.6%22025
Novo Nordisk Inc Unresolved — no canonical attribution shown $35.569.2%22025
Amgen Inc. Unresolved — no canonical attribution shown $30.537.9%12025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $30.237.8%12025
Agios Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $29.097.5%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $22.305.8%12025
SCILEX PHARMACEUTICALS INC. Unresolved — no canonical attribution shown $20.735.3%12025
PFIZER INC. Unresolved — no canonical attribution shown $17.164.4%12025
ModernaTX, Inc. Unresolved — no canonical attribution shown $16.984.4%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$387.2514

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
Arikayce
Normalized: arikayce
Drug Insmed, Inc. $70.60 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $56.60 2 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $56.60 2 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $30.53 1 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $30.53 1 2025
Source payment records
CAPVAXIVE
Normalized: capvaxive
Biological Merck Sharp & Dohme LLC $30.23 1 2025
Source payment records
GARDASIL 9
Normalized: gardasil 9
Biological Merck Sharp & Dohme LLC $30.23 1 2025
Source payment records
M-M-R II
Normalized: m m r ii
Biological Merck Sharp & Dohme LLC $30.23 1 2025
Source payment records
PYRUKYND
Normalized: pyrukynd
Drug Agios Pharmaceuticals, Inc. $29.09 1 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $22.30 1 2025
Source payment records
ZTLido
Normalized: ztlido
Drug SCILEX PHARMACEUTICALS INC. $20.73 1 2025
Source payment records
VYNDAQEL
Normalized: vyndaqel
Drug PFIZER INC. $17.16 1 2025
Source payment records
mResvia
Normalized: mresvia
Drug ModernaTX, Inc. $16.98 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 92 exact normalized Medicare Part D
PROLIA
prolia
2025 Prolia 2024 22 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
Amgen Inc.
Exact reporting entity; no affiliate inference
2025 PROLIA
open payments reported associated product
CMS Open Payments — General Payments
20867 supporting records · 11744 recipient NPIs · example record 1226874448
Prolia · 2024
Exact normalized brand match · 1 Part D row
22 16
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
92 27
Gilead Sciences, Inc.
Exact reporting entity; no affiliate inference
2025 Vemlidy
open payments reported associated product
CMS Open Payments — General Payments
782 supporting records · 554 recipient NPIs · example record 1234350906
Vemlidy · 2024
Exact normalized brand match · 1 Part D row
26 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
92 27
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
85 20

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 Calcium574182
Losartan PotassiumLosartan Potassium517151
Amlodipine BesylateAmlodipine Besylate442134
SimvastatinSimvastatin31491
Metoprolol SuccinateMetoprolol Succinate25474
Metformin HclMetformin Hcl22569
FarxigaDapagliflozin Propanediol18840
Tamsulosin HclTamsulosin Hcl16552
LisinoprilLisinopril15247
FamotidineFamotidine13364
Alendronate SodiumAlendronate Sodium12139
AllopurinolAllopurinol11937
Levothyroxine SodiumLevothyroxine Sodium9827
HydrochlorothiazideHydrochlorothiazide9732
FinasterideFinasteride9530
OmeprazoleOmeprazole9441
JardianceEmpagliflozin9227
EliquisApixaban8520
Rosuvastatin CalciumRosuvastatin Calcium8431
Triamcinolone AcetonideTriamcinolone Acetonide8359
FurosemideFurosemide8025
Metformin Hcl ErMetformin Hcl8025
TradjentaLinagliptin7622
EzetimibeEzetimibe7022
Pantoprazole SodiumPantoprazole Sodium6827
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide6620
Fluticasone PropionateFluticasone Propionate5829
Pravastatin SodiumPravastatin Sodium5314
AtenololAtenolol5214
Glipizide ErGlipizide4714
Nifedipine ErNifedipine42suppressed
Benazepril HclBenazepril Hcl40suppressed
LovastatinLovastatin3911
Montelukast SodiumMontelukast Sodium3915
Azelastine HclAzelastine Hcl3816
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip3817
Trazodone HclTrazodone Hcl3716
HydrocortisoneHydrocortisone3615
MeloxicamMeloxicam3621
ClopidogrelClopidogrel Bisulfate35suppressed
Diclofenac SodiumDiclofenac Sodium3523
Betamethasone DipropionateBetamethasone Dipropionate3418
Albuterol Sulfate HfaAlbuterol Sulfate3111
Potassium ChloridePotassium Chloride31suppressed
GabapentinGabapentin3012
LactuloseLactulose2911
VascepaIcosapent Ethyl29suppressed
Metoprolol TartrateMetoprolol Tartrate28suppressed
KetoconazoleKetoconazole2715
Ciprofloxacin HclCiprofloxacin Hcl2617
FenofibrateFenofibrate Nanocrystallized2612
IbuprofenIbuprofen2622
VemlidyTenofovir Alafenamide26suppressed
AzithromycinAzithromycin2524
Memantine HclMemantine Hcl25suppressed
Meclizine HclMeclizine Hcl2420
TelmisartanTelmisartan24suppressed
GlipizideGlipizide23suppressed
MirtazapineMirtazapine23suppressed
ProliaDenosumab2216
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters20suppressed
Clobetasol PropionateClobetasol Propionate19suppressed
Enalapril MaleateEnalapril Maleate19suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride19suppressed
Oxybutynin Chloride ErOxybutynin Chloride19suppressed
Pioglitazone HclPioglitazone Hcl19suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic18suppressed
Terazosin HclTerazosin Hcl18suppressed
Chlorhexidine GluconateChlorhexidine Gluconate17suppressed
ColchicineColchicine17suppressed
Donepezil HclDonepezil Hcl17suppressed
Doxazosin MesylateDoxazosin Mesylate17suppressed
Hydroxyzine HclHydroxyzine Hcl1712
NaproxenNaproxen17suppressed
Zolpidem TartrateZolpidem Tartrate17suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1614
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen16suppressed
LinzessLinaclotide16suppressed
CarvedilolCarvedilol15suppressed
ClonazepamClonazepam15suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide15suppressed
XareltoRivaroxaban15suppressed
Betamethasone Diprop AugmentedBetamethasone/Propylene Glyc14suppressed
Dicyclomine HclDicyclomine Hcl14suppressed
FenofibrateFenofibrate14suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate14suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide14suppressed
CiclopiroxCiclopirox13suppressed
Combivent RespimatIpratropium/Albuterol Sulfate13suppressed
FluocinonideFluocinonide13suppressed
LorazepamLorazepam13suppressed
SucralfateSucralfate13suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog12suppressed
BumetanideBumetanide12suppressed
Escitalopram OxalateEscitalopram Oxalate12suppressed
GemfibrozilGemfibrozil12suppressed
PrednisonePrednisone12suppressed
Quetiapine FumarateQuetiapine Fumarate12suppressed
Sodium Polystyrene SulfonateSodium Polystyrene Sulfonate12suppressed
Telmisartan-HydrochlorothiazidTelmisartan/Hydrochlorothiazid12suppressed
TrintellixVortioxetine Hydrobromide12suppressed
FebuxostatFebuxostat11suppressed
LansoprazoleLansoprazole11suppressed
Olmesartan MedoxomilOlmesartan Medoxomil11suppressed
Stiolto RespimatTiotropium Br/Olodaterol Hcl11suppressed

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 $387.25 · 14 records Insmed, Inc. Arikayce, CAPVAXIVE, EVENITY, GARDASIL 9, JARDIANCE, M-M-R II, MOUNJARO, PROLIA, PYRUKYND, VYNDAQEL, ZEPBOUND, ZTLido, mResvia 5
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