Healthcare provider profile · identity verified

Woojin Joo, MD

Allopathic & Osteopathic Physicians|Internal Medicine · LOS ANGELES, CA · NPI 1780110338

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 Woojin Joo, MD received $492.07 in general payments during 2025 across 19 reported records.

Lilly USA, LLC accounted for 24.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 12 associated products.

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

ABBVIE 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 CREON as an associated drug or biological on 91561 records involving 20616 distinct recipient NPIs. Public Medicare Part D data also shows 187 claims for Creon by this doctor in 2024.

ABBVIE 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 LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 23 claims for Linzess 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 217 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 JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 217 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 TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 38 claims for Trulicity 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 48 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 77 claims for Rybelsus 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 43 claims for Eliquis by this doctor in 2024.

Sumitomo Pharma America, 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 GEMTESA as an associated drug or biological on 61692 records involving 22152 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Gemtesa by this doctor in 2024.

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

Payment overview · 2025

General Payments

$492.07

19 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
Lilly USA, LLC Unresolved — no canonical attribution shown $120.3824.5%52025
PFIZER INC. Unresolved — no canonical attribution shown $85.5717.4%32025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $56.4811.5%22025
Sumitomo Pharma America, Inc. Unresolved — no canonical attribution shown $55.6411.3%22025
Novo Nordisk Inc Unresolved — no canonical attribution shown $30.716.2%12025
Mannkind Corporation Unresolved — no canonical attribution shown $30.026.1%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $28.215.7%12025
Medline Industries LP Unresolved — no canonical attribution shown $24.925.1%12025
Amgen Inc. Unresolved — no canonical attribution shown $22.614.6%12025
ABBVIE INC. Unresolved — no canonical attribution shown $20.454.2%12025
Exact Sciences Corporation Unresolved — no canonical attribution shown $17.083.5%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$492.0719

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
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc., Lilly USA, LLC $104.02 4 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $85.57 3 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $85.57 3 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $56.48 2 2025
Source payment records
GEMTESA
Normalized: gemtesa
Drug Sumitomo Pharma America, Inc. $55.64 2 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $44.57 2 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $44.57 2 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $30.71 1 2025
Source payment records
AFREZZA
Normalized: afrezza
Drug Mannkind Corporation $30.02 1 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $22.61 1 2025
Source payment records
CREON
Normalized: creon
Drug ABBVIE INC. $20.45 1 2025
Source payment records
The Cologuard Plus Collection Kit
Normalized: the cologuard plus collection kit
Device Exact Sciences Corporation $17.08 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
CREON
creon
2025 Creon 2024 187 exact normalized Medicare Part D
ELIQUIS
eliquis
2025 Eliquis 2024 43 exact normalized Medicare Part D
GEMTESA
gemtesa
2025 Gemtesa 2024 11
Beneficiary count suppressed
exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 217 exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 48 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
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 CREON
open payments reported associated product
CMS Open Payments — General Payments
91561 supporting records · 20616 recipient NPIs · example record 1201352608
Creon · 2024
Exact normalized brand match · 1 Part D row
187 64
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 LINZESS
open payments reported associated product
CMS Open Payments — General Payments
87954 supporting records · 21815 recipient NPIs · example record 1201352608
Linzess · 2024
Exact normalized brand match · 1 Part D row
23 suppressed by CMS
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
217 56
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
217 56
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
38 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
48 13
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
77 11
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
43 13
Sumitomo Pharma America, Inc.
Exact reporting entity; no affiliate inference
2025 GEMTESA
open payments reported associated product
CMS Open Payments — General Payments
61692 supporting records · 22152 recipient NPIs · example record 1176593503
Gemtesa · 2024
Exact normalized brand match · 1 Part D row
11 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 Calcium574208
Amlodipine BesylateAmlodipine Besylate464148
VascepaIcosapent Ethyl31769
Losartan PotassiumLosartan Potassium304112
Metformin HclMetformin Hcl24586
Tamsulosin HclTamsulosin Hcl22764
JardianceEmpagliflozin21756
LidocaineLidocaine20467
OmeprazoleOmeprazole19273
CreonLipase/Protease/Amylase18764
Donepezil HclDonepezil Hcl16543
AzithromycinAzithromycin157135
Levothyroxine SodiumLevothyroxine Sodium15539
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide14052
Olmesartan MedoxomilOlmesartan Medoxomil12829
Metoprolol SuccinateMetoprolol Succinate12636
SimvastatinSimvastatin10237
ClopidogrelClopidogrel Bisulfate10129
Zolpidem TartrateZolpidem Tartrate9425
Pantoprazole SodiumPantoprazole Sodium8530
RybelsusSemaglutide7711
Memantine Hcl ErMemantine Hcl7617
Raloxifene HclRaloxifene Hcl7118
Triamcinolone AcetonideTriamcinolone Acetonide6845
Rosuvastatin CalciumRosuvastatin Calcium6727
MyrbetriqMirabegron6513
JanuviaSitagliptin Phosphate6414
HydrochlorothiazideHydrochlorothiazide6221
Icosapent EthylIcosapent Ethyl6130
NaproxenNaproxen5550
Trazodone HclTrazodone Hcl5524
Alendronate SodiumAlendronate Sodium4919
OzempicSemaglutide4813
Metoprolol TartrateMetoprolol Tartrate4716
EliquisApixaban4313
AmoxicillinAmoxicillin4230
FamotidineFamotidine4227
FarxigaDapagliflozin Propanediol41suppressed
AtenololAtenolol4014
GabapentinGabapentin3919
Memantine HclMemantine Hcl39suppressed
Montelukast SodiumMontelukast Sodium3914
KetoconazoleKetoconazole3817
TrulicityDulaglutide38suppressed
Sertraline HclSertraline Hcl35suppressed
FurosemideFurosemide3417
GlimepirideGlimepiride34suppressed
TradjentaLinagliptin34suppressed
FinasterideFinasteride33suppressed
Fluticasone PropionateFluticasone Propionate3321
Glipizide-MetforminGlipizide/Metformin Hcl3312
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride3211
Sildenafil CitrateSildenafil Citrate32suppressed
LisinoprilLisinopril3112
AlprazolamAlprazolam30suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide2913
Esomeprazole MagnesiumEsomeprazole Magnesium28suppressed
Oxybutynin Chloride ErOxybutynin Chloride27suppressed
RestasisCyclosporine2713
MeloxicamMeloxicam2612
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters2511
TemazepamTemazepam2512
Isosorbide Mononitrate ErIsosorbide Mononitrate24suppressed
Tramadol HclTramadol Hcl24suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril23suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip2311
CyclosporineCyclosporine23suppressed
Dexlansoprazole DrDexlansoprazole2312
Diclofenac SodiumDiclofenac Sodium2318
LinzessLinaclotide23suppressed
Metformin Hcl ErMetformin Hcl23suppressed
Procto-Med HcHydrocortisone2312
AllopurinolAllopurinol22suppressed
BaclofenBaclofen2115
Benazepril HclBenazepril Hcl21suppressed
JanumetSitagliptin Phos/Metformin Hcl21suppressed
Escitalopram OxalateEscitalopram Oxalate20suppressed
LoperamideLoperamide Hcl2018
LorazepamLorazepam20suppressed
PregabalinPregabalin20suppressed
ValsartanValsartan20suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog19suppressed
Desmopressin AcetateDesmopressin Acetate19suppressed
IbuprofenIbuprofen1914
ZenpepLipase/Protease/Amylase19suppressed
CarvedilolCarvedilol18suppressed
Clonidine HclClonidine Hcl18suppressed
FenofibrateFenofibrate18suppressed
Nifedipine ErNifedipine18suppressed
Alcohol SwabsAlcohol Antiseptic Pads17suppressed
ClotrimazoleClotrimazole17suppressed
EntrestoSacubitril/Valsartan17suppressed
EzetimibeEzetimibe16suppressed
HydrocortisoneHydrocortisone16suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog16suppressed
LovastatinLovastatin16suppressed
Quetiapine FumarateQuetiapine Fumarate16suppressed
Tenofovir Disoproxil FumarateTenofovir Disoproxil Fumarate16suppressed
PremproEstrogen,con/M-Progest Acet15suppressed
Meclizine HclMeclizine Hcl14suppressed
MethocarbamolMethocarbamol14suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1414
SucralfateSucralfate14suppressed
Carbidopa-LevodopaCarbidopa/Levodopa13suppressed
ClonazepamClonazepam13suppressed
FenofibrateFenofibrate,micronized13suppressed
Albuterol Sulfate HfaAlbuterol Sulfate12suppressed
Amlodipine-OlmesartanAmlodipine Bes/Olmesartan Med12suppressed
Potassium ChloridePotassium Chloride12suppressed
PremarinEstrogens, Conjugated12suppressed
Repatha SureclickEvolocumab12suppressed
CiclopiroxCiclopirox11suppressed
GemtesaVibegron11suppressed
Hydroxychloroquine SulfateHydroxychloroquine Sulfate11suppressed
MethotrexateMethotrexate Sodium11suppressed
ValacyclovirValacyclovir 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 $492.07 · 19 records Lilly USA, LLC AFREZZA, CREON, ELIQUIS, GEMTESA, JARDIANCE, Kerendia, MOUNJARO, NURTEC ODT, Ozempic, REPATHA, The Cologuard Plus Collection Kit, ZEPBOUND 9
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