Healthcare provider profile · identity verified

Stephen P Chen, MD

Allopathic & Osteopathic Physicians|Internal Medicine · MONTEREY PARK, CA · NPI 1205821477

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 Stephen P Chen, MD received $72,215.94 in general payments during 2025 across 149 reported records.

AstraZeneca Pharmaceuticals LP accounted for 72.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 25 associated products.

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

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 65 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 12 claims for Linzess 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 LUMIGAN as an associated drug or biological on 25016 records involving 7645 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Lumigan 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 SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Synthroid by this doctor in 2024.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Farxiga 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 83 claims for Jardiance 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 OFEV as an associated drug or biological on 14236 records involving 6873 distinct recipient NPIs. Public Medicare Part D data also shows 28 claims for Ofev by this doctor in 2024.

GlaxoSmithKline, 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 NUCALA as an associated drug or biological on 100127 records involving 16970 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Nucala by this doctor in 2024.

GlaxoSmithKline, 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 TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 563 claims for Trelegy Ellipta 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 83 claims for Jardiance by this doctor in 2024.

Merck Sharp & Dohme 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 Adempas as an associated drug or biological on 14 records involving 2 distinct recipient NPIs. Public Medicare Part D data also shows 28 claims for Adempas by this doctor in 2024.

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

Payment overview · 2025

General Payments

$72,215.94

149 reported records · 13 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
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $52,330.8472.5%642025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $14,709.2120.4%342025
Verona Pharma, Inc. Unresolved — no canonical attribution shown $2,714.783.8%152025
Viatris Specialty LLC Unresolved — no canonical attribution shown $1,437.092.0%52025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $318.460.4%52025
ABBVIE INC. Unresolved — no canonical attribution shown $221.610.3%112025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $128.420.2%52025
Actelion Pharmaceuticals US, Inc. Unresolved — no canonical attribution shown $126.220.2%32025
Regeneron Healthcare Solutions, Inc. Unresolved — no canonical attribution shown $112.300.2%22025
Novo Nordisk Inc Unresolved — no canonical attribution shown $45.560.1%22025
United Therapeutics Corporation Unresolved — no canonical attribution shown $31.690.0%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $20.030.0%12025
GENZYME CORPORATION Unresolved — no canonical attribution shown $19.730.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$63,092.5029
Food and Beverage$4,832.9298
Honoraria$2,000.001
Travel and Lodging$1,334.4218
Education$491.102
Consulting Fee$465.001

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
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $51,967.43 56 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $14,144.63 14 2025
Source payment records
Ohtuvayre
Normalized: ohtuvayre
Drug Verona Pharma, Inc. $2,714.78 15 2025
Source payment records
YUPELRI
Normalized: yupelri
Drug Viatris Specialty LLC $1,437.09 5 2025
Source payment records
NUCALA
Normalized: nucala
Biological GlaxoSmithKline, LLC. $564.58 20 2025
Source payment records
WINREVAIR
Normalized: winrevair
Biological Merck Sharp & Dohme LLC $278.33 3 2025
Source payment records
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $241.58 7 2025
Source payment records
TEFLARO
Normalized: teflaro
Drug ABBVIE INC. $221.61 11 2025
Source payment records
AVYCAZ
Normalized: avycaz
Drug ABBVIE INC. $217.78 10 2025
Source payment records
DALVANCE
Normalized: dalvance
Drug ABBVIE INC. $194.15 8 2025
Source payment records
EMBLAVEO
Normalized: emblaveo
Drug ABBVIE INC. $157.51 7 2025
Source payment records
DUPIXENT
Normalized: dupixent
Biological GENZYME CORPORATION, Regeneron Healthcare Solutions, Inc. $132.03 3 2025
Source payment records
OPSUMIT
Normalized: opsumit
Drug Actelion Pharmaceuticals US, Inc. $126.22 3 2025
Source payment records
UPTRAVI
Normalized: uptravi
Drug Actelion Pharmaceuticals US, Inc. $126.22 3 2025
Source payment records
TEZSPIRE
Normalized: tezspire
Biological AstraZeneca Pharmaceuticals LP $121.83 1 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $52.80 2 2025
Source payment records
OFEV
Normalized: ofev
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $50.38 2 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $45.56 2 2025
Source payment records
SHINGRIX
Normalized: shingrix
Biological GlaxoSmithKline, LLC. $41.08 2 2025
Source payment records
ZERBAXA
Normalized: zerbaxa
Drug Merck Sharp & Dohme LLC $40.13 2 2025
Source payment records
Tyvaso
Normalized: tyvaso
Drug United Therapeutics Corporation $31.69 1 2025
Source payment records
JASCAYD
Normalized: jascayd
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $25.24 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $24.02 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $20.03 1 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $20.03 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 83 exact normalized Medicare Part D
NUCALA
nucala
2025 Nucala 2024 13
Beneficiary count suppressed
exact normalized Medicare Part D
OFEV
ofev
2025 Ofev 2024 28
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
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
65 14
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
12 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 LUMIGAN
open payments reported associated product
CMS Open Payments — General Payments
25016 supporting records · 7645 recipient NPIs · example record 1201352548
Lumigan · 2024
Exact normalized brand match · 1 Part D row
16 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 SYNTHROID
open payments reported associated product
CMS Open Payments — General Payments
10655 supporting records · 4881 recipient NPIs · example record 1201352636
Synthroid · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 FARXIGA
open payments reported associated product
CMS Open Payments — General Payments
106133 supporting records · 42906 recipient NPIs · example record 1206131362
Farxiga · 2024
Exact normalized brand match · 1 Part D row
15 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
83 13
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 OFEV
open payments reported associated product
CMS Open Payments — General Payments
14236 supporting records · 6873 recipient NPIs · example record 1221811762
Ofev · 2024
Exact normalized brand match · 1 Part D row
28 suppressed by CMS
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 NUCALA
open payments reported associated product
CMS Open Payments — General Payments
100127 supporting records · 16970 recipient NPIs · example record 1190332378
Nucala · 2024
Exact normalized brand match · 1 Part D row
13 suppressed by CMS
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
563 104
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
83 13
Merck Sharp & Dohme LLC
Exact reporting entity; no affiliate inference
2025 Adempas
open payments reported associated product
CMS Open Payments — General Payments
14 supporting records · 2 recipient NPIs · example record 1237996458
Adempas · 2024
Exact normalized brand match · 1 Part D row
28 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
Montelukast SodiumMontelukast Sodium621134
Trelegy ElliptaFluticasone/Umeclidin/Vilanter563104
Albuterol Sulfate HfaAlbuterol Sulfate465116
Fluticasone PropionateFluticasone Propionate388103
RoflumilastRoflumilast33958
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr25850
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride20348
Breztri AerosphereBudesonide/Glycopyr/Formoterol18650
Breo ElliptaFluticasone/Vilanterol17428
LorazepamLorazepam16228
Combivent RespimatIpratropium/Albuterol Sulfate15026
Ventolin HfaAlbuterol Sulfate14033
PrednisonePrednisone13867
Zolpidem TartrateZolpidem Tartrate11930
OmeprazoleOmeprazole8723
FurosemideFurosemide8625
Stiolto RespimatTiotropium Br/Olodaterol Hcl8415
JardianceEmpagliflozin8313
Escitalopram OxalateEscitalopram Oxalate8115
Amlodipine BesylateAmlodipine Besylate7814
Fluticasone-SalmeterolFluticasone Propion/Salmeterol7221
Pantoprazole SodiumPantoprazole Sodium7116
GabapentinGabapentin6915
Tamsulosin HclTamsulosin Hcl6812
Azelastine HclAzelastine Hcl6613
Losartan PotassiumLosartan Potassium6613
CreonLipase/Protease/Amylase6514
LevofloxacinLevofloxacin5837
Spiriva HandihalerTiotropium Bromide56suppressed
Potassium ChloridePotassium Chloride5512
Atorvastatin CalciumAtorvastatin Calcium54suppressed
ClonazepamClonazepam5217
Olmesartan MedoxomilOlmesartan Medoxomil5211
AzithromycinAzithromycin4929
EliquisApixaban49suppressed
HydrochlorothiazideHydrochlorothiazide48suppressed
Megestrol AcetateMegestrol Acetate4720
Wixela InhubFluticasone Propion/Salmeterol4512
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav4430
Metoprolol SuccinateMetoprolol Succinate38suppressed
RestasisCyclosporine38suppressed
Ropinirole HclRopinirole Hcl36suppressed
MirtazapineMirtazapine35suppressed
SimvastatinSimvastatin35suppressed
TemazepamTemazepam35suppressed
Theophylline ErTheophylline Anhydrous35suppressed
Spiriva RespimatTiotropium Bromide34suppressed
Levothyroxine SodiumLevothyroxine Sodium31suppressed
PentoxifyllinePentoxifylline31suppressed
Arnuity ElliptaFluticasone Furoate30suppressed
Rosuvastatin CalciumRosuvastatin Calcium29suppressed
AdempasRiociguat28suppressed
NystatinNystatin28suppressed
OfevNintedanib Esylate28suppressed
JanuviaSitagliptin Phosphate27suppressed
Quetiapine FumarateQuetiapine Fumarate27suppressed
Sertraline HclSertraline Hcl27suppressed
HydrocortisoneHydrocortisone26suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen25suppressed
Metformin HclMetformin Hcl25suppressed
Sildenafil CitrateSildenafil Citrate25suppressed
AmbrisentanAmbrisentan24suppressed
FinasterideFinasteride24suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid24suppressed
PregabalinPregabalin23suppressed
Triamcinolone AcetonideTriamcinolone Acetonide23suppressed
Diphenhydramine HclDiphenhydramine Hcl2217
Mometasone FuroateMometasone Furoate22suppressed
AtenololAtenolol21suppressed
ClopidogrelClopidogrel Bisulfate21suppressed
NitroglycerinNitroglycerin21suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate20suppressed
CarvedilolCarvedilol20suppressed
FamotidineFamotidine19suppressed
SucralfateSucralfate19suppressed
Advair HfaFluticasone Propion/Salmeterol18suppressed
DigoxinDigoxin18suppressed
Meclizine HclMeclizine Hcl18suppressed
NeuproRotigotine18suppressed
Fasenra PenBenralizumab17suppressed
Methylprednisolone Sodium SuccMethylprednisolone Sod Succ1714
AllopurinolAllopurinol16suppressed
IbuprofenIbuprofen16suppressed
LumiganBimatoprost16suppressed
BreynaBudesonide/Formoterol Fumarate15suppressed
Duloxetine HclDuloxetine Hcl15suppressed
FarxigaDapagliflozin Propanediol15suppressed
Terazosin HclTerazosin Hcl15suppressed
Trazodone HclTrazodone Hcl15suppressed
VoriconazoleVoriconazole15suppressed
CeftriaxoneCeftriaxone Sodium1411
CelecoxibCelecoxib14suppressed
CiclopiroxCiclopirox Olamine14suppressed
Methylphenidate HclMethylphenidate Hcl14suppressed
VascepaIcosapent Ethyl14suppressed
Carbidopa-LevodopaCarbidopa/Levodopa13suppressed
Dilt-XrDiltiazem Hcl13suppressed
Fluticasone-Salmeterol HfaFluticasone Propion/Salmeterol13suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate13suppressed
Levalbuterol Tartrate HfaLevalbuterol Tartrate13suppressed
Metoclopramide HclMetoclopramide Hcl13suppressed
NucalaMepolizumab13suppressed
BelsomraSuvorexant12suppressed
CilostazolCilostazol12suppressed
EszopicloneEszopiclone12suppressed
FluocinonideFluocinonide12suppressed
Incruse ElliptaUmeclidinium Bromide12suppressed
LinzessLinaclotide12suppressed
Nifedipine ErNifedipine12suppressed
RifabutinRifabutin12suppressed
Sodium Chloride0.9 % Sodium Chloride12suppressed
Timolol MaleateTimolol Maleate12suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl11suppressed
ErythromycinErythromycin Base11suppressed
FenofibrateFenofibrate11suppressed
Fluticasone-VilanterolFluticasone/Vilanterol11suppressed
GlimepirideGlimepiride11suppressed
Midodrine HclMidodrine Hcl11suppressed
RivastigmineRivastigmine11suppressed
SynthroidLevothyroxine Sodium11suppressed
Venlafaxine HclVenlafaxine 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 $72,215.94 · 149 records AstraZeneca Pharmaceuticals LP AIRSUPRA, AREXVY, AVYCAZ, BREZTRI, DALVANCE, DUPIXENT, EMBLAVEO, JARDIANCE, JASCAYD, MOUNJARO, NUCALA, OFEV, OPSUMIT, Ohtuvayre, Ozempic, Rybelsus, SHINGRIX, TEFLARO, TEZSPIRE, Tyvaso, UPTRAVI, WINREVAIR, YUPELRI, ZEPBOUND, ZERBAXA 11
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