Healthcare provider profile · identity verified

Daniel Gene Chong, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Hematology & Oncology · FAIRFAX, VA · NPI 1942462601

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 Daniel Gene Chong, M.D. received $927.11 in general payments during 2025 across 34 reported records.

AstraZeneca Pharmaceuticals LP accounted for 20.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 34 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Imbruvica, Venclexta, Xtandi.

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 IMBRUVICA as an associated drug or biological on 15599 records involving 6881 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Imbruvica 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 VENCLEXTA as an associated drug or biological on 10417 records involving 4944 distinct recipient NPIs. Public Medicare Part D data also shows 22 claims for Venclexta by this doctor in 2024.

ARRAY BIOPHARMA 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 XTANDI as an associated drug or biological on 98 records involving 88 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Xtandi 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 LYNPARZA as an associated drug or biological on 9531 records involving 5030 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Lynparza 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 TAGRISSO as an associated drug or biological on 5285 records involving 2776 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Tagrisso by this doctor in 2024.

Celgene Corporation 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 25 records involving 24 distinct recipient NPIs. Public Medicare Part D data also shows 66 claims for Eliquis by this doctor in 2024.

E.R. Squibb & Sons, L.L.C. 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 27956 records involving 14870 distinct recipient NPIs. Public Medicare Part D data also shows 66 claims for Eliquis by this doctor in 2024.

Genentech USA, 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 Alecensa as an associated drug or biological on 194 records involving 149 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Alecensa by this doctor in 2024.

Genentech USA, 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 Venclexta as an associated drug or biological on 2896 records involving 2018 distinct recipient NPIs. Public Medicare Part D data also shows 22 claims for Venclexta by this doctor in 2024.

Incyte Corporation reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported JAKAFI as an associated drug or biological on 14854 records involving 6477 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Jakafi by this doctor in 2024.

Janssen Biotech, 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 IMBRUVICA as an associated drug or biological on 47 records involving 33 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Imbruvica by this doctor in 2024.

Janssen Biotech, 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 XARELTO as an associated drug or biological on 24 records involving 23 distinct recipient NPIs. Public Medicare Part D data also shows 20 claims for Xarelto 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 LYNPARZA as an associated drug or biological on 10903 records involving 6595 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Lynparza 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 66 claims for Eliquis 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 XTANDI as an associated drug or biological on 19368 records involving 7657 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Xtandi by this doctor in 2024.

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

Payment overview · 2025

General Payments

$927.11

34 reported records · 20 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 $188.5620.3%52025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $91.729.9%32025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $87.209.4%42025
Rigel Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $79.768.6%32025
PFIZER INC. Unresolved — no canonical attribution shown $65.947.1%32025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $42.614.6%12025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $40.384.4%22025
Iovance Biotherapeutics, Inc. Unresolved — no canonical attribution shown $35.533.8%12025
ABBVIE INC. Unresolved — no canonical attribution shown $34.873.8%12025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $34.283.7%12025
Daiichi Sankyo Inc. Unresolved — no canonical attribution shown $26.822.9%12025
Stemline Therapeutics Inc. Unresolved — no canonical attribution shown $26.622.9%12025
ARRAY BIOPHARMA INC Unresolved — no canonical attribution shown $24.392.6%12025
Celgene Corporation Unresolved — no canonical attribution shown $24.022.6%12025
Incyte Corporation Unresolved — no canonical attribution shown $23.672.5%12025
Agios Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $23.442.5%12025
PUMA BIOTECHNOLOGY, INC. Unresolved — no canonical attribution shown $22.462.4%12025
Genentech USA, Inc. Unresolved — no canonical attribution shown $19.662.1%12025
EMD Serono, Inc. Unresolved — no canonical attribution shown $18.972.0%12025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $16.211.8%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$858.6233
Education$68.491

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
IMFINZI
Normalized: imfinzi
Biological AstraZeneca Pharmaceuticals LP $188.56 5 2025
Source payment records
JEMPERLI
Normalized: jemperli
Biological GlaxoSmithKline, LLC. $87.20 4 2025
Source payment records
ZEJULA
Normalized: zejula
Drug GlaxoSmithKline, LLC. $87.20 4 2025
Source payment records
Gavreto
Normalized: gavreto
Drug Rigel Pharmaceuticals, Inc. $79.76 3 2025
Source payment records
Rezlidhia
Normalized: rezlidhia
Drug Rigel Pharmaceuticals, Inc. $79.76 3 2025
Source payment records
TAVALISSE
Normalized: tavalisse
Drug Rigel Pharmaceuticals, Inc. $79.76 3 2025
Source payment records
FRUZAQLA
Normalized: fruzaqla
Drug Takeda Pharmaceuticals U.S.A., Inc. $42.61 1 2025
Source payment records
KISQALI
Normalized: kisqali
Drug Novartis Pharmaceuticals Corporation $40.38 2 2025
Source payment records
Amtagvi
Normalized: amtagvi
Drug Iovance Biotherapeutics, Inc. $35.53 1 2025
Source payment records
EPKINLY
Normalized: epkinly
Drug ABBVIE INC. $34.87 1 2025
Source payment records
IMBRUVICA
Normalized: imbruvica
Drug ABBVIE INC. $34.87 1 2025
Source payment records
TALVEY
Normalized: talvey
Biological Janssen Biotech, Inc. $34.43 1 2025
Source payment records
OPDIVO
Normalized: opdivo
Biological E.R. Squibb & Sons, L.L.C. $34.28 1 2025
Source payment records
CARVYKTI
Normalized: carvykti
Drug Janssen Biotech, Inc. $29.07 1 2025
Source payment records
RYBREVANT
Normalized: rybrevant
Drug Janssen Biotech, Inc. $29.07 1 2025
Source payment records
DARZALEX
Normalized: darzalex
Drug Janssen Biotech, Inc. $28.22 1 2025
Source payment records
TECVAYLI
Normalized: tecvayli
Biological Janssen Biotech, Inc. $28.22 1 2025
Source payment records
Enhertu
Normalized: enhertu
Drug Daiichi Sankyo Inc. $26.82 1 2025
Source payment records
Orserdu
Normalized: orserdu
Drug Stemline Therapeutics Inc. $26.62 1 2025
Source payment records
INLYTA
Normalized: inlyta
Drug PFIZER INC. $25.58 1 2025
Source payment records
PADCEV
Normalized: padcev
Biological PFIZER INC. $25.58 1 2025
Source payment records
BRAFTOVI
Normalized: braftovi
Drug ARRAY BIOPHARMA INC $24.39 1 2025
Source payment records
REBLOZYL
Normalized: reblozyl
Biological Celgene Corporation $24.02 1 2025
Source payment records
MONJUVI
Normalized: monjuvi
Drug Incyte Corporation $23.67 1 2025
Source payment records
ZYNYZ
Normalized: zynyz
Drug Incyte Corporation $23.67 1 2025
Source payment records
PYRUKYND
Normalized: pyrukynd
Drug Agios Pharmaceuticals, Inc. $23.44 1 2025
Source payment records
NERLYNX
Normalized: nerlynx
Drug PUMA BIOTECHNOLOGY, INC. $22.46 1 2025
Source payment records
TIVDAK
Normalized: tivdak
Biological PFIZER INC. $21.90 1 2025
Source payment records
Venclexta
Normalized: venclexta
Biological Genentech USA, Inc. $19.66 1 2025
Source payment records
ORGOVYX
Normalized: orgovyx
Drug PFIZER INC. $18.46 1 2025
Source payment records
TALZENNA
Normalized: talzenna
Drug PFIZER INC. $18.46 1 2025
Source payment records
XTANDI
Normalized: xtandi
Drug PFIZER INC. $18.46 1 2025
Source payment records
KEYTRUDA
Normalized: keytruda
Biological Merck Sharp & Dohme LLC $16.21 1 2025
Source payment records
KEYTRUDA QLEX
Normalized: keytruda qlex
Biological Merck Sharp & Dohme LLC $16.21 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
IMBRUVICA
imbruvica
2025 Imbruvica 2024 15
Beneficiary count suppressed
exact normalized Medicare Part D
Venclexta
venclexta
2025 Venclexta 2024 22
Beneficiary count suppressed
exact normalized Medicare Part D
XTANDI
xtandi
2025 Xtandi 2024 14
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 IMBRUVICA
open payments reported associated product
CMS Open Payments — General Payments
15599 supporting records · 6881 recipient NPIs · example record 1201352838
Imbruvica · 2024
Exact normalized brand match · 1 Part D row
15 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 VENCLEXTA
open payments reported associated product
CMS Open Payments — General Payments
10417 supporting records · 4944 recipient NPIs · example record 1201353144
Venclexta · 2024
Exact normalized brand match · 1 Part D row
22 suppressed by CMS
ARRAY BIOPHARMA INC
Exact reporting entity; no affiliate inference
2025 XTANDI
open payments reported associated product
CMS Open Payments — General Payments
98 supporting records · 88 recipient NPIs · example record 1228800820
Xtandi · 2024
Exact normalized brand match · 1 Part D row
14 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 LYNPARZA
open payments reported associated product
CMS Open Payments — General Payments
9531 supporting records · 5030 recipient NPIs · example record 1206131376
Lynparza · 2024
Exact normalized brand match · 1 Part D row
19 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 TAGRISSO
open payments reported associated product
CMS Open Payments — General Payments
5285 supporting records · 2776 recipient NPIs · example record 1206131546
Tagrisso · 2024
Exact normalized brand match · 1 Part D row
25 suppressed by CMS
Celgene Corporation
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
25 supporting records · 24 recipient NPIs · example record 1184385048
Eliquis · 2024
Exact normalized brand match · 1 Part D row
66 suppressed by CMS
E.R. Squibb & Sons, L.L.C.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
27956 supporting records · 14870 recipient NPIs · example record 1184377713
Eliquis · 2024
Exact normalized brand match · 1 Part D row
66 suppressed by CMS
Genentech USA, Inc.
Exact reporting entity; no affiliate inference
2025 Alecensa
open payments reported associated product
CMS Open Payments — General Payments
194 supporting records · 149 recipient NPIs · example record 1211488956
Alecensa · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
Genentech USA, Inc.
Exact reporting entity; no affiliate inference
2025 Venclexta
open payments reported associated product
CMS Open Payments — General Payments
2896 supporting records · 2018 recipient NPIs · example record 1211488584
Venclexta · 2024
Exact normalized brand match · 1 Part D row
22 suppressed by CMS
Incyte Corporation
Exact reporting entity; no affiliate inference
2025 JAKAFI
open payments reported associated product
CMS Open Payments — General Payments
14854 supporting records · 6477 recipient NPIs · example record 1225959940
Jakafi · 2024
Exact normalized brand match · 1 Part D row
29 suppressed by CMS
Janssen Biotech, Inc.
Exact reporting entity; no affiliate inference
2025 IMBRUVICA
open payments reported associated product
CMS Open Payments — General Payments
47 supporting records · 33 recipient NPIs · example record 1174328453
Imbruvica · 2024
Exact normalized brand match · 1 Part D row
15 suppressed by CMS
Janssen Biotech, Inc.
Exact reporting entity; no affiliate inference
2025 XARELTO
open payments reported associated product
CMS Open Payments — General Payments
24 supporting records · 23 recipient NPIs · example record 1174259978
Xarelto · 2024
Exact normalized brand match · 1 Part D row
20 suppressed by CMS
Merck Sharp & Dohme LLC
Exact reporting entity; no affiliate inference
2025 LYNPARZA
open payments reported associated product
CMS Open Payments — General Payments
10903 supporting records · 6595 recipient NPIs · example record 1237992238
Lynparza · 2024
Exact normalized brand match · 1 Part D row
19 suppressed by CMS
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
66 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 XTANDI
open payments reported associated product
CMS Open Payments — General Payments
19368 supporting records · 7657 recipient NPIs · example record 1228794230
Xtandi · 2024
Exact normalized brand match · 1 Part D row
14 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
AnastrozoleAnastrozole10930
EliquisApixaban66suppressed
PrednisonePrednisone6118
AcyclovirAcyclovir60suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim47suppressed
Imatinib MesylateImatinib Mesylate45suppressed
Tamoxifen CitrateTamoxifen Citrate45suppressed
BrukinsaZanubrutinib42suppressed
Abiraterone AcetateAbiraterone Acetate41suppressed
HydroxyureaHydroxyurea34suppressed
JakafiRuxolitinib Phosphate29suppressed
TagrissoOsimertinib Mesylate25suppressed
DexamethasoneDexamethasone23suppressed
VenclextaVenetoclax22suppressed
LenalidomideLenalidomide20suppressed
XareltoRivaroxaban20suppressed
LynparzaOlaparib19suppressed
NubeqaDarolutamide17suppressed
LetrozoleLetrozole16suppressed
HydrocortisoneHydrocortisone15suppressed
ImbruvicaIbrutinib15suppressed
Prochlorperazine MaleateProchlorperazine Maleate1513
XtandiEnzalutamide14suppressed
Alendronate SodiumAlendronate Sodium13suppressed
RevlimidLenalidomide12suppressed
AlecensaAlectinib 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 $927.11 · 34 records AstraZeneca Pharmaceuticals LP Amtagvi, BRAFTOVI, CARVYKTI, DARZALEX, EPKINLY, Enhertu, FRUZAQLA, Gavreto, IMBRUVICA, IMFINZI, INLYTA, JEMPERLI, KEYTRUDA, KEYTRUDA QLEX, KISQALI, MONJUVI, NERLYNX, OPDIVO, ORGOVYX, Orserdu, PADCEV, PYRUKYND, REBLOZYL, RYBREVANT, Rezlidhia, TALVEY, TALZENNA, TAVALISSE, TECVAYLI, TIVDAK, Venclexta, XTANDI, ZEJULA, ZYNYZ 15
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