Payment overview · 2025
General Payments
$4,528.78
69 reported records · 30 companies
Healthcare provider profile · identity verified
Gang Chen, M.D., PH.D.
Allopathic & Osteopathic Physicians|Internal Medicine|Hematology & Oncology · TOWSON, MD · NPI 1417390576
Verified facts
What the public records show
CMS Open Payments records show Gang Chen, M.D., PH.D. received $4,528.78 in general payments during 2025 across 69 reported records.
AstraZeneca Pharmaceuticals LP accounted for 57.4% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 49 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Imbruvica.
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 31 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 IMBRUVICA as an associated drug or biological on 15599 records involving 6881 distinct recipient NPIs. Public Medicare Part D data also shows 23 claims for Imbruvica by this doctor in 2024.
BeOne Medicines 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 BRUKINSA as an associated drug or biological on 10251 records involving 4941 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Brukinsa 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 122 claims for Eliquis 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 POMALYST as an associated drug or biological on 282 records involving 237 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Pomalyst 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 122 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 SPRYCEL as an associated drug or biological on 32 records involving 32 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Sprycel 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 23 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 76 claims for Xarelto 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 122 claims for Eliquis by this doctor in 2024.
These records do not establish that a payment influenced prescribing or medical care.
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 company | Canonical company | Amount | Share | Records | Year |
|---|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $2,598.36 | 57.4% | 6 | 2025 |
| Exelixis Inc. | Unresolved — no canonical attribution shown | $210.83 | 4.7% | 4 | 2025 |
| Gilead Sciences, Inc. | Unresolved — no canonical attribution shown | $184.08 | 4.1% | 3 | 2025 |
| Daiichi Sankyo Inc. | Unresolved — no canonical attribution shown | $149.01 | 3.3% | 6 | 2025 |
| Janssen Biotech, Inc. | Unresolved — no canonical attribution shown | $136.38 | 3.0% | 5 | 2025 |
| Stemline Therapeutics Inc. | Unresolved — no canonical attribution shown | $131.44 | 2.9% | 1 | 2025 |
| Novartis Pharmaceuticals Corporation | Unresolved — no canonical attribution shown | $129.67 | 2.9% | 5 | 2025 |
| Celgene Corporation | Unresolved — no canonical attribution shown | $112.04 | 2.5% | 4 | 2025 |
| Merck Sharp & Dohme LLC | Unresolved — no canonical attribution shown | $97.63 | 2.2% | 4 | 2025 |
| Regeneron Healthcare Solutions, Inc. | Unresolved — no canonical attribution shown | $86.63 | 1.9% | 3 | 2025 |
| E.R. Squibb & Sons, L.L.C. | Unresolved — no canonical attribution shown | $83.89 | 1.9% | 3 | 2025 |
| Bayer Healthcare Pharmaceuticals Inc. | Unresolved — no canonical attribution shown | $63.40 | 1.4% | 2 | 2025 |
| BeOne Medicines USA, Inc. | Unresolved — no canonical attribution shown | $53.20 | 1.2% | 2 | 2025 |
| Incyte Corporation | Unresolved — no canonical attribution shown | $50.39 | 1.1% | 2 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $45.19 | 1.0% | 2 | 2025 |
| Eisai Inc. | Unresolved — no canonical attribution shown | $40.27 | 0.9% | 2 | 2025 |
| GlaxoSmithKline, LLC. | Unresolved — no canonical attribution shown | $37.63 | 0.8% | 2 | 2025 |
| Astellas Pharma US Inc | Unresolved — no canonical attribution shown | $29.16 | 0.6% | 1 | 2025 |
| Geron Corporation | Unresolved — no canonical attribution shown | $28.93 | 0.6% | 1 | 2025 |
| Pharmacosmos Therapeutics Inc. | Unresolved — no canonical attribution shown | $27.35 | 0.6% | 1 | 2025 |
| ARRAY BIOPHARMA INC | Unresolved — no canonical attribution shown | $27.20 | 0.6% | 1 | 2025 |
| TOLMAR, INC. | Unresolved — no canonical attribution shown | $27.14 | 0.6% | 1 | 2025 |
| pharmaand GmbH | Unresolved — no canonical attribution shown | $27.14 | 0.6% | 1 | 2025 |
| Ipsen Biopharmaceuticals, Inc | Unresolved — no canonical attribution shown | $26.31 | 0.6% | 1 | 2025 |
| Lilly USA, LLC | Unresolved — no canonical attribution shown | $26.12 | 0.6% | 1 | 2025 |
| PFIZER INC. | Unresolved — no canonical attribution shown | $23.36 | 0.5% | 1 | 2025 |
| Genentech USA, Inc. | Unresolved — no canonical attribution shown | $23.07 | 0.5% | 1 | 2025 |
| Caris MPI, Inc. | Unresolved — no canonical attribution shown | $20.68 | 0.5% | 1 | 2025 |
| Azurity Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $16.42 | 0.4% | 1 | 2025 |
| PUMA BIOTECHNOLOGY, INC. | Unresolved — no canonical attribution shown | $15.86 | 0.3% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Consulting Fee | $2,475.00 | 1 |
| Food and Beverage | $2,053.78 | 68 |
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 product | Type | Reported company | Related amount* | Records | Year |
|---|---|---|---|---|---|
| IMFINZI Normalized: imfinzi |
Biological | AstraZeneca Pharmaceuticals LP | $2,475.00 | 1 | 2025 |
Source payment records
|
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| CABOMETYX Normalized: cabometyx |
Drug | Exelixis Inc. | $210.83 | 4 | 2025 |
Source payment records
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| Trodelvy Normalized: trodelvy |
Drug | Gilead Sciences, Inc. | $184.08 | 3 | 2025 |
Source payment records
|
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| Enhertu Normalized: enhertu |
Drug | Daiichi Sankyo Inc. | $149.01 | 6 | 2025 |
Source payment records
|
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| REBLOZYL Normalized: reblozyl |
Biological | Celgene Corporation, Merck Sharp & Dohme LLC | $139.71 | 5 | 2025 |
Source payment records
|
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| Orserdu Normalized: orserdu |
Drug | Stemline Therapeutics Inc. | $131.44 | 1 | 2025 |
Source payment records
|
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| KEYTRUDA Normalized: keytruda |
Biological | Merck Sharp & Dohme LLC | $97.63 | 4 | 2025 |
Source payment records
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| RYBREVANT Normalized: rybrevant |
Drug | Janssen Biotech, Inc. | $89.85 | 3 | 2025 |
Source payment records
|
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| LIBTAYO Normalized: libtayo |
Biological | Regeneron Healthcare Solutions, Inc. | $86.63 | 3 | 2025 |
Source payment records
|
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| CALQUENCE Normalized: calquence |
Drug | AstraZeneca Pharmaceuticals LP | $71.27 | 3 | 2025 |
Source payment records
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| Nubeqa Normalized: nubeqa |
Drug | Bayer Healthcare Pharmaceuticals Inc. | $63.40 | 2 | 2025 |
Source payment records
|
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| Stivarga Normalized: stivarga |
Drug | Bayer Healthcare Pharmaceuticals Inc. | $63.40 | 2 | 2025 |
Source payment records
|
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| OPDIVO Normalized: opdivo |
Biological | E.R. Squibb & Sons, L.L.C. | $58.83 | 2 | 2025 |
Source payment records
|
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| PLUVICTO Normalized: pluvicto |
Drug | Novartis Pharmaceuticals Corporation | $55.26 | 2 | 2025 |
Source payment records
|
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| RUBRACA Normalized: rubraca |
Drug | TOLMAR, INC., pharmaand GmbH | $54.28 | 2 | 2025 |
Source payment records
|
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| TEVIMBRA Normalized: tevimbra |
Drug | BeOne Medicines USA, Inc. | $53.20 | 2 | 2025 |
Source payment records
|
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| ZYNYZ Normalized: zynyz |
Drug | Incyte Corporation | $50.39 | 2 | 2025 |
Source payment records
|
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| TECVAYLI Normalized: tecvayli |
Biological | Janssen Biotech, Inc. | $46.53 | 2 | 2025 |
Source payment records
|
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| LYNPARZA Normalized: lynparza |
Biological, Drug | AstraZeneca Pharmaceuticals LP, Merck Sharp & Dohme LLC | $44.13 | 2 | 2025 |
Source payment records
|
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| Lenvima Normalized: lenvima |
Drug | Eisai Inc. | $40.27 | 2 | 2025 |
Source payment records
|
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| JEMPERLI Normalized: jemperli |
Biological | GlaxoSmithKline, LLC. | $37.63 | 2 | 2025 |
Source payment records
|
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| ZEJULA Normalized: zejula |
Drug | GlaxoSmithKline, LLC. | $37.63 | 2 | 2025 |
Source payment records
|
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| Vyloy Normalized: vyloy |
Drug | Astellas Pharma US Inc | $29.16 | 1 | 2025 |
Source payment records
|
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| RYTELO Normalized: rytelo |
Drug | Geron Corporation | $28.93 | 1 | 2025 |
Source payment records
|
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| IMBRUVICA Normalized: imbruvica |
Drug | ABBVIE INC. | $28.16 | 1 | 2025 |
Source payment records
|
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| MONOFERRIC Normalized: monoferric |
Drug | Pharmacosmos Therapeutics Inc. | $27.35 | 1 | 2025 |
Source payment records
|
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| BRAFTOVI Normalized: braftovi |
Drug | ARRAY BIOPHARMA INC | $27.20 | 1 | 2025 |
Source payment records
|
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| MEKTOVI Normalized: mektovi |
Drug | ARRAY BIOPHARMA INC | $27.20 | 1 | 2025 |
Source payment records
|
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| ELIGARD Normalized: eligard |
Drug | TOLMAR, INC. | $27.14 | 1 | 2025 |
Source payment records
|
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| LUTATHERA Normalized: lutathera |
Drug | Novartis Pharmaceuticals Corporation | $26.86 | 1 | 2025 |
Source payment records
|
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| Onivyde Normalized: onivyde |
Drug | Ipsen Biopharmaceuticals, Inc | $26.31 | 1 | 2025 |
Source payment records
|
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| JAYPIRCA Normalized: jaypirca |
Drug | Lilly USA, LLC | $26.12 | 1 | 2025 |
Source payment records
|
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| VERZENIO Normalized: verzenio |
Drug | Lilly USA, LLC | $26.12 | 1 | 2025 |
Source payment records
|
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| MONJUVI Normalized: monjuvi |
Drug | Incyte Corporation | $25.52 | 1 | 2025 |
Source payment records
|
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| OPDUALAG Normalized: opdualag |
Drug | E.R. Squibb & Sons, L.L.C. | $25.06 | 1 | 2025 |
Source payment records
|
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| JAKAFI Normalized: jakafi |
Drug | Incyte Corporation | $24.87 | 1 | 2025 |
Source payment records
|
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| SCEMBLIX Normalized: scemblix |
Drug | Novartis Pharmaceuticals Corporation | $24.81 | 1 | 2025 |
Source payment records
|
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| KEYTRUDA QLEX Normalized: keytruda qlex |
Biological | Merck Sharp & Dohme LLC | $24.57 | 1 | 2025 |
Source payment records
|
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| IBRANCE Normalized: ibrance |
Drug | PFIZER INC. | $23.36 | 1 | 2025 |
Source payment records
|
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| TUKYSA Normalized: tukysa |
Drug | PFIZER INC. | $23.36 | 1 | 2025 |
Source payment records
|
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| Polivy Normalized: polivy |
Biological | Genentech USA, Inc. | $23.07 | 1 | 2025 |
Source payment records
|
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| KISQALI Normalized: kisqali |
Drug | Novartis Pharmaceuticals Corporation | $22.74 | 1 | 2025 |
Source payment records
|
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| MI CANCER SEEK Normalized: mi cancer seek |
Device | Caris MPI, Inc. | $20.68 | 1 | 2025 |
Source payment records
|
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| WELIREG Normalized: welireg |
Drug | Merck Sharp & Dohme LLC | $19.81 | 1 | 2025 |
Source payment records
|
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| TALVEY Normalized: talvey |
Biological | Janssen Biotech, Inc. | $18.56 | 1 | 2025 |
Source payment records
|
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| VENCLEXTA Normalized: venclexta |
Drug | ABBVIE INC. | $17.03 | 1 | 2025 |
Source payment records
|
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| ERLEADA Normalized: erleada |
Drug | Janssen Biotech, Inc. | $16.47 | 1 | 2025 |
Source payment records
|
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| DANZITEN Normalized: danziten |
Drug | Azurity Pharmaceuticals, Inc. | $16.42 | 1 | 2025 |
Source payment records
|
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| NERLYNX Normalized: nerlynx |
Drug | PUMA BIOTECHNOLOGY, INC. | $15.86 | 1 | 2025 |
Source payment records
|
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* 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 product | Payment year | Part D brand | Part D year | Claims | Match method | Source |
|---|---|---|---|---|---|---|
| IMBRUVICA imbruvica |
2025 | Imbruvica | 2024 | 23 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 company | Payment year | Drug reported by same entity | Open Payments evidence | Part D | Claims | Beneficiaries |
|---|---|---|---|---|---|---|
| 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 |
31 | suppressed by CMS |
| 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 |
23 | suppressed by CMS |
| BeOne Medicines USA, Inc. Exact reporting entity; no affiliate inference |
2025 | BRUKINSA open payments reported associated product |
CMS Open Payments — General Payments 10251 supporting records · 4941 recipient NPIs · example record 1202883638 |
Brukinsa · 2024 Exact normalized brand match · 1 Part D row |
13 | 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 |
122 | 25 |
| Celgene Corporation Exact reporting entity; no affiliate inference |
2025 | POMALYST open payments reported associated product |
CMS Open Payments — General Payments 282 supporting records · 237 recipient NPIs · example record 1184378437 |
Pomalyst · 2024 Exact normalized brand match · 1 Part D row |
19 | 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 |
122 | 25 |
| E.R. Squibb & Sons, L.L.C. Exact reporting entity; no affiliate inference |
2025 | SPRYCEL open payments reported associated product |
CMS Open Payments — General Payments 32 supporting records · 32 recipient NPIs · example record 1184390211 |
Sprycel · 2024 Exact normalized brand match · 1 Part D row |
13 | 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 |
23 | 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 |
76 | 16 |
| 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 |
122 | 25 |
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
| Brand | Generic | Claims | Beneficiaries |
|---|---|---|---|
| Eliquis | Apixaban | 122 | 25 |
| Prochlorperazine Maleate | Prochlorperazine Maleate | 95 | 52 |
| Xarelto | Rivaroxaban | 76 | 16 |
| Imatinib Mesylate | Imatinib Mesylate | 67 | suppressed |
| Anastrozole | Anastrozole | 48 | 15 |
| Hydroxyurea | Hydroxyurea | 42 | suppressed |
| Ondansetron Odt | Ondansetron | 36 | 12 |
| Tramadol Hcl | Tramadol Hcl | 36 | 24 |
| Dexamethasone | Dexamethasone | 33 | 15 |
| Creon | Lipase/Protease/Amylase | 31 | suppressed |
| Folic Acid | Folic Acid | 30 | suppressed |
| Acyclovir | Acyclovir | 29 | suppressed |
| Levothyroxine Sodium | Levothyroxine Sodium | 29 | suppressed |
| Potassium Chloride | Potassium Chloride | 28 | 11 |
| Lenalidomide | Lenalidomide | 26 | suppressed |
| Letrozole | Letrozole | 26 | suppressed |
| Lidocaine-Prilocaine | Lidocaine/Prilocaine | 26 | 17 |
| Famotidine | Famotidine | 23 | suppressed |
| Imbruvica | Ibrutinib | 23 | suppressed |
| Ondansetron Hcl | Ondansetron Hcl | 22 | 12 |
| Pomalyst | Pomalidomide | 19 | suppressed |
| Mirtazapine | Mirtazapine | 17 | suppressed |
| Oxycodone Hcl | Oxycodone Hcl | 17 | 11 |
| Sucralfate | Sucralfate | 14 | suppressed |
| Brukinsa | Zanubrutinib | 13 | suppressed |
| Pantoprazole Sodium | Pantoprazole Sodium | 13 | suppressed |
| Revlimid | Lenalidomide | 13 | suppressed |
| Sprycel | Dasatinib | 13 | suppressed |
| Prednisone | Prednisone | 12 | suppressed |
| Exemestane | Exemestane | 11 | suppressed |
| Gabapentin | Gabapentin | 11 | suppressed |
| Hydrocortisone | Hydrocortisone | 11 | suppressed |
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.
| Year | General Payments | Main payer | Explicit products | Company overlaps | Part D coverage |
|---|---|---|---|---|---|
| 2025 | $4,528.78 · 69 records | AstraZeneca Pharmaceuticals LP | BRAFTOVI, CABOMETYX, CALQUENCE, DANZITEN, ELIGARD, ERLEADA, Enhertu, IBRANCE, IMBRUVICA, IMFINZI, JAKAFI, JAYPIRCA, JEMPERLI, KEYTRUDA, KEYTRUDA QLEX, KISQALI, LIBTAYO, LUTATHERA, LYNPARZA, Lenvima, MEKTOVI, MI CANCER SEEK, MONJUVI, MONOFERRIC, NERLYNX, Nubeqa, OPDIVO, OPDUALAG, Onivyde, Orserdu, PLUVICTO, Polivy, REBLOZYL, RUBRACA, RYBREVANT, RYTELO, SCEMBLIX, Stivarga, TALVEY, TECVAYLI, TEVIMBRA, TUKYSA, Trodelvy, VENCLEXTA, VERZENIO, Vyloy, WELIREG, ZEJULA, ZYNYZ | 10 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Imbruvica play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with ABBVIE INC.?
- Are there reasonable alternatives I should understand when we discuss treatment options?
- How should I interpret the industry-payment records shown here in the context of my care?
These are general questions generated from reviewed templates. They are not personalized medical advice.
Sources and limitations
How to read this page
- Payment and Medicare prescribing data can cover different years; every comparison shows both years explicitly.
- Part D does not represent a doctor’s entire practice; it excludes many patients and is subject to CMS public-release thresholds.
- Company–drug relationships must have an auditable source, a precise relationship type, and a valid evidence period. Unresolved mappings are not published.
- Generic drug claims are not attributed to a specific manufacturer without manufacturer-level evidence.
- When a source extract is incomplete, missing rows are never treated as proof of no payments or no prescriptions.
Loaded source releases
| Dataset | Year | Publication | Source |
|---|---|---|---|
| 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 |
Full methodology · Questions & answers · Report a possible error