Payment overview · 2025
General Payments
$773.87
33 reported records · 14 companies
Healthcare provider profile · identity verified
Karleung Siu, M.D.
Allopathic & Osteopathic Physicians|Internal Medicine|Hematology · TEANECK, NJ · NPI 1649417437
Verified facts
What the public records show
CMS Open Payments records show Karleung Siu, M.D. received $773.87 in general payments during 2025 across 33 reported records.
Novartis Pharmaceuticals Corporation accounted for 31.3% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 22 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Brukinsa.
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 CALQUENCE as an associated drug or biological on 8404 records involving 3935 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Calquence 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 34 claims for Brukinsa 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 98 claims for Eliquis 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 36 claims for Xarelto by this doctor in 2024.
Novartis Pharmaceuticals 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 PROMACTA as an associated drug or biological on 47 records involving 47 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Promacta 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 98 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 |
|---|---|---|---|---|---|
| Novartis Pharmaceuticals Corporation | Unresolved — no canonical attribution shown | $242.41 | 31.3% | 4 | 2025 |
| Merck Sharp & Dohme LLC | Unresolved — no canonical attribution shown | $108.41 | 14.0% | 5 | 2025 |
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $78.90 | 10.2% | 5 | 2025 |
| PFIZER INC. | Unresolved — no canonical attribution shown | $71.45 | 9.2% | 4 | 2025 |
| E.R. Squibb & Sons, L.L.C. | Unresolved — no canonical attribution shown | $41.42 | 5.3% | 3 | 2025 |
| Lilly USA, LLC | Unresolved — no canonical attribution shown | $40.30 | 5.2% | 2 | 2025 |
| Janssen Biotech, Inc. | Unresolved — no canonical attribution shown | $35.68 | 4.6% | 2 | 2025 |
| Daiichi Sankyo Inc. | Unresolved — no canonical attribution shown | $31.47 | 4.1% | 2 | 2025 |
| Bayer Healthcare Pharmaceuticals Inc. | Unresolved — no canonical attribution shown | $26.77 | 3.5% | 1 | 2025 |
| TAIHO ONCOLOGY, INC. | Unresolved — no canonical attribution shown | $23.05 | 3.0% | 1 | 2025 |
| EMD Serono, Inc. | Unresolved — no canonical attribution shown | $21.16 | 2.7% | 1 | 2025 |
| PharmaEssentia USA Corporation | Unresolved — no canonical attribution shown | $19.00 | 2.5% | 1 | 2025 |
| Genentech USA, Inc. | Unresolved — no canonical attribution shown | $17.48 | 2.3% | 1 | 2025 |
| BeOne Medicines USA, Inc. | Unresolved — no canonical attribution shown | $16.37 | 2.1% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $574.47 | 31 |
| Long term medical supply or device loan | $199.40 | 2 |
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 |
|---|---|---|---|---|---|
| KISQALI Normalized: kisqali |
Drug | Novartis Pharmaceuticals Corporation | $242.41 | 4 | 2025 |
Source payment records
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| KEYTRUDA Normalized: keytruda |
Biological | Merck Sharp & Dohme LLC | $108.41 | 5 | 2025 |
Source payment records
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| ELREXFIO Normalized: elrexfio |
Drug | PFIZER INC. | $56.62 | 3 | 2025 |
Source payment records
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| LYNPARZA Normalized: lynparza |
Drug | AstraZeneca Pharmaceuticals LP | $48.88 | 3 | 2025 |
Source payment records
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| OPDIVO Normalized: opdivo |
Biological | E.R. Squibb & Sons, L.L.C. | $41.42 | 3 | 2025 |
Source payment records
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| JAYPIRCA Normalized: jaypirca |
Drug | Lilly USA, LLC | $40.30 | 2 | 2025 |
Source payment records
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| VERZENIO Normalized: verzenio |
Drug | Lilly USA, LLC | $40.30 | 2 | 2025 |
Source payment records
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| DATROWAY Normalized: datroway |
Drug | Daiichi Sankyo Inc. | $31.47 | 2 | 2025 |
Source payment records
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| TAGRISSO Normalized: tagrisso |
Drug | AstraZeneca Pharmaceuticals LP | $30.02 | 2 | 2025 |
Source payment records
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| Nubeqa Normalized: nubeqa |
Drug | Bayer Healthcare Pharmaceuticals Inc. | $26.77 | 1 | 2025 |
Source payment records
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| INQOVI Normalized: inqovi |
Drug | TAIHO ONCOLOGY, INC. | $23.05 | 1 | 2025 |
Source payment records
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| LONSURF Normalized: lonsurf |
Drug | TAIHO ONCOLOGY, INC. | $23.05 | 1 | 2025 |
Source payment records
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| KEYTRUDA QLEX Normalized: keytruda qlex |
Biological | Merck Sharp & Dohme LLC | $20.76 | 1 | 2025 |
Source payment records
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| BESREMI Normalized: besremi |
Drug | PharmaEssentia USA Corporation | $19.00 | 1 | 2025 |
Source payment records
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| ADCETRIS Normalized: adcetris |
Biological | PFIZER INC. | $18.62 | 1 | 2025 |
Source payment records
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| DARZALEX Normalized: darzalex |
Biological | Janssen Biotech, Inc. | $18.50 | 1 | 2025 |
Source payment records
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| TALVEY Normalized: talvey |
Biological | Janssen Biotech, Inc. | $18.50 | 1 | 2025 |
Source payment records
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| Venclexta Normalized: venclexta |
Biological | Genentech USA, Inc. | $17.48 | 1 | 2025 |
Source payment records
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| RYBREVANT Normalized: rybrevant |
Drug | Janssen Biotech, Inc. | $17.18 | 1 | 2025 |
Source payment records
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| BRUKINSA Normalized: brukinsa |
Drug | BeOne Medicines USA, Inc. | $16.37 | 1 | 2025 |
Source payment records
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| IBRANCE Normalized: ibrance |
Drug | PFIZER INC. | $14.83 | 1 | 2025 |
Source payment records
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| TUKYSA Normalized: tukysa |
Drug | PFIZER INC. | $14.83 | 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 |
|---|---|---|---|---|---|---|
| BRUKINSA brukinsa |
2025 | Brukinsa | 2024 | 34 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 |
|---|---|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP Exact reporting entity; no affiliate inference |
2025 | CALQUENCE open payments reported associated product |
CMS Open Payments — General Payments 8404 supporting records · 3935 recipient NPIs · example record 1206131382 |
Calquence · 2024 Exact normalized brand match · 1 Part D row |
14 | 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 |
34 | 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 |
98 | 21 |
| 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 |
36 | suppressed by CMS |
| Novartis Pharmaceuticals Corporation Exact reporting entity; no affiliate inference |
2025 | PROMACTA open payments reported associated product |
CMS Open Payments — General Payments 47 supporting records · 47 recipient NPIs · example record 1200028032 |
Promacta · 2024 Exact normalized brand match · 1 Part D row |
14 | 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 |
98 | 21 |
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 |
|---|---|---|---|
| Anastrozole | Anastrozole | 151 | 47 |
| Eliquis | Apixaban | 98 | 21 |
| Jakafi | Ruxolitinib Phosphate | 52 | suppressed |
| Prednisone | Prednisone | 48 | 22 |
| Gabapentin | Gabapentin | 45 | 14 |
| Oxycodone Hcl | Oxycodone Hcl | 43 | 16 |
| Xarelto | Rivaroxaban | 36 | suppressed |
| Brukinsa | Zanubrutinib | 34 | suppressed |
| Acyclovir | Acyclovir | 25 | suppressed |
| Letrozole | Letrozole | 25 | suppressed |
| Hydroxyurea | Hydroxyurea | 21 | suppressed |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 20 | suppressed |
| Ondansetron Hcl | Ondansetron Hcl | 20 | 11 |
| Duloxetine Hcl | Duloxetine Hcl | 19 | suppressed |
| Ondansetron Odt | Ondansetron | 19 | suppressed |
| Pegasys | Peginterferon Alfa-2a | 19 | suppressed |
| Warfarin Sodium | Warfarin Sodium | 19 | suppressed |
| Furosemide | Furosemide | 18 | suppressed |
| Lactated Ringers | Ringer's Solution,lactated | 18 | suppressed |
| Diphenoxylate-Atropine | Diphenoxylate Hcl/Atropine | 17 | suppressed |
| Allopurinol | Allopurinol | 16 | suppressed |
| Methadone Hcl | Methadone Hcl | 16 | suppressed |
| Nystatin | Nystatin | 16 | suppressed |
| Prochlorperazine Maleate | Prochlorperazine Maleate | 16 | suppressed |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 15 | suppressed |
| Calquence | Acalabrutinib Maleate | 14 | suppressed |
| Doxycycline Hyclate | Doxycycline Hyclate | 14 | suppressed |
| Exemestane | Exemestane | 14 | suppressed |
| Hydromorphone Hcl | Hydromorphone Hcl | 14 | suppressed |
| Levothyroxine Sodium | Levothyroxine Sodium | 14 | suppressed |
| Promacta | Eltrombopag Olamine | 14 | suppressed |
| Dexamethasone | Dexamethasone | 13 | suppressed |
| Lorazepam | Lorazepam | 13 | suppressed |
| Morphine Sulfate Er | Morphine Sulfate | 13 | suppressed |
| Revlimid | Lenalidomide | 13 | suppressed |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 12 | suppressed |
| Lamivudine Hbv | Lamivudine | 12 | suppressed |
| Zarxio | Filgrastim-Sndz | 12 | suppressed |
| Alprazolam | Alprazolam | 11 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 11 | suppressed |
| Enoxaparin Sodium | Enoxaparin Sodium | 11 | suppressed |
| Pantoprazole Sodium | Pantoprazole Sodium | 11 | suppressed |
| Xermelo | Telotristat Etiprate | 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 | $773.87 · 33 records | Novartis Pharmaceuticals Corporation | ADCETRIS, BESREMI, BRUKINSA, DARZALEX, DATROWAY, ELREXFIO, IBRANCE, INQOVI, JAYPIRCA, KEYTRUDA, KEYTRUDA QLEX, KISQALI, LONSURF, LYNPARZA, Nubeqa, OPDIVO, RYBREVANT, TAGRISSO, TALVEY, TUKYSA, VERZENIO, Venclexta | 6 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Brukinsa play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with AstraZeneca Pharmaceuticals LP?
- 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