Payment overview · 2025
General Payments
$837.23
24 reported records · 9 companies
Healthcare provider profile · identity verified
Casey Chambers
Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health · GREENLAWN, NY · NPI 1770026601
Verified facts
What the public records show
CMS Open Payments records show Casey Chambers received $837.23 in general payments during 2025 across 24 reported records.
Astellas Pharma US Inc accounted for 39.8% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 11 associated products.
Astellas Pharma US 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 11345 records involving 5418 distinct recipient NPIs. Public Medicare Part D data also shows 60 claims for Xtandi 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 |
|---|---|---|---|---|---|
| Astellas Pharma US Inc | Unresolved — no canonical attribution shown | $333.15 | 39.8% | 4 | 2025 |
| Novartis Pharmaceuticals Corporation | Unresolved — no canonical attribution shown | $235.22 | 28.1% | 12 | 2025 |
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $122.19 | 14.6% | 1 | 2025 |
| Adaptive Biotechnologies Corporation | Unresolved — no canonical attribution shown | $45.10 | 5.4% | 2 | 2025 |
| SOBI, INC | Unresolved — no canonical attribution shown | $25.52 | 3.0% | 1 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $20.37 | 2.4% | 1 | 2025 |
| GlaxoSmithKline, LLC. | Unresolved — no canonical attribution shown | $19.25 | 2.3% | 1 | 2025 |
| EMD Serono, Inc. | Unresolved — no canonical attribution shown | $18.36 | 2.2% | 1 | 2025 |
| TAIHO ONCOLOGY, INC. | Unresolved — no canonical attribution shown | $18.07 | 2.2% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $657.25 | 22 |
| Education | $179.98 | 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 | $235.22 | 12 | 2025 |
Source payment records
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| DATROWAY Normalized: datroway |
Biological | AstraZeneca Pharmaceuticals LP | $122.19 | 1 | 2025 |
Source payment records
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| Padcev Normalized: padcev |
Drug | Astellas Pharma US Inc | $121.84 | 1 | 2025 |
Source payment records
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| clonoSEQ Normalized: clonoseq |
Device | Adaptive Biotechnologies Corporation | $45.10 | 2 | 2025 |
Source payment records
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| Cresemba Normalized: cresemba |
Drug | Astellas Pharma US Inc | $31.33 | 1 | 2025 |
Source payment records
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| Vonjo Normalized: vonjo |
Drug | SOBI, INC | $25.52 | 1 | 2025 |
Source payment records
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| CREON Normalized: creon |
Drug | ABBVIE INC. | $20.37 | 1 | 2025 |
Source payment records
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| JEMPERLI Normalized: jemperli |
Biological | GlaxoSmithKline, LLC. | $19.25 | 1 | 2025 |
Source payment records
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| ZEJULA Normalized: zejula |
Drug | GlaxoSmithKline, LLC. | $19.25 | 1 | 2025 |
Source payment records
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| INQOVI Normalized: inqovi |
Drug | TAIHO ONCOLOGY, INC. | $18.07 | 1 | 2025 |
Source payment records
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| LONSURF Normalized: lonsurf |
Drug | TAIHO ONCOLOGY, INC. | $18.07 | 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
No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.
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 |
|---|---|---|---|---|---|---|
| Astellas Pharma US Inc Exact reporting entity; no affiliate inference |
2025 | Xtandi open payments reported associated product |
CMS Open Payments — General Payments 11345 supporting records · 5418 recipient NPIs · example record 1238560686 |
Xtandi · 2024 Exact normalized brand match · 1 Part D row |
60 | 11 |
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 |
|---|---|---|---|
| Xtandi | Enzalutamide | 60 | 11 |
| Prednisone | Prednisone | 54 | 23 |
| Levothyroxine Sodium | Levothyroxine Sodium | 45 | 13 |
| Cabometyx | Cabozantinib S-Malate | 34 | suppressed |
| Gabapentin | Gabapentin | 32 | suppressed |
| Eliquis | Apixaban | 31 | suppressed |
| Letrozole | Letrozole | 29 | 14 |
| Dexamethasone | Dexamethasone | 28 | 12 |
| Lenalidomide | Lenalidomide | 28 | 13 |
| Zolpidem Tartrate | Zolpidem Tartrate | 22 | suppressed |
| Famotidine | Famotidine | 20 | suppressed |
| Hydroxyurea | Hydroxyurea | 17 | suppressed |
| Anastrozole | Anastrozole | 15 | suppressed |
| Ondansetron Hcl | Ondansetron Hcl | 15 | suppressed |
| Prochlorperazine Maleate | Prochlorperazine Maleate | 13 | 12 |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 13 | suppressed |
| Xarelto | Rivaroxaban | 13 | suppressed |
| Abiraterone Acetate | Abiraterone Acetate | 11 | suppressed |
| Orgovyx | Relugolix | 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 | $837.23 · 24 records | Astellas Pharma US Inc | CREON, Cresemba, DATROWAY, INQOVI, JEMPERLI, KISQALI, LONSURF, Padcev, Vonjo, ZEJULA, clonoSEQ | 1 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- How do you evaluate evidence when you have a financial relationship with Astellas Pharma US 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