Payment overview · 2025
General Payments
$643.76
41 reported records · 14 companies
Healthcare provider profile · identity verified
Matthew Bruce Chamberlain, M.D.
Allopathic & Osteopathic Physicians|Family Medicine · BATON ROUGE, LA · NPI 1831172980
Verified facts
What the public records show
CMS Open Payments records show Matthew Bruce Chamberlain, M.D. received $643.76 in general payments during 2025 across 41 reported records.
Lilly USA, LLC accounted for 25.6% 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, Ozempic, Trintellix.
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 26 claims for Jardiance by this doctor in 2024.
Novo Nordisk 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 Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Ozempic by this doctor in 2024.
Takeda Pharmaceuticals U.S.A., 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 TRINTELLIX as an associated drug or biological on 37075 records involving 14402 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Trintellix 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 |
|---|---|---|---|---|---|
| Lilly USA, LLC | Unresolved — no canonical attribution shown | $164.48 | 25.6% | 8 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $151.56 | 23.5% | 13 | 2025 |
| Novo Nordisk Inc | Unresolved — no canonical attribution shown | $49.09 | 7.6% | 3 | 2025 |
| Exact Sciences Corporation | Unresolved — no canonical attribution shown | $42.77 | 6.6% | 3 | 2025 |
| PFIZER INC. | Unresolved — no canonical attribution shown | $37.25 | 5.8% | 2 | 2025 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | Unresolved — no canonical attribution shown | $33.72 | 5.2% | 2 | 2025 |
| Phathom Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $23.17 | 3.6% | 3 | 2025 |
| Kowa Pharmaceuticals America, Inc. | Unresolved — no canonical attribution shown | $22.15 | 3.4% | 1 | 2025 |
| GlaxoSmithKline, LLC. | Unresolved — no canonical attribution shown | $22.11 | 3.4% | 1 | 2025 |
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $21.64 | 3.4% | 1 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $21.57 | 3.4% | 1 | 2025 |
| Bayer Healthcare Pharmaceuticals Inc. | Unresolved — no canonical attribution shown | $20.71 | 3.2% | 1 | 2025 |
| Antares Pharma, Inc. | Unresolved — no canonical attribution shown | $19.00 | 3.0% | 1 | 2025 |
| Takeda Pharmaceuticals U.S.A., Inc. | Unresolved — no canonical attribution shown | $14.54 | 2.3% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $643.76 | 41 |
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 |
|---|---|---|---|---|---|
| MOUNJARO Normalized: mounjaro |
Drug | Lilly USA, LLC | $107.95 | 5 | 2025 |
Source payment records
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| UBRELVY Normalized: ubrelvy |
Drug | ABBVIE INC. | $96.78 | 9 | 2025 |
Source payment records
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| QULIPTA Normalized: qulipta |
Drug | ABBVIE INC. | $76.62 | 7 | 2025 |
Source payment records
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| ZEPBOUND Normalized: zepbound |
Drug | Lilly USA, LLC | $61.79 | 3 | 2025 |
Source payment records
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| JARDIANCE Normalized: jardiance |
Drug | Lilly USA, LLC | $56.53 | 3 | 2025 |
Source payment records
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| VRAYLAR Normalized: vraylar |
Drug | ABBVIE INC. | $54.78 | 4 | 2025 |
Source payment records
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| XIFAXAN Normalized: xifaxan |
Drug | Salix Pharmaceuticals, a division of Bausch Health US, LLC | $33.72 | 2 | 2025 |
Source payment records
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| Ozempic Normalized: ozempic |
Drug | Novo Nordisk Inc | $33.68 | 2 | 2025 |
Source payment records
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| Rybelsus Normalized: rybelsus |
Drug | Novo Nordisk Inc | $33.68 | 2 | 2025 |
Source payment records
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| The Cologuard Plus Collection Kit Normalized: the cologuard plus collection kit |
Device | Exact Sciences Corporation | $27.67 | 2 | 2025 |
Source payment records
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| VOQUEZNA Normalized: voquezna |
Drug | Phathom Pharmaceuticals, Inc. | $23.17 | 3 | 2025 |
Source payment records
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| ZORYVE Normalized: zoryve |
Drug | Kowa Pharmaceuticals America, Inc. | $22.15 | 1 | 2025 |
Source payment records
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| TRELEGY ELLIPTA Normalized: trelegy ellipta |
Drug | GlaxoSmithKline, LLC. | $22.11 | 1 | 2025 |
Source payment records
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| AIRSUPRA Normalized: airsupra |
Drug | AstraZeneca Pharmaceuticals LP | $21.64 | 1 | 2025 |
Source payment records
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| KRYSTEXXA Normalized: krystexxa |
Biological | Amgen Inc. | $21.57 | 1 | 2025 |
Source payment records
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| Kerendia Normalized: kerendia |
Drug | Bayer Healthcare Pharmaceuticals Inc. | $20.71 | 1 | 2025 |
Source payment records
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| NURTEC ODT Normalized: nurtec odt |
Drug | PFIZER INC. | $19.89 | 1 | 2025 |
Source payment records
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| ZAVZPRET Normalized: zavzpret |
Drug | PFIZER INC. | $19.89 | 1 | 2025 |
Source payment records
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| XYOSTED Normalized: xyosted |
Drug | Antares Pharma, Inc. | $19.00 | 1 | 2025 |
Source payment records
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| ABRYSVO Normalized: abrysvo |
Biological | PFIZER INC. | $17.36 | 1 | 2025 |
Source payment records
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| COMIRNATY Normalized: comirnaty |
Biological | PFIZER INC. | $17.36 | 1 | 2025 |
Source payment records
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| PREVNAR 20 Normalized: prevnar 20 |
Biological | PFIZER INC. | $17.36 | 1 | 2025 |
Source payment records
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| Wegovy Normalized: wegovy |
Drug | Novo Nordisk Inc | $15.41 | 1 | 2025 |
Source payment records
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| Cologuard Collection Kit Normalized: cologuard collection kit |
Device | Exact Sciences Corporation | $15.10 | 1 | 2025 |
Source payment records
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| TRINTELLIX Normalized: trintellix |
Drug | Takeda Pharmaceuticals U.S.A., Inc. | $14.54 | 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 |
|---|---|---|---|---|---|---|
| JARDIANCE jardiance |
2025 | Jardiance | 2024 | 26 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| Ozempic ozempic |
2025 | Ozempic | 2024 | 18 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| TRINTELLIX trintellix |
2025 | Trintellix | 2024 | 21 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 |
|---|---|---|---|---|---|---|
| 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 |
26 | suppressed by CMS |
| Novo Nordisk Inc Exact reporting entity; no affiliate inference |
2025 | Ozempic open payments reported associated product |
CMS Open Payments — General Payments 261625 supporting records · 77793 recipient NPIs · example record 1188130076 |
Ozempic · 2024 Exact normalized brand match · 1 Part D row |
18 | suppressed by CMS |
| Takeda Pharmaceuticals U.S.A., Inc. Exact reporting entity; no affiliate inference |
2025 | TRINTELLIX open payments reported associated product |
CMS Open Payments — General Payments 37075 supporting records · 14402 recipient NPIs · example record 1223616266 |
Trintellix · 2024 Exact normalized brand match · 1 Part D row |
21 | 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
| Brand | Generic | Claims | Beneficiaries |
|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 90 | 22 |
| Pantoprazole Sodium | Pantoprazole Sodium | 87 | 21 |
| Levothyroxine Sodium | Levothyroxine Sodium | 82 | 17 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 73 | 24 |
| Clonazepam | Clonazepam | 61 | suppressed |
| Prednisone | Prednisone | 57 | 33 |
| Zolpidem Tartrate | Zolpidem Tartrate | 53 | suppressed |
| Metformin Hcl Er | Metformin Hcl | 52 | 14 |
| Alprazolam | Alprazolam | 48 | suppressed |
| Losartan Potassium | Losartan Potassium | 44 | 12 |
| Amlodipine Besylate | Amlodipine Besylate | 40 | 12 |
| Lisinopril | Lisinopril | 38 | 12 |
| Baclofen | Baclofen | 37 | suppressed |
| Dextroamphetamine-Amphetamine | Dextroamphetamine/Amphetamine | 37 | suppressed |
| Celecoxib | Celecoxib | 35 | suppressed |
| Gabapentin | Gabapentin | 35 | suppressed |
| Amoxicillin | Amoxicillin | 32 | 21 |
| Metoprolol Succinate | Metoprolol Succinate | 32 | suppressed |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 31 | suppressed |
| Bupropion Xl | Bupropion Hcl | 29 | suppressed |
| Meloxicam | Meloxicam | 28 | suppressed |
| Escitalopram Oxalate | Escitalopram Oxalate | 27 | suppressed |
| Jardiance | Empagliflozin | 26 | suppressed |
| Azithromycin | Azithromycin | 25 | 19 |
| Eszopiclone | Eszopiclone | 25 | suppressed |
| Tamsulosin Hcl | Tamsulosin Hcl | 24 | suppressed |
| Tradjenta | Linagliptin | 23 | suppressed |
| Buspirone Hcl | Buspirone Hcl | 22 | suppressed |
| Duloxetine Hcl | Duloxetine Hcl | 22 | suppressed |
| Furosemide | Furosemide | 22 | suppressed |
| Clotrimazole-Betamethasone | Clotrimazole/Betamethasone Dip | 21 | suppressed |
| Hydrochlorothiazide | Hydrochlorothiazide | 21 | suppressed |
| Ondansetron Hcl | Ondansetron Hcl | 21 | suppressed |
| Ondansetron Odt | Ondansetron | 21 | 12 |
| Sumatriptan Succinate | Sumatriptan Succinate | 21 | suppressed |
| Trintellix | Vortioxetine Hydrobromide | 21 | suppressed |
| Tramadol Hcl | Tramadol Hcl | 20 | suppressed |
| Fluticasone Propionate | Fluticasone Propionate | 18 | suppressed |
| Ozempic | Semaglutide | 18 | suppressed |
| Promethazine Hcl | Promethazine Hcl | 18 | suppressed |
| Simvastatin | Simvastatin | 18 | suppressed |
| Butalb-Acetaminoph-Caff-Codein | Butalbit/Acetamin/Caff/Codeine | 17 | suppressed |
| Clopidogrel | Clopidogrel Bisulfate | 17 | suppressed |
| Azelastine Hcl | Azelastine Hcl | 16 | suppressed |
| Methocarbamol | Methocarbamol | 16 | suppressed |
| Omeprazole | Omeprazole | 16 | suppressed |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 16 | suppressed |
| Trazodone Hcl | Trazodone Hcl | 16 | suppressed |
| Tresiba Flextouch U-200 | Insulin Degludec | 16 | suppressed |
| Levocetirizine Dihydrochloride | Levocetirizine Dihydrochloride | 15 | suppressed |
| Metformin Hcl | Metformin Hcl | 15 | suppressed |
| Vascepa | Icosapent Ethyl | 15 | suppressed |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 14 | suppressed |
| Irbesartan | Irbesartan | 14 | suppressed |
| Levofloxacin | Levofloxacin | 14 | suppressed |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 14 | suppressed |
| Pravastatin Sodium | Pravastatin Sodium | 14 | suppressed |
| Allopurinol | Allopurinol | 13 | suppressed |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 13 | suppressed |
| Montelukast Sodium | Montelukast Sodium | 13 | suppressed |
| Oxycodone Hcl | Oxycodone Hcl | 13 | suppressed |
| Xarelto | Rivaroxaban | 13 | suppressed |
| Famotidine | Famotidine | 12 | suppressed |
| Fenofibrate | Fenofibrate | 12 | suppressed |
| Metoprolol Tartrate | Metoprolol Tartrate | 12 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 12 | suppressed |
| Sertraline Hcl | Sertraline Hcl | 12 | suppressed |
| Breo Ellipta | Fluticasone/Vilanterol | 11 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 11 | suppressed |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 11 | suppressed |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 11 | suppressed |
| Icosapent Ethyl | Icosapent Ethyl | 11 | suppressed |
| Nebivolol Hcl | Nebivolol Hcl | 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 | $643.76 · 41 records | Lilly USA, LLC | ABRYSVO, AIRSUPRA, COMIRNATY, Cologuard Collection Kit, JARDIANCE, KRYSTEXXA, Kerendia, MOUNJARO, NURTEC ODT, Ozempic, PREVNAR 20, QULIPTA, Rybelsus, TRELEGY ELLIPTA, TRINTELLIX, The Cologuard Plus Collection Kit, UBRELVY, VOQUEZNA, VRAYLAR, Wegovy, XIFAXAN, XYOSTED, ZAVZPRET, ZEPBOUND, ZORYVE | 3 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Jardiance play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with Lilly USA, LLC?
- 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