Payment overview · 2025
General Payments
$10,889.44
55 reported records · 10 companies
Healthcare provider profile · identity verified
Sanjayanth R Chamakura, M.D.
Allopathic & Osteopathic Physicians|Internal Medicine|Interventional Cardiology · KELLER, TX · NPI 1659368728
Verified facts
What the public records show
CMS Open Payments records show Sanjayanth R Chamakura, M.D. received $10,889.44 in general payments during 2025 across 55 reported records.
Medtronic, Inc. accounted for 94.4% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 15 associated products.
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 244 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 |
|---|---|---|---|---|---|
| Medtronic, Inc. |
Medtronic, Inc. exact · evidence 2025-07-22 |
$10,276.49 | 94.4% | 41 | 2025 |
| HEARTFLOW, INC. | Unresolved — no canonical attribution shown | $182.14 | 1.7% | 2 | 2025 |
| Boston Scientific Corporation | Unresolved — no canonical attribution shown | $135.18 | 1.2% | 1 | 2025 |
| ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) | Unresolved — no canonical attribution shown | $77.72 | 0.7% | 4 | 2025 |
| ARGON MEDICAL DEVICES, INC. | Unresolved — no canonical attribution shown | $50.59 | 0.5% | 1 | 2025 |
| Alnylam Pharmaceuticals Inc. | Unresolved — no canonical attribution shown | $49.75 | 0.5% | 2 | 2025 |
| BridgeBio Pharma, Inc. | Unresolved — no canonical attribution shown | $41.26 | 0.4% | 1 | 2025 |
| E.R. Squibb & Sons, L.L.C. | Unresolved — no canonical attribution shown | $29.79 | 0.3% | 1 | 2025 |
| SCPHARMACEUTICALS INC. | Unresolved — no canonical attribution shown | $24.27 | 0.2% | 1 | 2025 |
| BIOTRONIK INC. | Unresolved — no canonical attribution shown | $22.25 | 0.2% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Travel and Lodging | $8,976.90 | 11 |
| Food and Beverage | $1,912.54 | 44 |
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 |
|---|---|---|---|---|---|
| VENASEAL Normalized: venaseal |
Device | Medtronic, Inc. | $828.80 | 7 | 2025 |
Source payment records
|
|||||
| ONYX FRONTIER Normalized: onyx frontier |
Device | Medtronic, Inc. | $229.10 | 8 | 2025 |
Source payment records
|
|||||
| SYMPLICITY G3 Normalized: symplicity g3 |
Device | Medtronic, Inc. | $210.46 | 5 | 2025 |
Source payment records
|
|||||
| FFRct Normalized: ffrct |
Device | HEARTFLOW, INC. | $182.14 | 2 | 2025 |
Source payment records
|
|||||
| HAWKONE Normalized: hawkone |
Device | Medtronic, Inc. | $181.63 | 4 | 2025 |
Source payment records
|
|||||
| AZURE XT DR MRI SURESCAN Normalized: azure xt dr mri surescan |
Device | Medtronic, Inc. | $168.22 | 1 | 2025 |
Source payment records
|
|||||
| AVVIGO Guidance System Normalized: avvigo guidance system |
Device | Boston Scientific Corporation | $135.18 | 1 | 2025 |
Source payment records
|
|||||
| LifeVest Normalized: lifevest |
Device | ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) | $77.72 | 4 | 2025 |
Source payment records
|
|||||
| CLOT MANAGEMENT Normalized: clot management |
Device | ARGON MEDICAL DEVICES, INC. | $50.59 | 1 | 2025 |
Source payment records
|
|||||
| Attruby Normalized: attruby |
Drug | BridgeBio Pharma, Inc. | $41.26 | 1 | 2025 |
Source payment records
|
|||||
| CAMZYOS Normalized: camzyos |
Drug | E.R. Squibb & Sons, L.L.C. | $29.79 | 1 | 2025 |
Source payment records
|
|||||
| ONPATTRO Normalized: onpattro |
Drug | Alnylam Pharmaceuticals Inc. | $25.08 | 1 | 2025 |
Source payment records
|
|||||
| AMVUTTRA Normalized: amvuttra |
Drug | Alnylam Pharmaceuticals Inc. | $24.67 | 1 | 2025 |
Source payment records
|
|||||
| FUROSCIX Normalized: furoscix |
Drug | SCPHARMACEUTICALS INC. | $24.27 | 1 | 2025 |
Source payment records
|
|||||
| AMVIA EDGE Normalized: amvia edge |
Device | BIOTRONIK INC. | $22.25 | 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
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 |
|---|---|---|---|---|---|---|
| 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 |
244 | 61 |
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 |
|---|---|---|---|
| Amlodipine Besylate | Amlodipine Besylate | 311 | 96 |
| Metoprolol Succinate | Metoprolol Succinate | 280 | 94 |
| Losartan Potassium | Losartan Potassium | 256 | 90 |
| Eliquis | Apixaban | 244 | 61 |
| Carvedilol | Carvedilol | 214 | 70 |
| Metoprolol Tartrate | Metoprolol Tartrate | 212 | 68 |
| Furosemide | Furosemide | 199 | 71 |
| Atorvastatin Calcium | Atorvastatin Calcium | 192 | 63 |
| Xarelto | Rivaroxaban | 167 | 45 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 116 | 41 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 101 | 36 |
| Nebivolol Hcl | Nebivolol Hcl | 94 | 29 |
| Lisinopril | Lisinopril | 93 | 37 |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 79 | 23 |
| Clopidogrel | Clopidogrel Bisulfate | 76 | 27 |
| Digoxin | Digoxin | 54 | 15 |
| Brilinta | Ticagrelor | 51 | suppressed |
| Warfarin Sodium | Warfarin Sodium | 50 | suppressed |
| Prasugrel Hcl | Prasugrel Hcl | 47 | 16 |
| Nitroglycerin | Nitroglycerin | 45 | 28 |
| Potassium Chloride | Potassium Chloride | 45 | 16 |
| Ezetimibe | Ezetimibe | 42 | 16 |
| Hydralazine Hcl | Hydralazine Hcl | 39 | 14 |
| Ranolazine Er | Ranolazine | 39 | suppressed |
| Entresto | Sacubitril/Valsartan | 36 | 11 |
| Hydrochlorothiazide | Hydrochlorothiazide | 34 | 18 |
| Atenolol | Atenolol | 32 | suppressed |
| Labetalol Hcl | Labetalol Hcl | 31 | suppressed |
| Repatha Sureclick | Evolocumab | 31 | suppressed |
| Bumetanide | Bumetanide | 23 | suppressed |
| Spironolactone | Spironolactone | 23 | suppressed |
| Clonidine Hcl | Clonidine Hcl | 21 | suppressed |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 21 | suppressed |
| Simvastatin | Simvastatin | 20 | suppressed |
| Valsartan | Valsartan | 18 | suppressed |
| Torsemide | Torsemide | 17 | suppressed |
| Nifedipine Er | Nifedipine | 16 | suppressed |
| Fenofibrate | Fenofibrate Nanocrystallized | 13 | suppressed |
| Amiodarone Hcl | Amiodarone Hcl | 12 | suppressed |
| Valsartan-Hydrochlorothiazide | Valsartan/Hydrochlorothiazide | 12 | suppressed |
| Vyndamax | Tafamidis | 12 | suppressed |
| Cilostazol | Cilostazol | 11 | suppressed |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 11 | suppressed |
| Midodrine Hcl | Midodrine Hcl | 11 | suppressed |
| Olmesartan-Hydrochlorothiazide | Olmesartan/Hydrochlorothiazide | 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 | $10,889.44 · 55 records | Medtronic, Inc. | AMVIA EDGE, AMVUTTRA, AVVIGO Guidance System, AZURE XT DR MRI SURESCAN, Attruby, CAMZYOS, CLOT MANAGEMENT, FFRct, FUROSCIX, HAWKONE, LifeVest, ONPATTRO, ONYX FRONTIER, SYMPLICITY G3, VENASEAL | 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 E.R. Squibb & Sons, L.L.C.?
- 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