Payment overview · 2025
General Payments
$85.47
4 reported records · 3 companies
Healthcare provider profile · identity verified
Sydney X Chen, M.D.
Allopathic & Osteopathic Physicians|Internal Medicine · MATAWAN, NJ · NPI 1992035315
Verified facts
What the public records show
CMS Open Payments records show Sydney X Chen, M.D. received $85.47 in general payments during 2025 across 4 reported records.
Sumitomo Pharma America, Inc. accounted for 45.7% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 4 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Gemtesa.
Sumitomo Pharma America, 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 GEMTESA as an associated drug or biological on 61692 records involving 22152 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Gemtesa 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 |
|---|---|---|---|---|---|
| Sumitomo Pharma America, Inc. | Unresolved — no canonical attribution shown | $39.03 | 45.7% | 2 | 2025 |
| Merck Sharp & Dohme LLC | Unresolved — no canonical attribution shown | $23.50 | 27.5% | 1 | 2025 |
| Astellas Pharma US Inc | Unresolved — no canonical attribution shown | $22.94 | 26.8% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $85.47 | 4 |
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 |
|---|---|---|---|---|---|
| GEMTESA Normalized: gemtesa |
Drug | Sumitomo Pharma America, Inc. | $39.03 | 2 | 2025 |
Source payment records
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| KEYTRUDA Normalized: keytruda |
Biological | Merck Sharp & Dohme LLC | $23.50 | 1 | 2025 |
Source payment records
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| LYNPARZA Normalized: lynparza |
Biological | Merck Sharp & Dohme LLC | $23.50 | 1 | 2025 |
Source payment records
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| Veozah Normalized: veozah |
Drug | Astellas Pharma US Inc | $22.94 | 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 |
|---|---|---|---|---|---|---|
| GEMTESA gemtesa |
2025 | Gemtesa | 2024 | 17 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 |
|---|---|---|---|---|---|---|
| Sumitomo Pharma America, Inc. Exact reporting entity; no affiliate inference |
2025 | GEMTESA open payments reported associated product |
CMS Open Payments — General Payments 61692 supporting records · 22152 recipient NPIs · example record 1176593503 |
Gemtesa · 2024 Exact normalized brand match · 1 Part D row |
17 | 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 |
|---|---|---|---|
| Amlodipine Besylate | Amlodipine Besylate | 431 | 105 |
| Atorvastatin Calcium | Atorvastatin Calcium | 395 | 111 |
| Levothyroxine Sodium | Levothyroxine Sodium | 293 | 57 |
| Losartan Potassium | Losartan Potassium | 242 | 59 |
| Metoprolol Succinate | Metoprolol Succinate | 216 | 53 |
| Famotidine | Famotidine | 185 | 51 |
| Metformin Hcl | Metformin Hcl | 184 | 41 |
| Simvastatin | Simvastatin | 170 | 47 |
| Furosemide | Furosemide | 155 | 28 |
| Eliquis | Apixaban | 145 | 22 |
| Metoprolol Tartrate | Metoprolol Tartrate | 124 | 32 |
| Hydrochlorothiazide | Hydrochlorothiazide | 123 | 29 |
| Zolpidem Tartrate | Zolpidem Tartrate | 123 | 20 |
| Donepezil Hcl | Donepezil Hcl | 118 | 21 |
| Mirtazapine | Mirtazapine | 112 | 16 |
| Memantine Hcl | Memantine Hcl | 111 | 16 |
| Omeprazole | Omeprazole | 110 | 39 |
| Pantoprazole Sodium | Pantoprazole Sodium | 107 | 32 |
| Montelukast Sodium | Montelukast Sodium | 106 | 27 |
| Divalproex Sodium | Divalproex Sodium | 102 | 11 |
| Nystatin | Nystatin | 90 | 40 |
| Tamsulosin Hcl | Tamsulosin Hcl | 89 | 23 |
| Gabapentin | Gabapentin | 84 | 22 |
| Metformin Hcl Er | Metformin Hcl | 82 | 25 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 79 | 22 |
| Jardiance | Empagliflozin | 74 | 15 |
| Lisinopril | Lisinopril | 73 | 20 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 72 | 26 |
| Ozempic | Semaglutide | 69 | 11 |
| Trazodone Hcl | Trazodone Hcl | 63 | 19 |
| Fenofibrate | Fenofibrate Nanocrystallized | 62 | 16 |
| Levofloxacin | Levofloxacin | 62 | 48 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 61 | 49 |
| Glipizide Er | Glipizide | 61 | 15 |
| Sertraline Hcl | Sertraline Hcl | 56 | 19 |
| Fluticasone Propionate | Fluticasone Propionate | 55 | 22 |
| Duloxetine Hcl | Duloxetine Hcl | 53 | suppressed |
| Glimepiride | Glimepiride | 53 | 16 |
| Azithromycin | Azithromycin | 52 | 36 |
| Tramadol Hcl | Tramadol Hcl | 52 | 13 |
| Potassium Chloride | Potassium Chloride | 49 | suppressed |
| Januvia | Sitagliptin Phosphate | 47 | 11 |
| Mounjaro | Tirzepatide | 46 | suppressed |
| Ofloxacin | Ofloxacin | 45 | 39 |
| Escitalopram Oxalate | Escitalopram Oxalate | 43 | 12 |
| Ezetimibe | Ezetimibe | 41 | 12 |
| Buspirone Hcl | Buspirone Hcl | 39 | suppressed |
| Lorazepam | Lorazepam | 38 | 12 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 38 | 31 |
| Enulose | Lactulose | 37 | suppressed |
| Xarelto | Rivaroxaban | 37 | suppressed |
| Levetiracetam | Levetiracetam | 36 | suppressed |
| Sps | Sodium Polystyrene Sulfon/Sorb | 36 | 15 |
| Valsartan | Valsartan | 36 | 12 |
| Enalapril Maleate | Enalapril Maleate | 35 | suppressed |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 35 | suppressed |
| Procrit | Epoetin Alfa | 35 | suppressed |
| Atenolol | Atenolol | 34 | suppressed |
| Austedo | Deutetrabenazine | 34 | suppressed |
| Alendronate Sodium | Alendronate Sodium | 33 | suppressed |
| Allopurinol | Allopurinol | 33 | suppressed |
| Finasteride | Finasteride | 33 | suppressed |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 32 | 24 |
| Nifedipine Er | Nifedipine | 32 | suppressed |
| Pravastatin Sodium | Pravastatin Sodium | 32 | suppressed |
| Rybelsus | Semaglutide | 31 | suppressed |
| Synthroid | Levothyroxine Sodium | 31 | suppressed |
| Trelegy Ellipta | Fluticasone/Umeclidin/Vilanter | 31 | suppressed |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 31 | 16 |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 30 | suppressed |
| Clopidogrel | Clopidogrel Bisulfate | 28 | suppressed |
| Alprazolam | Alprazolam | 27 | 11 |
| Edarbi | Azilsartan Medoxomil | 26 | suppressed |
| Prednisone | Prednisone | 26 | 14 |
| Trintellix | Vortioxetine Hydrobromide | 26 | suppressed |
| Breo Ellipta | Fluticasone/Vilanterol | 24 | suppressed |
| Epogen | Epoetin Alfa | 23 | suppressed |
| Lacosamide | Lacosamide | 23 | suppressed |
| Hydrocortisone | Hydrocortisone | 22 | 12 |
| Paxlovid | Nirmatrelvir/Ritonavir | 22 | 21 |
| Tresiba Flextouch U-200 | Insulin Degludec | 22 | suppressed |
| Latanoprost | Latanoprost | 21 | suppressed |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 21 | suppressed |
| Sucralfate | Sucralfate | 21 | suppressed |
| Ibuprofen | Ibuprofen | 20 | suppressed |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 19 | suppressed |
| Baclofen | Baclofen | 18 | suppressed |
| Betamethasone Valerate | Betamethasone Valerate | 18 | suppressed |
| Clonazepam | Clonazepam | 18 | suppressed |
| Ipratropium-Albuterol | Ipratropium/Albuterol Sulfate | 18 | suppressed |
| Paroxetine Hcl | Paroxetine Hcl | 18 | suppressed |
| Pioglitazone Hcl | Pioglitazone Hcl | 18 | suppressed |
| Carvedilol | Carvedilol | 17 | suppressed |
| Gemtesa | Vibegron | 17 | suppressed |
| Mupirocin | Mupirocin | 17 | 11 |
| Glipizide | Glipizide | 16 | suppressed |
| Olmesartan-Hydrochlorothiazide | Olmesartan/Hydrochlorothiazide | 16 | suppressed |
| Amoxicillin | Amoxicillin | 15 | 12 |
| Clobetasol Propionate | Clobetasol Propionate | 15 | suppressed |
| Methotrexate | Methotrexate Sodium | 15 | suppressed |
| Bumetanide | Bumetanide | 14 | suppressed |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 14 | suppressed |
| Meloxicam | Meloxicam | 14 | suppressed |
| Nano 2nd Gen Pen Needle | Pen Needle, Diabetic | 14 | suppressed |
| Propranolol Hcl | Propranolol Hcl | 14 | suppressed |
| Xifaxan | Rifaximin | 14 | suppressed |
| Clonidine Hcl | Clonidine Hcl | 13 | suppressed |
| Lactulose | Lactulose | 13 | suppressed |
| Meclizine Hcl | Meclizine Hcl | 13 | suppressed |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 13 | suppressed |
| Ramipril | Ramipril | 13 | suppressed |
| Vascepa | Icosapent Ethyl | 13 | suppressed |
| Alcohol Prep Pads | Alcohol Antiseptic Pads | 12 | suppressed |
| Amiodarone Hcl | Amiodarone Hcl | 12 | suppressed |
| Citalopram Hbr | Citalopram Hydrobromide | 12 | suppressed |
| Diltiazem Hcl | Diltiazem Hcl | 12 | suppressed |
| Irbesartan | Irbesartan | 12 | suppressed |
| Naproxen | Naproxen | 12 | suppressed |
| Primidone | Primidone | 12 | suppressed |
| Prolia | Denosumab | 12 | suppressed |
| Risperidone | Risperidone | 12 | suppressed |
| Tradjenta | Linagliptin | 12 | suppressed |
| Valsartan-Hydrochlorothiazide | Valsartan/Hydrochlorothiazide | 12 | suppressed |
| Breztri Aerosphere | Budesonide/Glycopyr/Formoterol | 11 | suppressed |
| Linzess | Linaclotide | 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 | $85.47 · 4 records | Sumitomo Pharma America, Inc. | GEMTESA, KEYTRUDA, LYNPARZA, Veozah | 1 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Gemtesa play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with Sumitomo Pharma America, 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