Payment overview · 2025
General Payments
$255.49
2 reported records · 2 companies
Healthcare provider profile · identity verified
Russell Kl Won, M.D.
Allopathic & Osteopathic Physicians|General Practice · SAINT LOUIS, MO · NPI 1245327725
Verified facts
What the public records show
CMS Open Payments records show Russell Kl Won, M.D. received $255.49 in general payments during 2025 across 2 reported records.
Amgen Inc. accounted for 54.5% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 1 associated product.
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 |
|---|---|---|---|---|---|
| Amgen Inc. | Unresolved — no canonical attribution shown | $139.16 | 54.5% | 1 | 2025 |
| Takeda Pharmaceuticals U.S.A., Inc. | Unresolved — no canonical attribution shown | $116.33 | 45.5% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $255.49 | 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 |
|---|---|---|---|---|---|
| GLASSIA Normalized: glassia |
Biological | Takeda Pharmaceuticals U.S.A., Inc. | $116.33 | 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.
No publishable same-company prescribing overlap was found in the loaded Part D year. This does not mean the doctor never prescribed a drug reported elsewhere by a paying company.
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 | 1349 | 276 |
| Levothyroxine Sodium | Levothyroxine Sodium | 869 | 132 |
| Furosemide | Furosemide | 642 | 116 |
| Amlodipine Besylate | Amlodipine Besylate | 588 | 108 |
| Lisinopril | Lisinopril | 581 | 129 |
| Eliquis | Apixaban | 512 | 73 |
| Pantoprazole Sodium | Pantoprazole Sodium | 470 | 80 |
| Sertraline Hcl | Sertraline Hcl | 462 | 71 |
| Metoprolol Succinate | Metoprolol Succinate | 451 | 100 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 418 | 107 |
| Gabapentin | Gabapentin | 370 | 64 |
| Trazodone Hcl | Trazodone Hcl | 366 | 87 |
| Metoprolol Tartrate | Metoprolol Tartrate | 358 | 56 |
| Tamsulosin Hcl | Tamsulosin Hcl | 339 | 66 |
| Losartan Potassium | Losartan Potassium | 312 | 60 |
| Donepezil Hcl | Donepezil Hcl | 297 | 45 |
| Memantine Hcl | Memantine Hcl | 277 | 38 |
| Mirtazapine | Mirtazapine | 275 | 50 |
| Allopurinol | Allopurinol | 264 | 55 |
| Potassium Chloride | Potassium Chloride | 255 | 51 |
| Escitalopram Oxalate | Escitalopram Oxalate | 249 | 41 |
| Clopidogrel | Clopidogrel Bisulfate | 243 | 42 |
| Omeprazole | Omeprazole | 241 | 61 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 239 | 41 |
| Metformin Hcl | Metformin Hcl | 238 | 55 |
| Carvedilol | Carvedilol | 224 | 59 |
| Famotidine | Famotidine | 221 | 40 |
| Autoshield Duo Pen Needle | Pen Needle,dual Safety,diabetc | 218 | 18 |
| Tramadol Hcl | Tramadol Hcl | 212 | 50 |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 205 | 62 |
| Meloxicam | Meloxicam | 189 | 55 |
| Simvastatin | Simvastatin | 183 | 39 |
| Torsemide | Torsemide | 170 | 25 |
| Citalopram Hbr | Citalopram Hydrobromide | 169 | 30 |
| Duloxetine Hcl | Duloxetine Hcl | 152 | 28 |
| Montelukast Sodium | Montelukast Sodium | 144 | 28 |
| Buspirone Hcl | Buspirone Hcl | 139 | 26 |
| Alendronate Sodium | Alendronate Sodium | 136 | 28 |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 129 | 22 |
| Quetiapine Fumarate | Quetiapine Fumarate | 126 | 28 |
| Ezetimibe | Ezetimibe | 125 | 39 |
| Atenolol | Atenolol | 112 | 20 |
| Hydralazine Hcl | Hydralazine Hcl | 110 | 20 |
| Jardiance | Empagliflozin | 108 | suppressed |
| Divalproex Sodium | Divalproex Sodium | 97 | 17 |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 97 | 19 |
| Finasteride | Finasteride | 96 | 24 |
| Latanoprost | Latanoprost | 96 | 18 |
| Fenofibrate | Fenofibrate | 95 | 29 |
| Spironolactone | Spironolactone | 94 | 26 |
| Entresto | Sacubitril/Valsartan | 93 | 11 |
| Januvia | Sitagliptin Phosphate | 89 | 11 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 88 | 26 |
| Myrbetriq | Mirabegron | 87 | 11 |
| Amiodarone Hcl | Amiodarone Hcl | 84 | 11 |
| Pregabalin | Pregabalin | 84 | 17 |
| Bupropion Xl | Bupropion Hcl | 83 | 12 |
| Arexvy | Rsvpref3 Antigen/As01e/Pf | 81 | 81 |
| Levetiracetam | Levetiracetam | 81 | 16 |
| Metformin Hcl Er | Metformin Hcl | 81 | 23 |
| Alprazolam | Alprazolam | 80 | 25 |
| Fluticasone Propionate | Fluticasone Propionate | 80 | 24 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 74 | 35 |
| Glimepiride | Glimepiride | 74 | 25 |
| Hydrochlorothiazide | Hydrochlorothiazide | 71 | 20 |
| Celecoxib | Celecoxib | 64 | 19 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 64 | 16 |
| Xarelto | Rivaroxaban | 64 | 11 |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 63 | 12 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 61 | 12 |
| Prednisone | Prednisone | 61 | 20 |
| Pramipexole Dihydrochloride | Pramipexole Di-Hcl | 58 | suppressed |
| Pentoxifylline | Pentoxifylline | 56 | suppressed |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 56 | 27 |
| Doxycycline Hyclate | Doxycycline Hyclate | 55 | 33 |
| Lorazepam | Lorazepam | 54 | 22 |
| Dicyclomine Hcl | Dicyclomine Hcl | 53 | suppressed |
| Pravastatin Sodium | Pravastatin Sodium | 53 | suppressed |
| Sucralfate | Sucralfate | 53 | suppressed |
| Glipizide | Glipizide | 52 | suppressed |
| Triamterene-Hydrochlorothiazid | Triamterene/Hydrochlorothiazid | 49 | 13 |
| Baclofen | Baclofen | 48 | 14 |
| Lovastatin | Lovastatin | 48 | 11 |
| Pioglitazone Hcl | Pioglitazone Hcl | 47 | 12 |
| Zonisamide | Zonisamide | 47 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 46 | suppressed |
| Bethanechol Chloride | Bethanechol Chloride | 45 | suppressed |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 45 | 37 |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 43 | 16 |
| Insulin Aspart Flexpen | Insulin Aspart | 43 | 12 |
| Azithromycin | Azithromycin | 42 | 36 |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 42 | 14 |
| Fluoxetine Hcl | Fluoxetine Hcl | 42 | suppressed |
| Chlorthalidone | Chlorthalidone | 41 | suppressed |
| Nystatin | Nystatin | 40 | 27 |
| Cephalexin | Cephalexin | 39 | 30 |
| Ozempic | Semaglutide | 39 | suppressed |
| Tradjenta | Linagliptin | 39 | suppressed |
| Anoro Ellipta | Umeclidinium Brm/Vilanterol Tr | 38 | suppressed |
| Bupropion Hcl Sr | Bupropion Hcl | 38 | suppressed |
| Midodrine Hcl | Midodrine Hcl | 38 | suppressed |
| Vitamin D2 | Ergocalciferol (Vitamin D2) | 38 | 16 |
| Warfarin Sodium | Warfarin Sodium | 38 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 36 | 15 |
| Mupirocin | Mupirocin | 36 | 11 |
| Ipratropium-Albuterol | Ipratropium/Albuterol Sulfate | 35 | 21 |
| Naproxen | Naproxen | 35 | suppressed |
| Ondansetron Odt | Ondansetron | 35 | 21 |
| Alfuzosin Hcl Er | Alfuzosin Hcl | 34 | suppressed |
| Fludrocortisone Acetate | Fludrocortisone Acetate | 34 | suppressed |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 34 | suppressed |
| Oxcarbazepine | Oxcarbazepine | 34 | suppressed |
| Doxazosin Mesylate | Doxazosin Mesylate | 33 | suppressed |
| Farxiga | Dapagliflozin Propanediol | 33 | suppressed |
| Semglee (Yfgn) Pen | Insulin Glargine-Yfgn | 32 | suppressed |
| Diltiazem 24hr Er | Diltiazem Hcl | 31 | suppressed |
| Insulin Lispro Kwikpen U-100 | Insulin Lispro | 31 | suppressed |
| Enalapril Maleate | Enalapril Maleate | 30 | suppressed |
| Acetaminophen-Codeine | Acetaminophen With Codeine | 29 | suppressed |
| Paroxetine Hcl | Paroxetine Hcl | 29 | suppressed |
| Santyl | Collagenase Clostridium Hist. | 29 | 18 |
| Synthroid | Levothyroxine Sodium | 29 | suppressed |
| Amoxicillin | Amoxicillin | 28 | 23 |
| Methotrexate | Methotrexate Sodium | 28 | suppressed |
| Folic Acid | Folic Acid | 27 | suppressed |
| Lactulose | Lactulose | 27 | suppressed |
| Linzess | Linaclotide | 27 | suppressed |
| Risperidone | Risperidone | 27 | suppressed |
| Breo Ellipta | Fluticasone/Vilanterol | 26 | suppressed |
| Brilinta | Ticagrelor | 26 | suppressed |
| Clonazepam | Clonazepam | 26 | suppressed |
| Benzonatate | Benzonatate | 25 | suppressed |
| Gemtesa | Vibegron | 25 | suppressed |
| Lansoprazole | Lansoprazole | 25 | suppressed |
| Meropenem | Meropenem | 25 | suppressed |
| Nitroglycerin | Nitroglycerin | 25 | 15 |
| Wixela Inhub | Fluticasone Propion/Salmeterol | 25 | 12 |
| Zolpidem Tartrate | Zolpidem Tartrate | 25 | suppressed |
| Lithium Carbonate | Lithium Carbonate | 24 | suppressed |
| Solifenacin Succinate | Solifenacin Succinate | 24 | suppressed |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 24 | suppressed |
| Brimonidine Tartrate | Brimonidine Tartrate | 23 | suppressed |
| Carbamazepine Er | Carbamazepine | 23 | suppressed |
| Travoprost | Travoprost | 23 | suppressed |
| Trelegy Ellipta | Fluticasone/Umeclidin/Vilanter | 23 | suppressed |
| Gvoke Pfs 1-Pack Syringe | Glucagon | 22 | suppressed |
| Memantine Hcl Er | Memantine Hcl | 22 | suppressed |
| Nortriptyline Hcl | Nortriptyline Hcl | 22 | suppressed |
| Oxycodone Hcl | Oxycodone Hcl | 22 | suppressed |
| Mresvia | Rsv Vaccine, Pref, Mrna/Pf | 21 | 21 |
| Nyamyc | Nystatin | 21 | suppressed |
| Rivastigmine | Rivastigmine Tartrate | 21 | suppressed |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 20 | 16 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 20 | suppressed |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 20 | suppressed |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 20 | suppressed |
| Ketoconazole | Ketoconazole | 20 | suppressed |
| Levocetirizine Dihydrochloride | Levocetirizine Dihydrochloride | 20 | suppressed |
| Sulfasalazine | Sulfasalazine | 20 | suppressed |
| Gemfibrozil | Gemfibrozil | 19 | suppressed |
| Novolog Flexpen | Insulin Aspart | 19 | suppressed |
| Anastrozole | Anastrozole | 18 | suppressed |
| Diazepam | Diazepam | 18 | suppressed |
| Digoxin | Digoxin | 18 | suppressed |
| Fenofibrate | Fenofibrate,micronized | 18 | suppressed |
| Fluconazole | Fluconazole | 18 | suppressed |
| Tramadol Hcl-Acetaminophen | Tramadol Hcl/Acetaminophen | 18 | suppressed |
| Vancomycin Hcl | Vancomycin Hcl | 18 | suppressed |
| Azelastine Hcl | Azelastine Hcl | 17 | suppressed |
| Ceftriaxone | Ceftriaxone Sodium | 17 | 13 |
| Labetalol Hcl | Labetalol Hcl | 17 | suppressed |
| Lumigan | Bimatoprost | 17 | suppressed |
| Olanzapine | Olanzapine | 17 | suppressed |
| Trulicity | Dulaglutide | 17 | suppressed |
| Atropine Sulfate | Atropine Sulfate | 16 | 13 |
| Humalog Kwikpen U-100 | Insulin Lispro | 16 | suppressed |
| Olmesartan-Hydrochlorothiazide | Olmesartan/Hydrochlorothiazide | 16 | suppressed |
| Prazosin Hcl | Prazosin Hcl | 16 | suppressed |
| Propranolol Hcl | Propranolol Hcl | 16 | suppressed |
| Pyridostigmine Bromide | Pyridostigmine Bromide | 16 | suppressed |
| Ramipril | Ramipril | 16 | suppressed |
| Bisoprolol-Hydrochlorothiazide | Bisoprolol/Hydrochlorothiazide | 15 | suppressed |
| Lidocaine Hcl | Lidocaine Hcl/Pf | 15 | 11 |
| Oseltamivir Phosphate | Oseltamivir Phosphate | 15 | 14 |
| Toujeo Solostar | Insulin Glargine,hum.Rec.Anlog | 15 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 14 | suppressed |
| Bumetanide | Bumetanide | 14 | suppressed |
| Fluvoxamine Maleate | Fluvoxamine Maleate | 14 | suppressed |
| Mesalamine Er | Mesalamine | 14 | suppressed |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 14 | suppressed |
| Nystop | Nystatin | 14 | suppressed |
| Selegiline Hcl | Selegiline Hcl | 14 | suppressed |
| Atenolol-Chlorthalidone | Atenolol/Chlorthalidone | 13 | suppressed |
| Cimetidine | Cimetidine | 13 | suppressed |
| Enoxaparin Sodium | Enoxaparin Sodium | 13 | suppressed |
| Glipizide Er | Glipizide | 13 | suppressed |
| Lamotrigine | Lamotrigine | 13 | suppressed |
| Leflunomide | Leflunomide | 13 | suppressed |
| Levalbuterol Hcl | Levalbuterol Hcl | 13 | suppressed |
| Levemir Flexpen | Insulin Detemir | 13 | suppressed |
| Levofloxacin | Levofloxacin | 13 | suppressed |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 13 | suppressed |
| Timolol Maleate | Timolol Maleate | 13 | suppressed |
| Tolterodine Tartrate Er | Tolterodine Tartrate | 13 | suppressed |
| Tresiba Flextouch U-100 | Insulin Degludec | 13 | suppressed |
| Trospium Chloride | Trospium Chloride | 13 | suppressed |
| Venlafaxine Hcl | Venlafaxine Hcl | 13 | suppressed |
| Medroxyprogesterone Acetate | Medroxyprogesterone Acetate | 12 | suppressed |
| Metolazone | Metolazone | 12 | suppressed |
| Mycophenolate Mofetil | Mycophenolate Mofetil | 12 | suppressed |
| Nadolol | Nadolol | 12 | suppressed |
| Niacin Er | Niacin | 12 | suppressed |
| Tizanidine Hcl | Tizanidine Hcl | 12 | suppressed |
| Calcitriol | Calcitriol | 11 | suppressed |
| Dabigatran Etexilate | Dabigatran Etexilate Mesylate | 11 | suppressed |
| Enulose | Lactulose | 11 | suppressed |
| Nebivolol Hcl | Nebivolol Hcl | 11 | suppressed |
| Nystatin-Triamcinolone | Nystatin/Triamcinolone Acet | 11 | suppressed |
| Primidone | Primidone | 11 | suppressed |
| Probenecid | Probenecid | 11 | suppressed |
| Sotalol | Sotalol Hcl | 11 | suppressed |
| Terazosin Hcl | Terazosin Hcl | 11 | suppressed |
| Ventolin Hfa | Albuterol Sulfate | 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 | $255.49 · 2 records | Amgen Inc. | GLASSIA | — | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- 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