Payment overview · 2025
General Payments
$348.78
3 reported records · 2 companies
Healthcare provider profile · identity verified
Cassandra Williams, MD
Allopathic & Osteopathic Physicians|Internal Medicine · AMHERST, NY · NPI 1558546820
Verified facts
What the public records show
CMS Open Payments records show Cassandra Williams, MD received $348.78 in general payments during 2025 across 3 reported records.
Cook Medical LLC accounted for 64.2% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 2 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Rexulti.
Otsuka America Pharmaceutical, 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 REXULTI as an associated drug or biological on 160756 records involving 46288 distinct recipient NPIs. Public Medicare Part D data also shows 206 claims for Rexulti 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 |
|---|---|---|---|---|---|
| Cook Medical LLC | Unresolved — no canonical attribution shown | $223.79 | 64.2% | 2 | 2025 |
| Otsuka America Pharmaceutical, Inc. | Unresolved — no canonical attribution shown | $124.99 | 35.8% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $348.78 | 3 |
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 |
|---|---|---|---|---|---|
| ROSCH-UCHIDA Normalized: rosch uchida |
Device | Cook Medical LLC | $223.79 | 2 | 2025 |
Source payment records
|
|||||
| REXULTI Normalized: rexulti |
Drug | Otsuka America Pharmaceutical, Inc. | $124.99 | 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
| Open Payments product | Payment year | Part D brand | Part D year | Claims | Match method | Source |
|---|---|---|---|---|---|---|
| REXULTI rexulti |
2025 | Rexulti | 2024 | 206 | 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 |
|---|---|---|---|---|---|---|
| Otsuka America Pharmaceutical, Inc. Exact reporting entity; no affiliate inference |
2025 | REXULTI open payments reported associated product |
CMS Open Payments — General Payments 160756 supporting records · 46288 recipient NPIs · example record 1227267708 |
Rexulti · 2024 Exact normalized brand match · 1 Part D row |
206 | 20 |
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 |
|---|---|---|---|
| Levothyroxine Sodium | Levothyroxine Sodium | 1190 | 69 |
| Eliquis | Apixaban | 755 | 67 |
| Amlodipine Besylate | Amlodipine Besylate | 753 | 98 |
| Atorvastatin Calcium | Atorvastatin Calcium | 743 | 107 |
| Furosemide | Furosemide | 697 | 61 |
| Sertraline Hcl | Sertraline Hcl | 521 | 49 |
| Duloxetine Hcl | Duloxetine Hcl | 512 | 50 |
| Pantoprazole Sodium | Pantoprazole Sodium | 486 | 73 |
| Levetiracetam | Levetiracetam | 475 | 52 |
| Divalproex Sodium | Divalproex Sodium | 446 | 49 |
| Lisinopril | Lisinopril | 437 | 61 |
| Metformin Hcl | Metformin Hcl | 427 | 50 |
| Metoprolol Succinate | Metoprolol Succinate | 413 | 60 |
| Gabapentin | Gabapentin | 405 | 52 |
| Quetiapine Fumarate | Quetiapine Fumarate | 361 | 33 |
| Trazodone Hcl | Trazodone Hcl | 335 | 45 |
| Mirtazapine | Mirtazapine | 321 | 56 |
| Jardiance | Empagliflozin | 318 | 27 |
| Famotidine | Famotidine | 305 | 43 |
| Tamsulosin Hcl | Tamsulosin Hcl | 294 | 50 |
| Escitalopram Oxalate | Escitalopram Oxalate | 289 | 35 |
| Trulicity | Dulaglutide | 260 | 35 |
| Xarelto | Rivaroxaban | 251 | 16 |
| Aripiprazole | Aripiprazole | 246 | 26 |
| Risperidone | Risperidone | 224 | 19 |
| Shingrix | Varicella-Zoster Ge/As01b/Pf | 223 | 169 |
| Latanoprost | Latanoprost | 219 | 33 |
| Myrbetriq | Mirabegron | 213 | 13 |
| Rexulti | Brexpiprazole | 206 | 20 |
| Buspirone Hcl | Buspirone Hcl | 205 | 23 |
| Omeprazole | Omeprazole | 200 | 26 |
| Carvedilol | Carvedilol | 199 | 32 |
| Metoprolol Tartrate | Metoprolol Tartrate | 193 | 40 |
| Memantine Hcl | Memantine Hcl | 191 | 29 |
| Propranolol Hcl | Propranolol Hcl | 186 | 24 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 177 | 22 |
| Chlorhexidine Gluconate | Chlorhexidine Gluconate | 166 | 54 |
| Baclofen | Baclofen | 164 | 14 |
| Donepezil Hcl | Donepezil Hcl | 155 | 20 |
| Losartan Potassium | Losartan Potassium | 153 | 21 |
| Clopidogrel | Clopidogrel Bisulfate | 147 | 24 |
| Prednisone | Prednisone | 134 | 34 |
| Bumetanide | Bumetanide | 130 | 19 |
| Chlorthalidone | Chlorthalidone | 126 | 17 |
| Ondansetron Hcl | Ondansetron Hcl | 122 | 70 |
| Brimonidine Tartrate | Brimonidine Tartrate | 120 | 19 |
| Lactulose | Lactulose | 118 | 15 |
| Potassium Chloride | Potassium Chloride | 117 | 26 |
| Abrysvo | Rsv Vacc, Pref A And Pref B/Pf | 112 | 107 |
| Lantus | Insulin Glargine,hum.Rec.Anlog | 108 | 20 |
| Valproic Acid | Valproic Acid (As Sodium Salt) | 108 | 11 |
| Midodrine Hcl | Midodrine Hcl | 107 | 18 |
| Divalproex Sodium Er | Divalproex Sodium | 103 | suppressed |
| Finasteride | Finasteride | 102 | 13 |
| Ingrezza | Valbenazine Tosylate | 96 | suppressed |
| Allopurinol | Allopurinol | 95 | 12 |
| Olanzapine | Olanzapine | 94 | suppressed |
| Autoshield Duo Pen Needle | Pen Needle,dual Safety,diabetc | 93 | 22 |
| Klayesta | Nystatin | 93 | 45 |
| Nystatin | Nystatin | 93 | 42 |
| Doxycycline Hyclate | Doxycycline Hyclate | 88 | 37 |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 87 | suppressed |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 86 | 11 |
| Pravastatin Sodium | Pravastatin Sodium | 86 | 14 |
| Simvastatin | Simvastatin | 82 | suppressed |
| Acetic Acid | Acetic Acid | 80 | 27 |
| Glycopyrrolate | Glycopyrrolate | 79 | 11 |
| Ipratropium-Albuterol | Ipratropium/Albuterol Sulfate | 79 | 39 |
| Farxiga | Dapagliflozin Propanediol | 77 | suppressed |
| Cephalexin | Cephalexin | 76 | 34 |
| Hydrocortisone | Hydrocortisone | 76 | 37 |
| Oxcarbazepine | Oxcarbazepine | 75 | suppressed |
| Hydrochlorothiazide | Hydrochlorothiazide | 74 | 13 |
| Celecoxib | Celecoxib | 71 | 12 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 70 | 12 |
| Cefdinir | Cefdinir | 65 | 43 |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 65 | suppressed |
| Nystop | Nystatin | 65 | 40 |
| Ibuprofen | Ibuprofen | 64 | 26 |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 64 | suppressed |
| Bupropion Hcl Sr | Bupropion Hcl | 61 | suppressed |
| Metoclopramide Hcl | Metoclopramide Hcl | 61 | 11 |
| Spironolactone | Spironolactone | 61 | suppressed |
| Entresto | Sacubitril/Valsartan | 60 | suppressed |
| Paroxetine Hcl | Paroxetine Hcl | 60 | suppressed |
| Atropine Sulfate | Atropine Sulfate | 59 | 12 |
| Irbesartan | Irbesartan | 59 | suppressed |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 55 | 26 |
| Sevelamer Carbonate | Sevelamer Carbonate | 54 | suppressed |
| Digoxin | Digoxin | 52 | suppressed |
| Renacidin | Citric Ac/Gluconolact/Mag Carb | 52 | suppressed |
| Folic Acid | Folic Acid | 51 | suppressed |
| Ketoconazole | Ketoconazole | 51 | 22 |
| Montelukast Sodium | Montelukast Sodium | 50 | suppressed |
| Fluticasone Propionate | Fluticasone Propionate | 49 | 12 |
| Doxazosin Mesylate | Doxazosin Mesylate | 48 | suppressed |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 48 | 14 |
| Tizanidine Hcl | Tizanidine Hcl | 48 | suppressed |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 47 | 23 |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 47 | suppressed |
| Ozempic | Semaglutide | 47 | suppressed |
| Alendronate Sodium | Alendronate Sodium | 45 | suppressed |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 44 | 30 |
| Citalopram Hbr | Citalopram Hydrobromide | 44 | suppressed |
| Cyclosporine | Cyclosporine | 43 | suppressed |
| Hydralazine Hcl | Hydralazine Hcl | 43 | 12 |
| Metronidazole | Metronidazole | 43 | 13 |
| Phenytoin Sodium Extended | Phenytoin Sodium Extended | 43 | suppressed |
| Terazosin Hcl | Terazosin Hcl | 42 | suppressed |
| Levofloxacin | Levofloxacin | 41 | 24 |
| Lidocaine Hcl | Lidocaine Hcl | 40 | 30 |
| Santyl | Collagenase Clostridium Hist. | 39 | 16 |
| Clotrimazole-Betamethasone | Clotrimazole/Betamethasone Dip | 38 | 14 |
| Rivastigmine | Rivastigmine Tartrate | 37 | suppressed |
| Venlafaxine Hcl | Venlafaxine Hcl | 37 | suppressed |
| Dexamethasone | Dexamethasone | 36 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 36 | suppressed |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 36 | 26 |
| Anoro Ellipta | Umeclidinium Brm/Vilanterol Tr | 35 | suppressed |
| Insulin Lispro Kwikpen U-100 | Insulin Lispro | 34 | suppressed |
| Lubiprostone | Lubiprostone | 34 | suppressed |
| Uzedy | Risperidone | 34 | suppressed |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 33 | suppressed |
| Dorzolamide Hcl | Dorzolamide Hcl | 33 | suppressed |
| Lamotrigine | Lamotrigine | 33 | suppressed |
| Tacrolimus | Tacrolimus | 33 | suppressed |
| Amantadine | Amantadine Hcl | 32 | suppressed |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 31 | suppressed |
| Breyna | Budesonide/Formoterol Fumarate | 30 | suppressed |
| Clonidine Hcl | Clonidine Hcl | 30 | suppressed |
| Lidocaine | Lidocaine | 30 | suppressed |
| Xifaxan | Rifaximin | 30 | suppressed |
| Ceftriaxone | Ceftriaxone Sodium | 29 | 19 |
| Methocarbamol | Methocarbamol | 29 | suppressed |
| Prazosin Hcl | Prazosin Hcl | 29 | suppressed |
| Risperidone Er | Risperidone Microspheres | 29 | suppressed |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 29 | 18 |
| Valproic Acid | Valproic Acid | 29 | suppressed |
| Metformin Hcl Er | Metformin Hcl | 28 | suppressed |
| Prednisolone Acetate | Prednisolone Acetate | 28 | suppressed |
| Gemtesa | Vibegron | 27 | suppressed |
| Incruse Ellipta | Umeclidinium Bromide | 27 | suppressed |
| Tradjenta | Linagliptin | 27 | suppressed |
| Carbamazepine Er | Carbamazepine | 26 | suppressed |
| Meropenem | Meropenem | 26 | suppressed |
| Nifedipine Er | Nifedipine | 26 | suppressed |
| Scopolamine | Scopolamine | 26 | suppressed |
| Timolol Maleate | Timolol Maleate | 26 | suppressed |
| Valacyclovir | Valacyclovir Hcl | 26 | suppressed |
| Atenolol | Atenolol | 25 | suppressed |
| Calcitriol | Calcitriol | 25 | suppressed |
| Konvomep | Omeprazole/Sodium Bicarbonate | 25 | suppressed |
| Vraylar | Cariprazine Hcl | 25 | suppressed |
| Linzess | Linaclotide | 24 | suppressed |
| Lorazepam | Lorazepam | 24 | 18 |
| Mirabegron Er | Mirabegron | 24 | 11 |
| Phenytoin | Phenytoin | 24 | suppressed |
| Potassium Citrate Er | Potassium Citrate | 24 | suppressed |
| Carbidopa-Levodopa Er | Carbidopa/Levodopa | 23 | suppressed |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 23 | suppressed |
| Lovastatin | Lovastatin | 23 | suppressed |
| Medroxyprogesterone Acetate | Medroxyprogesterone Acetate | 23 | suppressed |
| Methimazole | Methimazole | 23 | suppressed |
| Fluconazole | Fluconazole | 22 | 12 |
| Mycophenolate Mofetil | Mycophenolate Mofetil | 22 | suppressed |
| Nitrofurantoin | Nitrofurantoin Macrocrystal | 22 | suppressed |
| Anastrozole | Anastrozole | 21 | suppressed |
| Hydroxychloroquine Sulfate | Hydroxychloroquine Sulfate | 21 | suppressed |
| Pioglitazone Hcl | Pioglitazone Hcl | 21 | suppressed |
| Toujeo Solostar | Insulin Glargine,hum.Rec.Anlog | 21 | suppressed |
| Erythromycin | Erythromycin Base | 20 | 15 |
| Trelegy Ellipta | Fluticasone/Umeclidin/Vilanter | 20 | suppressed |
| Trospium Chloride | Trospium Chloride | 20 | suppressed |
| Enoxaparin Sodium | Enoxaparin Sodium | 19 | suppressed |
| Omega-3 Acid Ethyl Esters | Omega-3 Acid Ethyl Esters | 19 | suppressed |
| Ondansetron Odt | Ondansetron | 19 | 11 |
| Tiotropium Bromide | Tiotropium Bromide | 19 | suppressed |
| Xiidra | Lifitegrast | 19 | suppressed |
| Albuterol Sulfate | Albuterol Sulfate | 18 | suppressed |
| Cefepime Hcl | Cefepime Hcl | 18 | 15 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 18 | suppressed |
| Entacapone | Entacapone | 18 | suppressed |
| Insulin Glargine-Yfgn | Insulin Glargine-Yfgn | 18 | 11 |
| Oxycodone Hcl | Oxycodone Hcl | 18 | 12 |
| Primidone | Primidone | 18 | suppressed |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 18 | suppressed |
| Colchicine | Colchicine | 17 | suppressed |
| Diltiazem Hcl | Diltiazem Hcl | 17 | suppressed |
| Ezetimibe | Ezetimibe | 17 | suppressed |
| Glucagon Emergency Kit | Glucagon Hcl | 17 | suppressed |
| Meclizine Hcl | Meclizine Hcl | 17 | suppressed |
| Nitroglycerin | Nitroglycerin | 17 | suppressed |
| Oxybutynin Chloride | Oxybutynin Chloride | 17 | suppressed |
| Prezcobix | Darunavir/Cobicistat | 17 | suppressed |
| Prilosec | Omeprazole Magnesium | 17 | suppressed |
| Sevelamer Hcl | Sevelamer Hcl | 17 | suppressed |
| Tivicay | Dolutegravir Sodium | 17 | suppressed |
| Topiramate | Topiramate | 17 | suppressed |
| Bupropion Xl | Bupropion Hcl | 16 | suppressed |
| Cinacalcet Hcl | Cinacalcet Hcl | 16 | suppressed |
| Exemestane | Exemestane | 16 | suppressed |
| Haloperidol Lactate | Haloperidol Lactate | 16 | suppressed |
| Lansoprazole | Lansoprazole | 16 | suppressed |
| Propylthiouracil | Propylthiouracil | 16 | suppressed |
| Trospium Chloride Er | Trospium Chloride | 16 | suppressed |
| Ziprasidone Hcl | Ziprasidone Hcl | 16 | suppressed |
| Fludrocortisone Acetate | Fludrocortisone Acetate | 15 | suppressed |
| Haloperidol | Haloperidol | 15 | suppressed |
| Nortriptyline Hcl | Nortriptyline Hcl | 15 | suppressed |
| Solifenacin Succinate | Solifenacin Succinate | 15 | suppressed |
| Vancomycin Hcl | Vancomycin/Water For Inj (Peg) | 15 | suppressed |
| Amoxicillin | Amoxicillin | 14 | suppressed |
| Betaseron | Interferon Beta-1b | 14 | suppressed |
| Galantamine Hbr | Galantamine Hbr | 14 | suppressed |
| Nuplazid | Pimavanserin Tartrate | 14 | suppressed |
| Propranolol Hcl Er | Propranolol Hcl | 14 | suppressed |
| Sodium Fluoride | Fluoride (Sodium) | 14 | suppressed |
| Tolterodine Tartrate | Tolterodine Tartrate | 14 | suppressed |
| Cefpodoxime Proxetil | Cefpodoxime Proxetil | 13 | 11 |
| Ceftazidime | Ceftazidime | 13 | suppressed |
| Dutasteride | Dutasteride | 13 | suppressed |
| Fluphenazine Hcl | Fluphenazine Hcl | 13 | suppressed |
| Glucagon Emergency Kit | Glucagon | 13 | suppressed |
| Insulin Lispro | Insulin Lispro | 13 | suppressed |
| Ketorolac Tromethamine | Ketorolac Tromethamine | 13 | suppressed |
| Lokelma | Sodium Zirconium Cyclosilicate | 13 | suppressed |
| Loperamide | Loperamide Hcl | 13 | suppressed |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 13 | suppressed |
| Oxycontin | Oxycodone Hcl | 13 | suppressed |
| Tiagabine Hcl | Tiagabine Hcl | 13 | suppressed |
| Zoryve | Roflumilast | 13 | suppressed |
| Aristada | Aripiprazole Lauroxil | 12 | suppressed |
| Benztropine Mesylate | Benztropine Mesylate | 12 | suppressed |
| Clonazepam | Clonazepam | 12 | suppressed |
| Clotrimazole | Clotrimazole | 12 | suppressed |
| Daptomycin | Daptomycin | 12 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 12 | suppressed |
| Ertapenem | Ertapenem Sodium | 12 | suppressed |
| Haloperidol Decanoate | Haloperidol Decanoate | 12 | suppressed |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 12 | 12 |
| Sucralfate | Sucralfate | 12 | suppressed |
| Tramadol Hcl | Tramadol Hcl | 12 | 11 |
| Trihexyphenidyl Hcl | Trihexyphenidyl Hcl | 12 | suppressed |
| Xeljanz | Tofacitinib Citrate | 12 | suppressed |
| Azithromycin | Azithromycin | 11 | suppressed |
| Benazepril Hcl | Benazepril Hcl | 11 | suppressed |
| Clobetasol Propionate | Clobetasol Propionate | 11 | suppressed |
| Famciclovir | Famciclovir | 11 | suppressed |
| Fluphenazine Decanoate | Fluphenazine Decanoate | 11 | suppressed |
| Genvoya | Elviteg/Cob/Emtri/Tenof Alafen | 11 | suppressed |
| Ranolazine Er | Ranolazine | 11 | suppressed |
| Valsartan-Hydrochlorothiazide | Valsartan/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 | $348.78 · 3 records | Cook Medical LLC | REXULTI, ROSCH-UCHIDA | 1 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Rexulti play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with Otsuka America Pharmaceutical, 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