Payment overview · 2025
General Payments
$29.26
2 reported records · 1 companies
Healthcare provider profile · identity verified
Dabiruddin Humayun, MD
Allopathic & Osteopathic Physicians|Internal Medicine · RALEIGH, NC · NPI 1538260211
Verified facts
What the public records show
CMS Open Payments records show Dabiruddin Humayun, MD received $29.26 in general payments during 2025 across 2 reported records.
Otsuka America Pharmaceutical, Inc. accounted for 100.0% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 1 associated product.
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 NUEDEXTA as an associated drug or biological on 393 records involving 285 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Nuedexta 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 |
|---|---|---|---|---|---|
| Otsuka America Pharmaceutical, Inc. | Unresolved — no canonical attribution shown | $29.26 | 100.0% | 2 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Education | $29.26 | 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 |
|---|---|---|---|---|---|
| REXULTI Normalized: rexulti |
Drug | Otsuka America Pharmaceutical, Inc. | $29.26 | 2 | 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.
| 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 | NUEDEXTA open payments reported associated product |
CMS Open Payments — General Payments 393 supporting records · 285 recipient NPIs · example record 1227268901 |
Nuedexta · 2024 Exact normalized brand match · 1 Part D row |
29 | 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 |
|---|---|---|---|
| Eliquis | Apixaban | 406 | 72 |
| Atorvastatin Calcium | Atorvastatin Calcium | 383 | 94 |
| Levothyroxine Sodium | Levothyroxine Sodium | 285 | 61 |
| Trazodone Hcl | Trazodone Hcl | 276 | 56 |
| Amlodipine Besylate | Amlodipine Besylate | 260 | 66 |
| Gabapentin | Gabapentin | 219 | 51 |
| Sertraline Hcl | Sertraline Hcl | 215 | 41 |
| Furosemide | Furosemide | 192 | 56 |
| Omeprazole | Omeprazole | 192 | 60 |
| Metoprolol Succinate | Metoprolol Succinate | 162 | 44 |
| Losartan Potassium | Losartan Potassium | 155 | 41 |
| Metoprolol Tartrate | Metoprolol Tartrate | 145 | 33 |
| Mirtazapine | Mirtazapine | 137 | 31 |
| Potassium Chloride | Potassium Chloride | 132 | 28 |
| Tamsulosin Hcl | Tamsulosin Hcl | 131 | 31 |
| Levetiracetam | Levetiracetam | 119 | 16 |
| Carvedilol | Carvedilol | 105 | 28 |
| Pantoprazole Sodium | Pantoprazole Sodium | 98 | 23 |
| Metformin Hcl | Metformin Hcl | 97 | 29 |
| Memantine Hcl | Memantine Hcl | 89 | 21 |
| Divalproex Sodium | Divalproex Sodium | 84 | 17 |
| Lisinopril | Lisinopril | 83 | 17 |
| Famotidine | Famotidine | 72 | 22 |
| Oxcarbazepine | Oxcarbazepine | 71 | suppressed |
| Duloxetine Hcl | Duloxetine Hcl | 70 | 19 |
| Finasteride | Finasteride | 70 | 15 |
| Pravastatin Sodium | Pravastatin Sodium | 67 | 15 |
| Clopidogrel | Clopidogrel Bisulfate | 66 | 16 |
| Donepezil Hcl | Donepezil Hcl | 66 | 15 |
| Baclofen | Baclofen | 65 | 12 |
| Latanoprost | Latanoprost | 65 | 12 |
| Klor-Con 10 | Potassium Chloride | 64 | 15 |
| Buspirone Hcl | Buspirone Hcl | 63 | 14 |
| Ipratropium-Albuterol | Ipratropium/Albuterol Sulfate | 62 | 33 |
| Gemtesa | Vibegron | 55 | suppressed |
| Escitalopram Oxalate | Escitalopram Oxalate | 54 | 19 |
| Bupropion Xl | Bupropion Hcl | 53 | suppressed |
| Morphine Sulfate | Morphine Sulfate | 49 | 19 |
| Oxybutynin Chloride | Oxybutynin Chloride | 47 | suppressed |
| Pregabalin | Pregabalin | 47 | suppressed |
| Torsemide | Torsemide | 47 | suppressed |
| Bumetanide | Bumetanide | 46 | suppressed |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 46 | 11 |
| Fluticasone Propionate | Fluticasone Propionate | 43 | 17 |
| Phenobarbital | Phenobarbital | 39 | suppressed |
| Spironolactone | Spironolactone | 37 | 12 |
| Ciclopirox | Ciclopirox Olamine | 35 | 16 |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 35 | 17 |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 34 | suppressed |
| Lorazepam | Lorazepam | 34 | 18 |
| Ondansetron Odt | Ondansetron | 34 | 17 |
| Montelukast Sodium | Montelukast Sodium | 33 | suppressed |
| Ezetimibe | Ezetimibe | 32 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 30 | suppressed |
| Warfarin Sodium | Warfarin Sodium | 30 | suppressed |
| Nuedexta | Dextromethorphan Hbr/Quinidine | 29 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 28 | suppressed |
| Hydralazine Hcl | Hydralazine Hcl | 28 | suppressed |
| Nystatin | Nystatin | 28 | 13 |
| Tramadol Hcl | Tramadol Hcl | 28 | suppressed |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 28 | suppressed |
| Albuterol Sulfate | Albuterol Sulfate | 27 | 11 |
| Lacosamide | Lacosamide | 27 | suppressed |
| Novolog Flexpen | Insulin Aspart | 27 | suppressed |
| Primidone | Primidone | 26 | suppressed |
| Quetiapine Fumarate | Quetiapine Fumarate | 26 | 13 |
| Xarelto | Rivaroxaban | 26 | suppressed |
| Amiodarone Hcl | Amiodarone Hcl | 25 | 11 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 25 | suppressed |
| Ondansetron Hcl | Ondansetron Hcl | 25 | 20 |
| Ropinirole Hcl | Ropinirole Hcl | 25 | suppressed |
| Hydrochlorothiazide | Hydrochlorothiazide | 24 | suppressed |
| Insulin Lispro Kwikpen U-100 | Insulin Lispro | 24 | suppressed |
| Phenytoin Sodium Extended | Phenytoin Sodium Extended | 24 | suppressed |
| Alendronate Sodium | Alendronate Sodium | 23 | suppressed |
| Fenofibrate | Fenofibrate | 23 | suppressed |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 23 | suppressed |
| Letrozole | Letrozole | 23 | suppressed |
| Propranolol Hcl | Propranolol Hcl | 23 | suppressed |
| Tizanidine Hcl | Tizanidine Hcl | 23 | suppressed |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 22 | 16 |
| Azelastine Hcl | Azelastine Hcl | 22 | suppressed |
| Linzess | Linaclotide | 22 | suppressed |
| Citalopram Hbr | Citalopram Hydrobromide | 21 | suppressed |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 21 | suppressed |
| Prednisone | Prednisone | 21 | 13 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 21 | suppressed |
| Bupropion Hcl Sr | Bupropion Hcl | 20 | suppressed |
| Colchicine | Colchicine | 20 | suppressed |
| Myrbetriq | Mirabegron | 20 | suppressed |
| Doxepin Hcl | Doxepin Hcl | 19 | suppressed |
| Atropine Sulfate | Atropine Sulfate | 18 | 14 |
| Breo Ellipta | Fluticasone/Vilanterol | 18 | suppressed |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 18 | suppressed |
| Glipizide | Glipizide | 18 | suppressed |
| Novolin N Flexpen | Insulin Nph Human Isophane | 18 | suppressed |
| Aripiprazole | Aripiprazole | 17 | suppressed |
| Megestrol Acetate | Megestrol Acetate | 17 | suppressed |
| Wixela Inhub | Fluticasone Propion/Salmeterol | 17 | suppressed |
| Budesonide | Budesonide | 16 | suppressed |
| Chlorhexidine Gluconate | Chlorhexidine Gluconate | 16 | suppressed |
| Clonazepam | Clonazepam | 16 | suppressed |
| Diltiazem Hcl | Diltiazem Hcl | 16 | suppressed |
| Methimazole | Methimazole | 16 | suppressed |
| Propranolol Hcl Er | Propranolol Hcl | 16 | suppressed |
| Ramelteon | Ramelteon | 16 | suppressed |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 15 | 11 |
| Carbidopa-Levodopa Er | Carbidopa/Levodopa | 15 | suppressed |
| Enulose | Lactulose | 15 | suppressed |
| Glimepiride | Glimepiride | 15 | suppressed |
| Insulin Glargine-Yfgn | Insulin Glargine-Yfgn | 15 | suppressed |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 15 | suppressed |
| Meloxicam | Meloxicam | 15 | suppressed |
| Midodrine Hcl | Midodrine Hcl | 15 | suppressed |
| Simvastatin | Simvastatin | 15 | suppressed |
| Ammonium Lactate | Ammonium Lactate | 14 | suppressed |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 14 | suppressed |
| Doxycycline Hyclate | Doxycycline Hyclate | 14 | suppressed |
| Hydrocortisone | Hydrocortisone | 14 | suppressed |
| Jardiance | Empagliflozin | 14 | suppressed |
| Methadone Hcl | Methadone Hcl | 14 | suppressed |
| Olanzapine | Olanzapine | 14 | suppressed |
| Oseltamivir Phosphate | Oseltamivir Phosphate | 14 | 12 |
| Pioglitazone Hcl | Pioglitazone Hcl | 14 | suppressed |
| Armour Thyroid | Thyroid,pork | 13 | suppressed |
| Azithromycin | Azithromycin | 13 | 11 |
| Lansoprazole | Lansoprazole | 13 | suppressed |
| Lidocaine | Lidocaine | 13 | suppressed |
| Paroxetine Hcl | Paroxetine Hcl | 13 | suppressed |
| Allopurinol | Allopurinol | 12 | suppressed |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 12 | suppressed |
| Erythromycin | Erythromycin Base | 12 | suppressed |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 12 | suppressed |
| Incruse Ellipta | Umeclidinium Bromide | 12 | suppressed |
| Indapamide | Indapamide | 12 | suppressed |
| Prazosin Hcl | Prazosin Hcl | 12 | suppressed |
| Amantadine | Amantadine Hcl | 11 | suppressed |
| Arformoterol Tartrate | Arformoterol Tartrate | 11 | suppressed |
| Atenolol | Atenolol | 11 | suppressed |
| Brimonidine Tartrate | Brimonidine Tartrate | 11 | suppressed |
| Cephalexin | Cephalexin | 11 | suppressed |
| Darunavir | Darunavir | 11 | suppressed |
| Divalproex Sodium Er | Divalproex Sodium | 11 | suppressed |
| Ketoconazole | Ketoconazole | 11 | suppressed |
| Ritonavir | Ritonavir | 11 | suppressed |
| Scopolamine | Scopolamine | 11 | suppressed |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 11 | suppressed |
| Topiramate | Topiramate | 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 | $29.26 · 2 records | Otsuka America Pharmaceutical, Inc. | REXULTI | 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 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