Payment overview · 2025
General Payments
105 reported records · 14 companies
Healthcare provider profile · identity verified
Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant · DETROIT, MI · NPI 1154604205
Verified facts
CMS Open Payments records show Michael Darrell Stewart, PA-C received $3,428.83 in general payments during 2025 across 105 reported records.
Otsuka America Pharmaceutical, Inc. accounted for 20.6% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 18 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Abilify Asimtufii, Abilify Maintena, Aristada, Caplyta, Fanapt, Invega Sustenna, Lybalvi, Rexulti, Uzedy, Vraylar.
ABBVIE 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 VRAYLAR as an associated drug or biological on 377741 records involving 62704 distinct recipient NPIs. Public Medicare Part D data also shows 81 claims for Vraylar by this doctor in 2024.
Alkermes, 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 ARISTADA as an associated drug or biological on 76041 records involving 17486 distinct recipient NPIs. Public Medicare Part D data also shows 28 claims for Aristada by this doctor in 2024.
Alkermes, 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 LYBALVI as an associated drug or biological on 93784 records involving 20135 distinct recipient NPIs. Public Medicare Part D data also shows 26 claims for Lybalvi by this doctor in 2024.
ITI, Inc. (d/b/a Intra-Cellular Therapies, 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 CAPLYTA as an associated drug or biological on 211855 records involving 46143 distinct recipient NPIs. Public Medicare Part D data also shows 54 claims for Caplyta by this doctor in 2024.
Janssen Pharmaceuticals, 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 Caplyta as an associated drug or biological on 11 records involving 9 distinct recipient NPIs. Public Medicare Part D data also shows 54 claims for Caplyta by this doctor in 2024.
Janssen Pharmaceuticals, 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 INVEGA SUSTENNA as an associated drug or biological on 39068 records involving 11966 distinct recipient NPIs. Public Medicare Part D data also shows 145 claims for Invega Sustenna by this doctor in 2024.
Janssen Pharmaceuticals, 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 INVEGA TRINZA as an associated drug or biological on 8191 records involving 2146 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Invega Trinza by this doctor in 2024.
Lundbeck LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ABILIFY ASIMTUFII as an associated drug or biological on 4974 records involving 1745 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Abilify Asimtufii by this doctor in 2024.
Lundbeck LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ABILIFY MAINTENA as an associated drug or biological on 2902 records involving 986 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Abilify Maintena by this doctor in 2024.
Lundbeck LLC 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 71829 records involving 25812 distinct recipient NPIs. Public Medicare Part D data also shows 89 claims for Rexulti by this doctor in 2024.
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 ABILIFY ASIMTUFII as an associated drug or biological on 37017 records involving 12446 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Abilify Asimtufii by this doctor in 2024.
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 ABILIFY MAINTENA as an associated drug or biological on 27924 records involving 10497 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Abilify Maintena by this doctor in 2024.
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 89 claims for Rexulti by this doctor in 2024.
Teva Pharmaceuticals USA, 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 UZEDY as an associated drug or biological on 46702 records involving 13355 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Uzedy by this doctor in 2024.
Vanda Pharmaceuticals 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 FANAPT as an associated drug or biological on 95605 records involving 21383 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Fanapt by this doctor in 2024.
These records do not establish that a payment influenced prescribing or medical care.
Payment overview · 2025
105 reported records · 14 companies
Separate record types
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?
| Reported company | Canonical company | Amount | Share | Records | Year |
|---|---|---|---|---|---|
| Otsuka America Pharmaceutical, Inc. | Unresolved — no canonical attribution shown | $706.65 | 20.6% | 16 | 2025 |
| ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) | Unresolved — no canonical attribution shown | $539.26 | 15.7% | 18 | 2025 |
| Alkermes, Inc. | Unresolved — no canonical attribution shown | $407.62 | 11.9% | 13 | 2025 |
| Indivior Inc. | Unresolved — no canonical attribution shown | $330.06 | 9.6% | 12 | 2025 |
| E.R. Squibb & Sons, L.L.C. | Unresolved — no canonical attribution shown | $281.31 | 8.2% | 11 | 2025 |
| Janssen Pharmaceuticals, Inc | Unresolved — no canonical attribution shown | $264.31 | 7.7% | 8 | 2025 |
| Neurocrine BioSciences, Inc. | Unresolved — no canonical attribution shown | $261.43 | 7.6% | 9 | 2025 |
| Lundbeck LLC | Unresolved — no canonical attribution shown | $190.42 | 5.5% | 5 | 2025 |
| Teva Pharmaceuticals USA, Inc. | Unresolved — no canonical attribution shown | $158.64 | 4.6% | 4 | 2025 |
| Braeburn Inc. | Unresolved — no canonical attribution shown | $125.00 | 3.6% | 1 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $71.12 | 2.1% | 3 | 2025 |
| Luye Pharma (USA) Ltd. | Unresolved — no canonical attribution shown | $48.13 | 1.4% | 3 | 2025 |
| Aimmune Therapeutics, Inc. | Unresolved — no canonical attribution shown | $23.86 | 0.7% | 1 | 2025 |
| Vanda Pharmaceuticals Inc. | Unresolved — no canonical attribution shown | $21.02 | 0.6% | 1 | 2025 |
What were the payments for?
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $3,428.83 | 105 |
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
| Reported product | Type | Reported company | Related amount* | Records | Year |
|---|---|---|---|---|---|
| REXULTI Normalized: rexulti |
Drug | Lundbeck LLC, Otsuka America Pharmaceutical, Inc. | $605.31 | 13 | 2025 |
Source payment records
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| CAPLYTA Normalized: caplyta |
Drug | ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) | $539.26 | 18 | 2025 |
Source payment records
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| LYBALVI Normalized: lybalvi |
Drug | Alkermes, Inc. | $371.69 | 11 | 2025 |
Source payment records
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| SUBLOCADE Normalized: sublocade |
Drug | Indivior Inc. | $330.06 | 12 | 2025 |
Source payment records
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| ABILIFY ASIMTUFII Normalized: abilify asimtufii |
Drug | Otsuka America Pharmaceutical, Inc. | $291.76 | 8 | 2025 |
Source payment records
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| ABILIFY MAINTENA Normalized: abilify maintena |
Drug | Otsuka America Pharmaceutical, Inc. | $291.76 | 8 | 2025 |
Source payment records
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| COBENFY Normalized: cobenfy |
Drug | E.R. Squibb & Sons, L.L.C. | $281.31 | 11 | 2025 |
Source payment records
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| ARISTADA Normalized: aristada |
Drug | Alkermes, Inc. | $276.12 | 11 | 2025 |
Source payment records
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| INVEGA SUSTENNA Normalized: invega sustenna |
Drug | Janssen Pharmaceuticals, Inc | $264.31 | 8 | 2025 |
Source payment records
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| INGREZZA Normalized: ingrezza |
Drug | Neurocrine BioSciences, Inc. | $261.43 | 9 | 2025 |
Source payment records
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| UZEDY Normalized: uzedy |
Drug | Teva Pharmaceuticals USA, Inc. | $140.40 | 3 | 2025 |
Source payment records
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| BRIXADI Normalized: brixadi |
Drug | Braeburn Inc. | $125.00 | 1 | 2025 |
Source payment records
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| VRAYLAR Normalized: vraylar |
Drug | ABBVIE INC. | $71.12 | 3 | 2025 |
Source payment records
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| ERZOFRI EXTENDED-RELEASE Normalized: erzofri extended release |
Drug | Luye Pharma (USA) Ltd. | $48.13 | 3 | 2025 |
Source payment records
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| ARISTADA INITIO Normalized: aristada initio |
Drug | Alkermes, Inc. | $27.78 | 1 | 2025 |
Source payment records
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| VOWST Normalized: vowst |
Biological | Aimmune Therapeutics, Inc. | $23.86 | 1 | 2025 |
Source payment records
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| FANAPT Normalized: fanapt |
Drug | Vanda Pharmaceuticals Inc. | $21.02 | 1 | 2025 |
Source payment records
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| AUSTEDO XR Normalized: austedo xr |
Drug | Teva Pharmaceuticals USA, Inc. | $18.24 | 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.
| Open Payments product | Payment year | Part D brand | Part D year | Claims | Match method | Source |
|---|---|---|---|---|---|---|
| ABILIFY ASIMTUFII abilify asimtufii |
2025 | Abilify Asimtufii | 2024 | 15 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| ABILIFY MAINTENA abilify maintena |
2025 | Abilify Maintena | 2024 | 21 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| ARISTADA aristada |
2025 | Aristada | 2024 | 28 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| CAPLYTA caplyta |
2025 | Caplyta | 2024 | 54 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| FANAPT fanapt |
2025 | Fanapt | 2024 | 13 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| INVEGA SUSTENNA invega sustenna |
2025 | Invega Sustenna | 2024 | 145 | exact normalized | Medicare Part D |
| LYBALVI lybalvi |
2025 | Lybalvi | 2024 | 26 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| REXULTI rexulti |
2025 | Rexulti | 2024 | 89 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| UZEDY uzedy |
2025 | Uzedy | 2024 | 15 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| VRAYLAR vraylar |
2025 | Vraylar | 2024 | 81 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
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 |
|---|---|---|---|---|---|---|
| ABBVIE INC. Exact reporting entity; no affiliate inference |
2025 | VRAYLAR open payments reported associated product |
CMS Open Payments — General Payments 377741 supporting records · 62704 recipient NPIs · example record 1201352550 |
Vraylar · 2024 Exact normalized brand match · 1 Part D row |
81 | suppressed by CMS |
| Alkermes, Inc. Exact reporting entity; no affiliate inference |
2025 | ARISTADA open payments reported associated product |
CMS Open Payments — General Payments 76041 supporting records · 17486 recipient NPIs · example record 1222428566 |
Aristada · 2024 Exact normalized brand match · 1 Part D row |
28 | suppressed by CMS |
| Alkermes, Inc. Exact reporting entity; no affiliate inference |
2025 | LYBALVI open payments reported associated product |
CMS Open Payments — General Payments 93784 supporting records · 20135 recipient NPIs · example record 1222428566 |
Lybalvi · 2024 Exact normalized brand match · 1 Part D row |
26 | suppressed by CMS |
| ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Exact reporting entity; no affiliate inference |
2025 | CAPLYTA open payments reported associated product |
CMS Open Payments — General Payments 211855 supporting records · 46143 recipient NPIs · example record 1241243071 |
Caplyta · 2024 Exact normalized brand match · 1 Part D row |
54 | suppressed by CMS |
| Janssen Pharmaceuticals, Inc Exact reporting entity; no affiliate inference |
2025 | Caplyta open payments reported associated product |
CMS Open Payments — General Payments 11 supporting records · 9 recipient NPIs · example record 1174547314 |
Caplyta · 2024 Exact normalized brand match · 1 Part D row |
54 | suppressed by CMS |
| Janssen Pharmaceuticals, Inc Exact reporting entity; no affiliate inference |
2025 | INVEGA SUSTENNA open payments reported associated product |
CMS Open Payments — General Payments 39068 supporting records · 11966 recipient NPIs · example record 1174223262 |
Invega Sustenna · 2024 Exact normalized brand match · 1 Part D row |
145 | 19 |
| Janssen Pharmaceuticals, Inc Exact reporting entity; no affiliate inference |
2025 | INVEGA TRINZA open payments reported associated product |
CMS Open Payments — General Payments 8191 supporting records · 2146 recipient NPIs · example record 1174223262 |
Invega Trinza · 2024 Exact normalized brand match · 1 Part D row |
29 | suppressed by CMS |
| Lundbeck LLC Exact reporting entity; no affiliate inference |
2025 | ABILIFY ASIMTUFII open payments reported associated product |
CMS Open Payments — General Payments 4974 supporting records · 1745 recipient NPIs · example record 1251759998 |
Abilify Asimtufii · 2024 Exact normalized brand match · 1 Part D row |
15 | suppressed by CMS |
| Lundbeck LLC Exact reporting entity; no affiliate inference |
2025 | ABILIFY MAINTENA open payments reported associated product |
CMS Open Payments — General Payments 2902 supporting records · 986 recipient NPIs · example record 1251759994 |
Abilify Maintena · 2024 Exact normalized brand match · 1 Part D row |
21 | suppressed by CMS |
| Lundbeck LLC Exact reporting entity; no affiliate inference |
2025 | REXULTI open payments reported associated product |
CMS Open Payments — General Payments 71829 supporting records · 25812 recipient NPIs · example record 1251759986 |
Rexulti · 2024 Exact normalized brand match · 1 Part D row |
89 | suppressed by CMS |
| Otsuka America Pharmaceutical, Inc. Exact reporting entity; no affiliate inference |
2025 | ABILIFY ASIMTUFII open payments reported associated product |
CMS Open Payments — General Payments 37017 supporting records · 12446 recipient NPIs · example record 1227267748 |
Abilify Asimtufii · 2024 Exact normalized brand match · 1 Part D row |
15 | suppressed by CMS |
| Otsuka America Pharmaceutical, Inc. Exact reporting entity; no affiliate inference |
2025 | ABILIFY MAINTENA open payments reported associated product |
CMS Open Payments — General Payments 27924 supporting records · 10497 recipient NPIs · example record 1227267721 |
Abilify Maintena · 2024 Exact normalized brand match · 1 Part D row |
21 | suppressed by CMS |
| 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 |
89 | suppressed by CMS |
| Teva Pharmaceuticals USA, Inc. Exact reporting entity; no affiliate inference |
2025 | UZEDY open payments reported associated product |
CMS Open Payments — General Payments 46702 supporting records · 13355 recipient NPIs · example record 1247244226 |
Uzedy · 2024 Exact normalized brand match · 1 Part D row |
15 | suppressed by CMS |
| Vanda Pharmaceuticals Inc. Exact reporting entity; no affiliate inference |
2025 | FANAPT open payments reported associated product |
CMS Open Payments — General Payments 95605 supporting records · 21383 recipient NPIs · example record 1232940535 |
Fanapt · 2024 Exact normalized brand match · 1 Part D row |
13 | 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
| Brand | Generic | Claims | Beneficiaries |
|---|---|---|---|
| Quetiapine Fumarate | Quetiapine Fumarate | 334 | 40 |
| Trazodone Hcl | Trazodone Hcl | 300 | 51 |
| Olanzapine | Olanzapine | 223 | 21 |
| Haloperidol Decanoate | Haloperidol Decanoate | 190 | 23 |
| Aripiprazole | Aripiprazole | 176 | 32 |
| Escitalopram Oxalate | Escitalopram Oxalate | 169 | 26 |
| Buspirone Hcl | Buspirone Hcl | 168 | 30 |
| Invega Sustenna | Paliperidone Palmitate | 145 | 19 |
| Benztropine Mesylate | Benztropine Mesylate | 135 | 20 |
| Risperidone | Risperidone | 130 | 16 |
| Sertraline Hcl | Sertraline Hcl | 124 | 19 |
| Mirtazapine | Mirtazapine | 115 | 16 |
| Hydroxyzine Pamoate | Hydroxyzine Pamoate | 102 | 21 |
| Rexulti | Brexpiprazole | 89 | suppressed |
| Oxcarbazepine | Oxcarbazepine | 86 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 85 | 14 |
| Duloxetine Hcl | Duloxetine Hcl | 84 | 14 |
| Vraylar | Cariprazine Hcl | 81 | suppressed |
| Haloperidol | Haloperidol | 78 | 15 |
| Divalproex Sodium | Divalproex Sodium | 76 | 17 |
| Lurasidone Hcl | Lurasidone Hcl | 69 | 11 |
| Divalproex Sodium Er | Divalproex Sodium | 58 | suppressed |
| Paliperidone Er | Paliperidone | 58 | 11 |
| Fluphenazine Decanoate | Fluphenazine Decanoate | 57 | 11 |
| Caplyta | Lumateperone Tosylate | 54 | suppressed |
| Fluphenazine Hcl | Fluphenazine Hcl | 54 | 11 |
| Bupropion Xl | Bupropion Hcl | 52 | suppressed |
| Citalopram Hbr | Citalopram Hydrobromide | 48 | suppressed |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 44 | suppressed |
| Ziprasidone Hcl | Ziprasidone Hcl | 43 | suppressed |
| Doxepin Hcl | Doxepin Hcl | 41 | suppressed |
| Bupropion Hcl Sr | Bupropion Hcl | 40 | suppressed |
| Buprenorphine-Naloxone | Buprenorphine Hcl/Naloxone Hcl | 35 | suppressed |
| Invega Trinza | Paliperidone Palmitate | 29 | suppressed |
| Aristada | Aripiprazole Lauroxil | 28 | suppressed |
| Naltrexone Hcl | Naltrexone Hcl | 28 | suppressed |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 27 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 26 | suppressed |
| Lybalvi | Olanzapine/Samidorphan Malate | 26 | suppressed |
| Clozapine | Clozapine | 25 | suppressed |
| Quetiapine Fumarate Er | Quetiapine Fumarate | 24 | suppressed |
| Bupropion Hcl | Bupropion Hcl | 22 | suppressed |
| Paroxetine Hcl | Paroxetine Hcl | 22 | suppressed |
| Abilify Maintena | Aripiprazole | 21 | suppressed |
| Auvelity | Dextromethorphan Hbr/Bupropion | 21 | suppressed |
| Topiramate | Topiramate | 21 | suppressed |
| Propranolol Hcl | Propranolol Hcl | 19 | suppressed |
| Trintellix | Vortioxetine Hydrobromide | 19 | suppressed |
| Lamotrigine | Lamotrigine | 18 | suppressed |
| Clonazepam | Clonazepam | 17 | suppressed |
| Vilazodone Hcl | Vilazodone Hcl | 16 | suppressed |
| Abilify Asimtufii | Aripiprazole | 15 | suppressed |
| Uzedy | Risperidone | 15 | suppressed |
| Atomoxetine Hcl | Atomoxetine Hcl | 13 | suppressed |
| Fanapt | Iloperidone | 13 | suppressed |
| Amantadine | Amantadine Hcl | 12 | suppressed |
| Carbamazepine | Carbamazepine | 11 | suppressed |
| Gabapentin | Gabapentin | 11 | suppressed |
Timeline
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 | $3,428.83 · 105 records | Otsuka America Pharmaceutical, Inc. | ABILIFY ASIMTUFII, ABILIFY MAINTENA, ARISTADA, ARISTADA INITIO, AUSTEDO XR, BRIXADI, CAPLYTA, COBENFY, ERZOFRI EXTENDED-RELEASE, FANAPT, INGREZZA, INVEGA SUSTENNA, LYBALVI, REXULTI, SUBLOCADE, UZEDY, VOWST, VRAYLAR | 15 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
These are general questions generated from reviewed templates. They are not personalized medical advice.
Sources and limitations
| 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