Payment overview · 2025
General Payments
$1,243.85
53 reported records · 24 companies
Healthcare provider profile · identity verified
Gregory David Sambuchi, M.D.
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology · AMHERST, NY · NPI 1942203112
Verified facts
What the public records show
CMS Open Payments records show Gregory David Sambuchi, M.D. received $1,243.85 in general payments during 2025 across 53 reported records.
ABBVIE INC. accounted for 17.3% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 23 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Fycompa.
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 QULIPTA as an associated drug or biological on 298617 records involving 58957 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Qulipta by this doctor in 2024.
Amneal Pharmaceuticals 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 RYTARY as an associated drug or biological on 200 records involving 121 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Rytary by this doctor in 2024.
CATALYST 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 FYCOMPA as an associated drug or biological on 3130 records involving 1101 distinct recipient NPIs. Public Medicare Part D data also shows 39 claims for Fycompa by this doctor in 2024.
SK Life Science, 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 XCOPRI as an associated drug or biological on 1992 records involving 782 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Xcopri by this doctor in 2024.
UCB, 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 Briviact as an associated drug or biological on 13595 records involving 4444 distinct recipient NPIs. Public Medicare Part D data also shows 54 claims for Briviact 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 |
|---|---|---|---|---|---|
| ABBVIE INC. | Unresolved — no canonical attribution shown | $214.86 | 17.3% | 10 | 2025 |
| Averitas Pharma Inc. | Unresolved — no canonical attribution shown | $202.07 | 16.2% | 4 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $117.41 | 9.4% | 5 | 2025 |
| PFIZER INC. | Unresolved — no canonical attribution shown | $97.47 | 7.8% | 5 | 2025 |
| Teva Pharmaceuticals USA, Inc. | Unresolved — no canonical attribution shown | $77.11 | 6.2% | 2 | 2025 |
| Eisai Inc. | Unresolved — no canonical attribution shown | $66.79 | 5.4% | 3 | 2025 |
| SK Life Science, Inc. |
SK Life Science, Inc. exact · evidence 2025-04-03 |
$54.92 | 4.4% | 2 | 2025 |
| Neurocrine BioSciences, Inc. | Unresolved — no canonical attribution shown | $54.20 | 4.4% | 3 | 2025 |
| Tanabe Pharma America, Inc. | Unresolved — no canonical attribution shown | $37.45 | 3.0% | 2 | 2025 |
| Lundbeck LLC | Unresolved — no canonical attribution shown | $34.33 | 2.8% | 2 | 2025 |
| Janssen Biotech, Inc. | Unresolved — no canonical attribution shown | $33.97 | 2.7% | 2 | 2025 |
| Takeda Pharmaceuticals U.S.A., Inc. | Unresolved — no canonical attribution shown | $28.25 | 2.3% | 1 | 2025 |
| GE HEALTHCARE | Unresolved — no canonical attribution shown | $25.09 | 2.0% | 1 | 2025 |
| CATALYST PHARMACEUTICALS, INC. | Unresolved — no canonical attribution shown | $23.77 | 1.9% | 1 | 2025 |
| Ipsen Biopharmaceuticals, Inc | Unresolved — no canonical attribution shown | $20.78 | 1.7% | 1 | 2025 |
| Invivyd Inc | Unresolved — no canonical attribution shown | $20.27 | 1.6% | 1 | 2025 |
| Azurity Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $19.51 | 1.6% | 1 | 2025 |
| Amneal Pharmaceuticals LLC | Unresolved — no canonical attribution shown | $17.78 | 1.4% | 1 | 2025 |
| Octapharma USA, Inc. | Unresolved — no canonical attribution shown | $16.86 | 1.4% | 1 | 2025 |
| UCB, Inc. | Unresolved — no canonical attribution shown | $16.81 | 1.4% | 1 | 2025 |
| LivaNova USA, Inc. | Unresolved — no canonical attribution shown | $16.70 | 1.3% | 1 | 2025 |
| Alexion Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $16.64 | 1.3% | 1 | 2025 |
| Otsuka America Pharmaceutical, Inc. | Unresolved — no canonical attribution shown | $16.10 | 1.3% | 1 | 2025 |
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $14.71 | 1.2% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $1,185.36 | 52 |
| Education | $58.49 | 1 |
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 |
|---|---|---|---|---|---|
| QUTENZA Normalized: qutenza |
Drug | Averitas Pharma Inc. | $202.07 | 4 | 2025 |
Source payment records
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| BOTOX Normalized: botox |
Biological | ABBVIE INC. | $189.10 | 8 | 2025 |
Source payment records
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| UPLIZNA Normalized: uplizna |
Biological | Amgen Inc. | $117.41 | 5 | 2025 |
Source payment records
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| NURTEC ODT Normalized: nurtec odt |
Drug | PFIZER INC. | $97.47 | 5 | 2025 |
Source payment records
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| ZAVZPRET Normalized: zavzpret |
Drug | PFIZER INC. | $97.47 | 5 | 2025 |
Source payment records
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| Leqembi Normalized: leqembi |
Drug | Eisai Inc. | $66.79 | 3 | 2025 |
Source payment records
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| INGREZZA Normalized: ingrezza |
Drug | Neurocrine BioSciences, Inc. | $54.20 | 3 | 2025 |
Source payment records
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| Radicava Normalized: radicava |
Drug | Tanabe Pharma America, Inc. | $37.45 | 2 | 2025 |
Source payment records
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| VYEPTI Normalized: vyepti |
Biological | Lundbeck LLC | $34.33 | 2 | 2025 |
Source payment records
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| HYQVIA Normalized: hyqvia |
Biological | Takeda Pharmaceuticals U.S.A., Inc. | $28.25 | 1 | 2025 |
Source payment records
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| VYALEV Normalized: vyalev |
Drug | ABBVIE INC. | $25.76 | 2 | 2025 |
Source payment records
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| FYCOMPA Normalized: fycompa |
Drug | CATALYST PHARMACEUTICALS, INC. | $23.77 | 1 | 2025 |
Source payment records
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| Dysport Normalized: dysport |
Drug | Ipsen Biopharmaceuticals, Inc | $20.78 | 1 | 2025 |
Source payment records
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| PEMGARDA Normalized: pemgarda |
Biological | Invivyd Inc | $20.27 | 1 | 2025 |
Source payment records
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| ZONISADE Normalized: zonisade |
Drug | Azurity Pharmaceuticals, Inc. | $19.51 | 1 | 2025 |
Source payment records
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| AUSTEDO XR Normalized: austedo xr |
Drug | Teva Pharmaceuticals USA, Inc. | $18.62 | 1 | 2025 |
Source payment records
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| ONGENTYS Normalized: ongentys |
Drug | Amneal Pharmaceuticals LLC | $17.78 | 1 | 2025 |
Source payment records
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| PANZYGA Normalized: panzyga |
Biological | Octapharma USA, Inc. | $16.86 | 1 | 2025 |
Source payment records
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| Rystiggo Normalized: rystiggo |
Drug | UCB, Inc. | $16.81 | 1 | 2025 |
Source payment records
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| VNS THERAPY SENTIVA MODEL 1000 GENERATOR Normalized: vns therapy sentiva model 1000 generator |
Device | LivaNova USA, Inc. | $16.70 | 1 | 2025 |
Source payment records
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| ULTOMIRIS Normalized: ultomiris |
Biological | Alexion Pharmaceuticals, Inc. | $16.64 | 1 | 2025 |
Source payment records
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| REXULTI Normalized: rexulti |
Drug | Otsuka America Pharmaceutical, Inc. | $16.10 | 1 | 2025 |
Source payment records
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| WAINUA Normalized: wainua |
Drug | AstraZeneca Pharmaceuticals LP | $14.71 | 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 |
|---|---|---|---|---|---|---|
| FYCOMPA fycompa |
2025 | Fycompa | 2024 | 39 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 |
|---|---|---|---|---|---|---|
| ABBVIE INC. Exact reporting entity; no affiliate inference |
2025 | QULIPTA open payments reported associated product |
CMS Open Payments — General Payments 298617 supporting records · 58957 recipient NPIs · example record 1201352530 |
Qulipta · 2024 Exact normalized brand match · 1 Part D row |
11 | suppressed by CMS |
| Amneal Pharmaceuticals LLC Exact reporting entity; no affiliate inference |
2025 | RYTARY open payments reported associated product |
CMS Open Payments — General Payments 200 supporting records · 121 recipient NPIs · example record 1220526035 |
Rytary · 2024 Exact normalized brand match · 1 Part D row |
13 | suppressed by CMS |
| CATALYST PHARMACEUTICALS, INC. Exact reporting entity; no affiliate inference |
2025 | FYCOMPA open payments reported associated product |
CMS Open Payments — General Payments 3130 supporting records · 1101 recipient NPIs · example record 1253216846 |
Fycompa · 2024 Exact normalized brand match · 1 Part D row |
39 | suppressed by CMS |
| SK Life Science, Inc. Exact reporting entity; no affiliate inference |
2025 | XCOPRI open payments reported associated product |
CMS Open Payments — General Payments 1992 supporting records · 782 recipient NPIs · example record 1252276115 |
Xcopri · 2024 Exact normalized brand match · 1 Part D row |
29 | suppressed by CMS |
| UCB, Inc. Exact reporting entity; no affiliate inference |
2025 | Briviact open payments reported associated product |
CMS Open Payments — General Payments 13595 supporting records · 4444 recipient NPIs · example record 1224348489 |
Briviact · 2024 Exact normalized brand match · 1 Part D row |
54 | 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 |
|---|---|---|---|
| Levetiracetam | Levetiracetam | 319 | 85 |
| Gabapentin | Gabapentin | 286 | 110 |
| Pregabalin | Pregabalin | 211 | 45 |
| Duloxetine Hcl | Duloxetine Hcl | 208 | 63 |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 167 | 52 |
| Donepezil Hcl | Donepezil Hcl | 116 | 36 |
| Lamotrigine | Lamotrigine | 109 | 25 |
| Lacosamide | Lacosamide | 86 | 21 |
| Primidone | Primidone | 83 | 18 |
| Topiramate | Topiramate | 81 | 26 |
| Baclofen | Baclofen | 69 | 16 |
| Oxcarbazepine | Oxcarbazepine | 60 | 22 |
| Divalproex Sodium Er | Divalproex Sodium | 56 | suppressed |
| Briviact | Brivaracetam | 54 | suppressed |
| Memantine Hcl | Memantine Hcl | 43 | suppressed |
| Rivastigmine | Rivastigmine | 43 | suppressed |
| Phenobarbital | Phenobarbital | 41 | suppressed |
| Fycompa | Perampanel | 39 | suppressed |
| Zonisamide | Zonisamide | 39 | 11 |
| Clobazam | Clobazam | 38 | suppressed |
| Escitalopram Oxalate | Escitalopram Oxalate | 30 | suppressed |
| Rasagiline Mesylate | Rasagiline Mesylate | 30 | suppressed |
| Xcopri | Cenobamate | 29 | suppressed |
| Clopidogrel | Clopidogrel Bisulfate | 28 | suppressed |
| Carbamazepine | Carbamazepine | 22 | suppressed |
| Lamotrigine Er | Lamotrigine | 21 | suppressed |
| Rivastigmine | Rivastigmine Tartrate | 20 | suppressed |
| Amantadine | Amantadine Hcl | 19 | suppressed |
| Aptiom | Eslicarbazepine Acetate | 19 | suppressed |
| Naproxen | Naproxen | 19 | suppressed |
| Propranolol Hcl Er | Propranolol Hcl | 19 | suppressed |
| Clonazepam | Clonazepam | 18 | suppressed |
| Divalproex Sodium | Divalproex Sodium | 18 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 17 | suppressed |
| Entacapone | Entacapone | 16 | suppressed |
| Rizatriptan | Rizatriptan Benzoate | 16 | suppressed |
| Butalbital-Acetaminophen-Caffe | Butalb/Acetaminophen/Caffeine | 15 | suppressed |
| Carbidopa-Levodopa-Entacapone | Carbidopa/Levodopa/Entacapone | 14 | suppressed |
| Levetiracetam Er | Levetiracetam | 14 | suppressed |
| Memantine Hcl Er | Memantine Hcl | 14 | suppressed |
| Avonex Pen (4 Pack) | Interferon Beta-1a | 13 | suppressed |
| Folic Acid | Folic Acid | 13 | suppressed |
| Rytary | Carbidopa/Levodopa | 13 | suppressed |
| Aspirin-Dipyridamole Er | Aspirin/Dipyridamole | 12 | suppressed |
| Lorazepam | Lorazepam | 11 | 11 |
| Phenytoin Sodium Extended | Phenytoin Sodium Extended | 11 | suppressed |
| Qulipta | Atogepant | 11 | suppressed |
| Verapamil Sr | Verapamil Hcl | 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 | $1,243.85 · 53 records | ABBVIE INC. | AUSTEDO XR, BOTOX, Dysport, FYCOMPA, HYQVIA, INGREZZA, Leqembi, NURTEC ODT, ONGENTYS, PANZYGA, PEMGARDA, QUTENZA, REXULTI, Radicava, Rystiggo, ULTOMIRIS, UPLIZNA, VNS THERAPY SENTIVA MODEL 1000 GENERATOR, VYALEV, VYEPTI, WAINUA, ZAVZPRET, ZONISADE | 5 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Fycompa play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with ABBVIE 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