Payment overview · 2025
General Payments
$4,856.13
205 reported records · 29 companies
Healthcare provider profile · identity verified
Robert Ronald Silzer, M.D.
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology · LITTLE ROCK, AR · NPI 1881626257
Verified facts
What the public records show
CMS Open Payments records show Robert Ronald Silzer, M.D. received $4,856.13 in general payments during 2025 across 205 reported records.
ABBVIE INC. accounted for 18.0% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 43 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Gammaked, Gamunex-C, Nurtec Odt, Ubrelvy.
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 UBRELVY as an associated drug or biological on 299803 records involving 61203 distinct recipient NPIs. Public Medicare Part D data also shows 32 claims for Ubrelvy by this doctor in 2024.
CSL Behring reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Privigen as an associated drug or biological on 464 records involving 289 distinct recipient NPIs. Public Medicare Part D data also shows 37 claims for Privigen by this doctor in 2024.
Grifols USA, 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 Gamunex-C as an associated drug or biological on 3977 records involving 2134 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Gamunex-C by this doctor in 2024.
Kedrion Biopharma, 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 GAMMAKED as an associated drug or biological on 761 records involving 541 distinct recipient NPIs. Public Medicare Part D data also shows 27 claims for Gammaked by this doctor in 2024.
PFIZER 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 NURTEC ODT as an associated drug or biological on 217574 records involving 54025 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Nurtec Odt by this doctor in 2024.
Takeda Pharmaceuticals U.S.A., 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 GAMMAGARD LIQUID as an associated drug or biological on 29 records involving 8 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Gammagard Liquid 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 | $873.48 | 18.0% | 46 | 2025 |
| UCB, Inc. | Unresolved — no canonical attribution shown | $612.42 | 12.6% | 19 | 2025 |
| TG Therapeutics, Inc. | Unresolved — no canonical attribution shown | $561.87 | 11.6% | 20 | 2025 |
| Alexion Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $347.15 | 7.2% | 8 | 2025 |
| Novartis Pharmaceuticals Corporation | Unresolved — no canonical attribution shown | $271.21 | 5.6% | 14 | 2025 |
| CSL Behring | Unresolved — no canonical attribution shown | $191.41 | 3.9% | 10 | 2025 |
| ARGENX US, INC. | Unresolved — no canonical attribution shown | $167.59 | 3.5% | 8 | 2025 |
| Neurocrine BioSciences, Inc. | Unresolved — no canonical attribution shown | $163.63 | 3.4% | 3 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $159.76 | 3.3% | 9 | 2025 |
| Amneal Pharmaceuticals LLC | Unresolved — no canonical attribution shown | $153.26 | 3.2% | 12 | 2025 |
| EMD Serono, Inc. | Unresolved — no canonical attribution shown | $131.81 | 2.7% | 6 | 2025 |
| PFIZER INC. | Unresolved — no canonical attribution shown | $127.36 | 2.6% | 7 | 2025 |
| Takeda Pharmaceuticals U.S.A., Inc. | Unresolved — no canonical attribution shown | $111.81 | 2.3% | 4 | 2025 |
| Kedrion Biopharma, Inc. | Unresolved — no canonical attribution shown | $109.94 | 2.3% | 1 | 2025 |
| Medtronic, Inc. |
Medtronic, Inc. exact · evidence 2025-07-22 |
$101.56 | 2.1% | 1 | 2025 |
| Lundbeck LLC | Unresolved — no canonical attribution shown | $99.29 | 2.0% | 4 | 2025 |
| Biogen, Inc. | Unresolved — no canonical attribution shown | $93.29 | 1.9% | 4 | 2025 |
| Merz Pharmaceuticals, LLC | Unresolved — no canonical attribution shown | $80.92 | 1.7% | 3 | 2025 |
| MDD US Operations, LLC | Unresolved — no canonical attribution shown | $75.31 | 1.6% | 4 | 2025 |
| Ipsen Biopharmaceuticals, Inc | Unresolved — no canonical attribution shown | $72.24 | 1.5% | 3 | 2025 |
| Lilly USA, LLC | Unresolved — no canonical attribution shown | $59.76 | 1.2% | 4 | 2025 |
| Eisai Inc. | Unresolved — no canonical attribution shown | $57.91 | 1.2% | 3 | 2025 |
| Genentech USA, Inc. | Unresolved — no canonical attribution shown | $56.36 | 1.2% | 3 | 2025 |
| Celgene Corporation | Unresolved — no canonical attribution shown | $55.83 | 1.1% | 3 | 2025 |
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $40.17 | 0.8% | 2 | 2025 |
| Grifols USA, LLC | Unresolved — no canonical attribution shown | $27.75 | 0.6% | 1 | 2025 |
| Neurelis, Inc. |
Neurelis, Inc. exact · evidence 2025-02-20 |
$20.10 | 0.4% | 1 | 2025 |
| Teva Pharmaceuticals USA, Inc. | Unresolved — no canonical attribution shown | $18.66 | 0.4% | 1 | 2025 |
| ACADIA Pharmaceuticals Inc | Unresolved — no canonical attribution shown | $14.28 | 0.3% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $4,797.58 | 200 |
| Education | $58.55 | 5 |
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 |
|---|---|---|---|---|---|
| Rystiggo Normalized: rystiggo |
Drug | UCB, Inc. | $565.67 | 17 | 2025 |
Source payment records
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| BRIUMVI Normalized: briumvi |
Drug | TG Therapeutics, Inc. | $561.87 | 20 | 2025 |
Source payment records
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| QULIPTA Normalized: qulipta |
Drug | ABBVIE INC. | $416.50 | 25 | 2025 |
Source payment records
|
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| BOTOX Normalized: botox |
Biological | ABBVIE INC. | $379.79 | 22 | 2025 |
Source payment records
|
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| ULTOMIRIS Normalized: ultomiris |
Biological | Alexion Pharmaceuticals, Inc. | $347.15 | 8 | 2025 |
Source payment records
|
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| UBRELVY Normalized: ubrelvy |
Drug | ABBVIE INC. | $292.07 | 18 | 2025 |
Source payment records
|
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| KESIMPTA Normalized: kesimpta |
Drug | Novartis Pharmaceuticals Corporation | $271.21 | 14 | 2025 |
Source payment records
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| Hizentra Normalized: hizentra |
Biological | CSL Behring | $191.41 | 10 | 2025 |
Source payment records
|
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| VYALEV Normalized: vyalev |
Drug | ABBVIE INC. | $183.85 | 5 | 2025 |
Source payment records
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| VYVGART HYTRULO Normalized: vyvgart hytrulo |
Drug | ARGENX US, INC. | $167.59 | 8 | 2025 |
Source payment records
|
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| INGREZZA Normalized: ingrezza |
Drug | Neurocrine BioSciences, Inc. | $163.63 | 3 | 2025 |
Source payment records
|
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| CREXONT Normalized: crexont |
Drug | Amneal Pharmaceuticals LLC | $153.26 | 12 | 2025 |
Source payment records
|
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| NURTEC ODT Normalized: nurtec odt |
Drug | PFIZER INC. | $127.36 | 7 | 2025 |
Source payment records
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| ZAVZPRET Normalized: zavzpret |
Drug | PFIZER INC. | $127.36 | 7 | 2025 |
Source payment records
|
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| HYQVIA Normalized: hyqvia |
Biological | Takeda Pharmaceuticals U.S.A., Inc. | $111.81 | 4 | 2025 |
Source payment records
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| Albuked Normalized: albuked |
Biological | Kedrion Biopharma, Inc. | $109.94 | 1 | 2025 |
Source payment records
|
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| GAMMAKED Normalized: gammaked |
Biological | Kedrion Biopharma, Inc. | $109.94 | 1 | 2025 |
Source payment records
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| KEDRAB Normalized: kedrab |
Biological | Kedrion Biopharma, Inc. | $109.94 | 1 | 2025 |
Source payment records
|
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| KOATE Normalized: koate |
Biological | Kedrion Biopharma, Inc. | $109.94 | 1 | 2025 |
Source payment records
|
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| RhoGAM Ultra-Filtered PLUS Normalized: rhogam ultra filtered plus |
Biological | Kedrion Biopharma, Inc. | $109.94 | 1 | 2025 |
Source payment records
|
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| SOLITAIRE X Normalized: solitaire x |
Device | Medtronic, Inc. | $101.56 | 1 | 2025 |
Source payment records
|
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| UPLIZNA Normalized: uplizna |
Biological | Amgen Inc. | $100.29 | 6 | 2025 |
Source payment records
|
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| VYEPTI Normalized: vyepti |
Biological | Lundbeck LLC | $99.29 | 4 | 2025 |
Source payment records
|
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| Xeomin Normalized: xeomin |
Biological | Merz Pharmaceuticals, LLC | $80.92 | 3 | 2025 |
Source payment records
|
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| Dysport Normalized: dysport |
Drug | Ipsen Biopharmaceuticals, Inc | $72.24 | 3 | 2025 |
Source payment records
|
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| KISUNLA Normalized: kisunla |
Drug | Lilly USA, LLC | $59.76 | 4 | 2025 |
Source payment records
|
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| Leqembi Normalized: leqembi |
Drug | Eisai Inc. | $57.91 | 3 | 2025 |
Source payment records
|
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| Ocrevus Zunovo Normalized: ocrevus zunovo |
Biological | Genentech USA, Inc. | $56.36 | 3 | 2025 |
Source payment records
|
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| ZEPOSIA Normalized: zeposia |
Drug | Celgene Corporation | $55.83 | 3 | 2025 |
Source payment records
|
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| AMPYRA Normalized: ampyra |
Drug | Merz Pharmaceuticals, LLC | $52.09 | 2 | 2025 |
Source payment records
|
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| INBRIJA Normalized: inbrija |
Drug | Merz Pharmaceuticals, LLC | $52.09 | 2 | 2025 |
Source payment records
|
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| VUMERITY Normalized: vumerity |
Drug | Biogen, Inc. | $48.20 | 2 | 2025 |
Source payment records
|
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| SPINRAZA Normalized: spinraza |
Biological | Biogen, Inc. | $45.09 | 2 | 2025 |
Source payment records
|
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| AMYVID Normalized: amyvid |
Drug | Lilly USA, LLC | $45.07 | 3 | 2025 |
Source payment records
|
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| WAINUA Normalized: wainua |
Drug | AstraZeneca Pharmaceuticals LP | $40.17 | 2 | 2025 |
Source payment records
|
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| Gamunex-C Normalized: gamunex c |
Biological | Grifols USA, LLC | $27.75 | 1 | 2025 |
Source payment records
|
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| Zilbrysq Normalized: zilbrysq |
Drug | UCB, Inc. | $27.36 | 1 | 2025 |
Source payment records
|
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| VALTOCO Normalized: valtoco |
Drug | Neurelis, Inc. | $20.10 | 1 | 2025 |
Source payment records
|
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| Nayzilam Normalized: nayzilam |
Drug | UCB, Inc. | $19.39 | 1 | 2025 |
Source payment records
|
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| AUSTEDO XR Normalized: austedo xr |
Drug | Teva Pharmaceuticals USA, Inc. | $18.66 | 1 | 2025 |
Source payment records
|
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| QALSODY Normalized: qalsody |
Drug | Biogen, Inc. | $18.17 | 1 | 2025 |
Source payment records
|
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| Ocrevus Normalized: ocrevus |
Biological | Genentech USA, Inc. | $16.29 | 1 | 2025 |
Source payment records
|
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| NUPLAZID Normalized: nuplazid |
Drug | ACADIA Pharmaceuticals Inc | $14.28 | 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 |
|---|---|---|---|---|---|---|
| GAMMAKED gammaked |
2025 | Gammaked | 2024 | 27 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| Gamunex-C gamunex c |
2025 | Gamunex-C | 2024 | 13 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| NURTEC ODT nurtec odt |
2025 | Nurtec Odt | 2024 | 21 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| UBRELVY ubrelvy |
2025 | Ubrelvy | 2024 | 32 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 | UBRELVY open payments reported associated product |
CMS Open Payments — General Payments 299803 supporting records · 61203 recipient NPIs · example record 1201352530 |
Ubrelvy · 2024 Exact normalized brand match · 1 Part D row |
32 | suppressed by CMS |
| CSL Behring Exact reporting entity; no affiliate inference |
2025 | Privigen open payments reported associated product |
CMS Open Payments — General Payments 464 supporting records · 289 recipient NPIs · example record 1232339064 |
Privigen · 2024 Exact normalized brand match · 1 Part D row |
37 | suppressed by CMS |
| Grifols USA, LLC Exact reporting entity; no affiliate inference |
2025 | Gamunex-C open payments reported associated product |
CMS Open Payments — General Payments 3977 supporting records · 2134 recipient NPIs · example record 1249529381 |
Gamunex-C · 2024 Exact normalized brand match · 1 Part D row |
13 | suppressed by CMS |
| Kedrion Biopharma, Inc. Exact reporting entity; no affiliate inference |
2025 | GAMMAKED open payments reported associated product |
CMS Open Payments — General Payments 761 supporting records · 541 recipient NPIs · example record 1206766586 |
Gammaked · 2024 Exact normalized brand match · 1 Part D row |
27 | suppressed by CMS |
| PFIZER INC. Exact reporting entity; no affiliate inference |
2025 | NURTEC ODT open payments reported associated product |
CMS Open Payments — General Payments 217574 supporting records · 54025 recipient NPIs · example record 1228794063 |
Nurtec Odt · 2024 Exact normalized brand match · 1 Part D row |
21 | suppressed by CMS |
| Takeda Pharmaceuticals U.S.A., Inc. Exact reporting entity; no affiliate inference |
2025 | GAMMAGARD LIQUID open payments reported associated product |
CMS Open Payments — General Payments 29 supporting records · 8 recipient NPIs · example record 1223786557 |
Gammagard Liquid · 2024 Exact normalized brand match · 1 Part D row |
14 | 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 |
|---|---|---|---|
| Gabapentin | Gabapentin | 179 | 67 |
| Donepezil Hcl | Donepezil Hcl | 100 | 28 |
| Duloxetine Hcl | Duloxetine Hcl | 97 | 36 |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 85 | 32 |
| Ropinirole Hcl | Ropinirole Hcl | 81 | 23 |
| Sodium Chloride | 0.9 % Sodium Chloride | 80 | 11 |
| Primidone | Primidone | 79 | 22 |
| Mirtazapine | Mirtazapine | 67 | 25 |
| Levetiracetam | Levetiracetam | 64 | 15 |
| Memantine Hcl | Memantine Hcl | 63 | 18 |
| Lamotrigine | Lamotrigine | 52 | 11 |
| Pregabalin | Pregabalin | 42 | 16 |
| Sumatriptan Succinate | Sumatriptan Succinate | 40 | suppressed |
| Topiramate | Topiramate | 38 | 12 |
| Privigen | Immun Glob G(Igg)/Pro/Iga 0-50 | 37 | suppressed |
| Pramipexole Dihydrochloride | Pramipexole Di-Hcl | 36 | 11 |
| Nortriptyline Hcl | Nortriptyline Hcl | 35 | 19 |
| Tizanidine Hcl | Tizanidine Hcl | 34 | 17 |
| Trazodone Hcl | Trazodone Hcl | 34 | suppressed |
| Octagam | Immun Globg(Igg)/Malt/Iga Ov50 | 32 | suppressed |
| Ubrelvy | Ubrogepant | 32 | suppressed |
| Aimovig Autoinjector | Erenumab-Aooe | 31 | suppressed |
| Escitalopram Oxalate | Escitalopram Oxalate | 31 | 13 |
| Pyridostigmine Bromide | Pyridostigmine Bromide | 31 | 11 |
| Zonisamide | Zonisamide | 29 | suppressed |
| Gammaked | Immune Globul G/Gly/Iga Avg 46 | 27 | suppressed |
| Ketorolac Tromethamine | Ketorolac Tromethamine | 27 | suppressed |
| Propranolol Hcl Er | Propranolol Hcl | 25 | suppressed |
| Propranolol Hcl | Propranolol Hcl | 24 | suppressed |
| Emgality Pen | Galcanezumab-Gnlm | 23 | suppressed |
| Ondansetron Hcl | Ondansetron Hcl/Pf | 23 | suppressed |
| Clonazepam | Clonazepam | 22 | suppressed |
| Diazepam | Diazepam | 22 | 17 |
| Diphenhydramine Hcl | Diphenhydramine Hcl | 21 | suppressed |
| Nurtec Odt | Rimegepant Sulfate | 21 | suppressed |
| Rivastigmine | Rivastigmine Tartrate | 19 | suppressed |
| Azathioprine | Azathioprine | 18 | suppressed |
| Omeprazole | Omeprazole | 18 | suppressed |
| Prednisone | Prednisone | 18 | suppressed |
| Rizatriptan | Rizatriptan Benzoate | 18 | suppressed |
| Tramadol Hcl | Tramadol Hcl | 18 | suppressed |
| Baclofen | Baclofen | 17 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 14 | suppressed |
| Clopidogrel | Clopidogrel Bisulfate | 14 | suppressed |
| Gammagard Liquid | Immun Glob G(Igg)/Gly/Iga Ov50 | 14 | suppressed |
| Glycopyrrolate | Glycopyrrolate | 14 | suppressed |
| Lacosamide | Lacosamide | 14 | suppressed |
| Gamunex-C | Immune Globul G/Gly/Iga Avg 46 | 13 | suppressed |
| Alprazolam | Alprazolam | 12 | suppressed |
| Rivastigmine | Rivastigmine | 12 | suppressed |
| Carisoprodol | Carisoprodol | 11 | suppressed |
| Divalproex Sodium Er | Divalproex Sodium | 11 | suppressed |
| Eszopiclone | Eszopiclone | 11 | suppressed |
| Gammaplex | Immun Glob G(Igg)/Gly/Iga 0-50 | 11 | suppressed |
| Quetiapine Fumarate | Quetiapine Fumarate | 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 | $4,856.13 · 205 records | ABBVIE INC. | AMPYRA, AMYVID, AUSTEDO XR, Albuked, BOTOX, BRIUMVI, CREXONT, Dysport, GAMMAKED, Gamunex-C, HYQVIA, Hizentra, INBRIJA, INGREZZA, KEDRAB, KESIMPTA, KISUNLA, KOATE, Leqembi, NUPLAZID, NURTEC ODT, Nayzilam, Ocrevus, Ocrevus Zunovo, QALSODY, QULIPTA, RhoGAM Ultra-Filtered PLUS, Rystiggo, SOLITAIRE X, SPINRAZA, UBRELVY, ULTOMIRIS, UPLIZNA, VALTOCO, VUMERITY, VYALEV, VYEPTI, VYVGART HYTRULO, WAINUA, Xeomin, ZAVZPRET, ZEPOSIA, Zilbrysq | 6 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Gammaked 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