Payment overview · 2025
General Payments
$3,160.15
128 reported records · 36 companies
Healthcare provider profile · identity verified
David P Williams, M.D.
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology · ATLANTA, GA · NPI 1750355962
Verified facts
What the public records show
CMS Open Payments records show David P Williams, M.D. received $3,160.15 in general payments during 2025 across 128 reported records.
UCB, Inc. accounted for 14.4% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 45 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Gamunex-C, Gocovri, Nurtec Odt.
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 119 claims for Gamunex-C by this doctor in 2024.
MDD US Operations, 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 Gocovri as an associated drug or biological on 3202 records involving 1029 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Gocovri 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 31 claims for Nurtec Odt 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 |
|---|---|---|---|---|---|
| UCB, Inc. | Unresolved — no canonical attribution shown | $455.64 | 14.4% | 10 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $233.00 | 7.4% | 12 | 2025 |
| PFIZER INC. | Unresolved — no canonical attribution shown | $206.74 | 6.5% | 13 | 2025 |
| TG Therapeutics, Inc. | Unresolved — no canonical attribution shown | $170.49 | 5.4% | 6 | 2025 |
| Celgene Corporation | Unresolved — no canonical attribution shown | $157.54 | 5.0% | 6 | 2025 |
| Biogen, Inc. | Unresolved — no canonical attribution shown | $156.63 | 5.0% | 7 | 2025 |
| Grifols USA, LLC | Unresolved — no canonical attribution shown | $126.36 | 4.0% | 5 | 2025 |
| ARGENX US, INC. | Unresolved — no canonical attribution shown | $122.99 | 3.9% | 4 | 2025 |
| Lundbeck LLC | Unresolved — no canonical attribution shown | $118.08 | 3.7% | 5 | 2025 |
| Novartis Pharmaceuticals Corporation | Unresolved — no canonical attribution shown | $105.00 | 3.3% | 4 | 2025 |
| ACADIA Pharmaceuticals Inc | Unresolved — no canonical attribution shown | $103.87 | 3.3% | 5 | 2025 |
| Eisai Inc. | Unresolved — no canonical attribution shown | $100.48 | 3.2% | 4 | 2025 |
| Janssen Biotech, Inc. | Unresolved — no canonical attribution shown | $96.01 | 3.0% | 3 | 2025 |
| Lilly USA, LLC | Unresolved — no canonical attribution shown | $94.80 | 3.0% | 5 | 2025 |
| Takeda Pharmaceuticals U.S.A., Inc. | Unresolved — no canonical attribution shown | $89.37 | 2.8% | 3 | 2025 |
| Axsome Therapeutics, Inc. | Unresolved — no canonical attribution shown | $81.79 | 2.6% | 3 | 2025 |
| HARMONY BIOSCIENCES LLC | Unresolved — no canonical attribution shown | $78.81 | 2.5% | 3 | 2025 |
| CSL Behring | Unresolved — no canonical attribution shown | $62.54 | 2.0% | 2 | 2025 |
| Otsuka America Pharmaceutical, Inc. | Unresolved — no canonical attribution shown | $60.33 | 1.9% | 2 | 2025 |
| Neurocrine BioSciences, Inc. | Unresolved — no canonical attribution shown | $56.80 | 1.8% | 2 | 2025 |
| Teva Pharmaceuticals USA, Inc. | Unresolved — no canonical attribution shown | $56.71 | 1.8% | 3 | 2025 |
| Aucta Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $53.33 | 1.7% | 2 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $52.35 | 1.7% | 3 | 2025 |
| MDD US Operations, LLC | Unresolved — no canonical attribution shown | $42.84 | 1.4% | 2 | 2025 |
| Amneal Pharmaceuticals LLC | Unresolved — no canonical attribution shown | $34.81 | 1.1% | 2 | 2025 |
| SK Life Science, Inc. |
SK Life Science, Inc. exact · evidence 2025-04-03 |
$33.76 | 1.1% | 1 | 2025 |
| Medtronic, Inc. |
Medtronic, Inc. exact · evidence 2025-07-22 |
$30.10 | 0.9% | 2 | 2025 |
| GENZYME CORPORATION | Unresolved — no canonical attribution shown | $28.16 | 0.9% | 1 | 2025 |
| JAZZ PHARMACEUTICALS INC. | Unresolved — no canonical attribution shown | $22.94 | 0.7% | 1 | 2025 |
| Alexion Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $22.38 | 0.7% | 1 | 2025 |
| Neurelis, Inc. |
Neurelis, Inc. exact · evidence 2025-02-20 |
$19.11 | 0.6% | 1 | 2025 |
| OptumHealth Care Solutions, LLC | Unresolved — no canonical attribution shown | $19.01 | 0.6% | 1 | 2025 |
| Tris Pharma Inc | Unresolved — no canonical attribution shown | $18.65 | 0.6% | 1 | 2025 |
| Genentech USA, Inc. | Unresolved — no canonical attribution shown | $16.69 | 0.5% | 1 | 2025 |
| Vanda Pharmaceuticals Inc. | Unresolved — no canonical attribution shown | $16.63 | 0.5% | 1 | 2025 |
| Inspire Medical Systems, Inc. | Unresolved — no canonical attribution shown | $15.41 | 0.5% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $2,960.15 | 127 |
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $200.00 | 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 |
|---|---|---|---|---|---|
| Zilbrysq Normalized: zilbrysq |
Drug | UCB, Inc. | $301.78 | 4 | 2025 |
Source payment records
|
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| QULIPTA Normalized: qulipta |
Drug | ABBVIE INC. | $229.81 | 11 | 2025 |
Source payment records
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| BRIUMVI Normalized: briumvi |
Drug | TG Therapeutics, Inc. | $170.49 | 6 | 2025 |
Source payment records
|
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| ZEPOSIA Normalized: zeposia |
Drug | Celgene Corporation | $157.54 | 6 | 2025 |
Source payment records
|
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| NURTEC ODT Normalized: nurtec odt |
Drug | PFIZER INC. | $139.25 | 9 | 2025 |
Source payment records
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| ZAVZPRET Normalized: zavzpret |
Drug | PFIZER INC. | $139.25 | 9 | 2025 |
Source payment records
|
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| Gamunex-C Normalized: gamunex c |
Biological | Grifols USA, LLC | $126.36 | 5 | 2025 |
Source payment records
|
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| VYVGART HYTRULO Normalized: vyvgart hytrulo |
Drug | ARGENX US, INC. | $122.99 | 4 | 2025 |
Source payment records
|
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| VYEPTI Normalized: vyepti |
Biological | Lundbeck LLC | $118.08 | 5 | 2025 |
Source payment records
|
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| TYSABRI Normalized: tysabri |
Biological | Biogen, Inc. | $115.49 | 5 | 2025 |
Source payment records
|
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| VUMERITY Normalized: vumerity |
Drug | Biogen, Inc. | $115.49 | 5 | 2025 |
Source payment records
|
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| LEQEMBI Normalized: leqembi |
Drug | Biogen, Inc., Eisai Inc. | $113.28 | 5 | 2025 |
Source payment records
|
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| Rystiggo Normalized: rystiggo |
Drug | UCB, Inc. | $106.11 | 4 | 2025 |
Source payment records
|
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| KESIMPTA Normalized: kesimpta |
Drug | Novartis Pharmaceuticals Corporation | $105.00 | 4 | 2025 |
Source payment records
|
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| NUPLAZID Normalized: nuplazid |
Drug | ACADIA Pharmaceuticals Inc | $103.87 | 5 | 2025 |
Source payment records
|
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| KISUNLA Normalized: kisunla |
Drug | Lilly USA, LLC | $94.80 | 5 | 2025 |
Source payment records
|
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| HYQVIA Normalized: hyqvia |
Biological | Takeda Pharmaceuticals U.S.A., Inc. | $89.37 | 3 | 2025 |
Source payment records
|
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| Symbravo Normalized: symbravo |
Drug | Axsome Therapeutics, Inc. | $81.79 | 3 | 2025 |
Source payment records
|
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| WAKIX Normalized: wakix |
Drug | HARMONY BIOSCIENCES LLC | $78.81 | 3 | 2025 |
Source payment records
|
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| OCTAGAM IMMUNE GLOBULIN (HUMAN) Normalized: octagam immune globulin human |
Drug | PFIZER INC. | $67.49 | 4 | 2025 |
Source payment records
|
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| PANZYGA Normalized: panzyga |
Biological | PFIZER INC. | $67.49 | 4 | 2025 |
Source payment records
|
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| Hizentra Normalized: hizentra |
Biological | CSL Behring | $62.54 | 2 | 2025 |
Source payment records
|
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| REXULTI Normalized: rexulti |
Drug | Otsuka America Pharmaceutical, Inc. | $60.33 | 2 | 2025 |
Source payment records
|
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| INGREZZA Normalized: ingrezza |
Drug | Neurocrine BioSciences, Inc. | $56.80 | 2 | 2025 |
Source payment records
|
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| AUSTEDO XR Normalized: austedo xr |
Drug | Teva Pharmaceuticals USA, Inc. | $56.71 | 3 | 2025 |
Source payment records
|
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| Motpoly XR Normalized: motpoly xr |
Drug | Aucta Pharmaceuticals, Inc. | $53.33 | 2 | 2025 |
Source payment records
|
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| UPLIZNA Normalized: uplizna |
Biological | Amgen Inc. | $52.35 | 3 | 2025 |
Source payment records
|
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| Briviact Normalized: briviact |
Drug | UCB, Inc. | $47.75 | 2 | 2025 |
Source payment records
|
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| Gocovri Normalized: gocovri |
Drug | MDD US Operations, LLC | $42.84 | 2 | 2025 |
Source payment records
|
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| AMYVID Normalized: amyvid |
Drug | Lilly USA, LLC | $38.21 | 2 | 2025 |
Source payment records
|
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| CREXONT Normalized: crexont |
Drug | Amneal Pharmaceuticals LLC | $34.81 | 2 | 2025 |
Source payment records
|
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| UBRELVY Normalized: ubrelvy |
Drug | ABBVIE INC. | $32.24 | 2 | 2025 |
Source payment records
|
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| MINIMED 780G Normalized: minimed 780g |
Device | Medtronic, Inc. | $30.10 | 2 | 2025 |
Source payment records
|
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| SPINRAZA Normalized: spinraza |
Biological | Biogen, Inc. | $28.34 | 1 | 2025 |
Source payment records
|
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| AVONEX Normalized: avonex |
Biological | Biogen, Inc. | $23.67 | 1 | 2025 |
Source payment records
|
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| XYWAV Normalized: xywav |
Drug | JAZZ PHARMACEUTICALS INC. | $22.94 | 1 | 2025 |
Source payment records
|
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| ULTOMIRIS Normalized: ultomiris |
Biological | Alexion Pharmaceuticals, Inc. | $22.38 | 1 | 2025 |
Source payment records
|
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| VALTOCO Normalized: valtoco |
Drug | Neurelis, Inc. | $19.11 | 1 | 2025 |
Source payment records
|
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| EITAN MEDICAL Normalized: eitan medical |
Device | OptumHealth Care Solutions, LLC | $19.01 | 1 | 2025 |
Source payment records
|
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| VIVIFY HEALTH CARE TEAM PORTAL 001 Normalized: vivify health care team portal 001 |
Device | OptumHealth Care Solutions, LLC | $19.01 | 1 | 2025 |
Source payment records
|
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| Dyanavel XR Normalized: dyanavel xr |
Drug | Tris Pharma Inc | $18.65 | 1 | 2025 |
Source payment records
|
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| Ocrevus Zunovo Normalized: ocrevus zunovo |
Biological | Genentech USA, Inc. | $16.69 | 1 | 2025 |
Source payment records
|
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| PONVORY Normalized: ponvory |
Drug | Vanda Pharmaceuticals Inc. | $16.63 | 1 | 2025 |
Source payment records
|
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| INSPIRE Normalized: inspire |
Device | Inspire Medical Systems, Inc. | $15.41 | 1 | 2025 |
Source payment records
|
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| BOTOX Normalized: botox |
Biological | ABBVIE INC. | $14.52 | 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
| Open Payments product | Payment year | Part D brand | Part D year | Claims | Match method | Source |
|---|---|---|---|---|---|---|
| Gamunex-C gamunex c |
2025 | Gamunex-C | 2024 | 119 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| Gocovri gocovri |
2025 | Gocovri | 2024 | 19 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| NURTEC ODT nurtec odt |
2025 | Nurtec Odt | 2024 | 31 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 |
|---|---|---|---|---|---|---|
| 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 |
119 | suppressed by CMS |
| MDD US Operations, LLC Exact reporting entity; no affiliate inference |
2025 | Gocovri open payments reported associated product |
CMS Open Payments — General Payments 3202 supporting records · 1029 recipient NPIs · example record 1241843637 |
Gocovri · 2024 Exact normalized brand match · 1 Part D row |
19 | 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 |
31 | 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 |
|---|---|---|---|
| Donepezil Hcl | Donepezil Hcl | 331 | 99 |
| Gabapentin | Gabapentin | 308 | 104 |
| Memantine Hcl | Memantine Hcl | 273 | 76 |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 223 | 60 |
| Pregabalin | Pregabalin | 148 | 33 |
| Prednisone | Prednisone | 135 | 23 |
| Gamunex-C | Immune Globul G/Gly/Iga Avg 46 | 119 | suppressed |
| Duloxetine Hcl | Duloxetine Hcl | 106 | 28 |
| Levetiracetam | Levetiracetam | 87 | 30 |
| Sertraline Hcl | Sertraline Hcl | 67 | 24 |
| Oxcarbazepine | Oxcarbazepine | 65 | 18 |
| Quetiapine Fumarate | Quetiapine Fumarate | 59 | 11 |
| Mirtazapine | Mirtazapine | 53 | 19 |
| Escitalopram Oxalate | Escitalopram Oxalate | 48 | 19 |
| Lamotrigine | Lamotrigine | 47 | 13 |
| Clonazepam | Clonazepam | 43 | 13 |
| Topiramate | Topiramate | 43 | 15 |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 42 | 15 |
| Rizatriptan | Rizatriptan Benzoate | 41 | 15 |
| Sumatriptan Succinate | Sumatriptan Succinate | 41 | suppressed |
| Trazodone Hcl | Trazodone Hcl | 40 | suppressed |
| Pyridostigmine Bromide | Pyridostigmine Bromide | 39 | 15 |
| Gammaplex | Immun Glob G(Igg)/Gly/Iga 0-50 | 38 | suppressed |
| Memantine Hcl Er | Memantine Hcl | 38 | 13 |
| Mycophenolate Mofetil | Mycophenolate Mofetil | 38 | suppressed |
| Primidone | Primidone | 35 | 17 |
| Zonisamide | Zonisamide | 33 | suppressed |
| Carbidopa-Levodopa Er | Carbidopa/Levodopa | 31 | suppressed |
| Nurtec Odt | Rimegepant Sulfate | 31 | suppressed |
| Lacosamide | Lacosamide | 28 | 11 |
| Kesimpta Pen | Ofatumumab | 26 | suppressed |
| Nortriptyline Hcl | Nortriptyline Hcl | 25 | 11 |
| Entacapone | Entacapone | 24 | suppressed |
| Diazepam | Diazepam | 22 | suppressed |
| Divalproex Sodium Er | Divalproex Sodium | 22 | suppressed |
| Lorazepam | Lorazepam | 22 | 21 |
| Propranolol Hcl | Propranolol Hcl | 22 | suppressed |
| Buspirone Hcl | Buspirone Hcl | 21 | suppressed |
| Clopidogrel | Clopidogrel Bisulfate | 21 | suppressed |
| Emgality Pen | Galcanezumab-Gnlm | 21 | suppressed |
| Pramipexole Dihydrochloride | Pramipexole Di-Hcl | 21 | suppressed |
| Azathioprine | Azathioprine | 19 | suppressed |
| Gocovri | Amantadine Hcl | 19 | suppressed |
| Tramadol Hcl | Tramadol Hcl | 19 | suppressed |
| Methylprednisolone | Methylprednisolone | 18 | 12 |
| Amitriptyline Hcl | Amitriptyline Hcl | 16 | suppressed |
| Bupropion Xl | Bupropion Hcl | 16 | suppressed |
| Levetiracetam Er | Levetiracetam | 16 | suppressed |
| Atorvastatin Calcium | Atorvastatin Calcium | 15 | suppressed |
| Rivastigmine | Rivastigmine | 15 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 14 | suppressed |
| Aimovig Autoinjector | Erenumab-Aooe | 13 | suppressed |
| Galantamine Er | Galantamine Hbr | 13 | suppressed |
| Rivastigmine | Rivastigmine Tartrate | 13 | suppressed |
| Aubagio | Teriflunomide | 12 | suppressed |
| Butalbital-Acetaminophen-Caffe | Butalb/Acetaminophen/Caffeine | 12 | suppressed |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 12 | suppressed |
| Meclizine Hcl | Meclizine Hcl | 12 | suppressed |
| Promethazine Hcl | Promethazine Hcl | 12 | suppressed |
| Citalopram Hbr | Citalopram Hydrobromide | 11 | suppressed |
| Methocarbamol | Methocarbamol | 11 | suppressed |
| Naratriptan Hcl | Naratriptan Hcl | 11 | suppressed |
| Tizanidine Hcl | Tizanidine 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 | $3,160.15 · 128 records | UCB, Inc. | AMYVID, AUSTEDO XR, AVONEX, BOTOX, BRIUMVI, Briviact, CREXONT, Dyanavel XR, EITAN MEDICAL, Gamunex-C, Gocovri, HYQVIA, Hizentra, INGREZZA, INSPIRE, KESIMPTA, KISUNLA, LEQEMBI, MINIMED 780G, Motpoly XR, NUPLAZID, NURTEC ODT, OCTAGAM IMMUNE GLOBULIN (HUMAN), Ocrevus Zunovo, PANZYGA, PONVORY, QULIPTA, REXULTI, Rystiggo, SPINRAZA, Symbravo, TYSABRI, UBRELVY, ULTOMIRIS, UPLIZNA, VALTOCO, VIVIFY HEALTH CARE TEAM PORTAL 001, VUMERITY, VYEPTI, VYVGART HYTRULO, WAKIX, XYWAV, ZAVZPRET, ZEPOSIA, Zilbrysq | 3 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Gamunex-C play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with Grifols USA, LLC?
- 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