Payment overview · 2025
General Payments
$3,298.50
233 reported records · 25 companies
Healthcare provider profile · identity verified
David Chachkhiani, M.D.
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology · OPELOUSAS, LA · NPI 1164953006
Verified facts
What the public records show
CMS Open Payments records show David Chachkhiani, M.D. received $3,298.50 in general payments during 2025 across 233 reported records.
Neurocrine BioSciences, Inc. accounted for 16.8% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 32 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Briviact, Gamunex-C, Ingrezza, Nayzilam, 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 34 claims for Ubrelvy 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 19 claims for Rytary 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 48 claims for Gamunex-C by this doctor in 2024.
Neurocrine BioSciences, 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 INGREZZA as an associated drug or biological on 126456 records involving 27390 distinct recipient NPIs. Public Medicare Part D data also shows 47 claims for Ingrezza 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 43 claims for Nurtec Odt 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 35 claims for Briviact 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 Nayzilam as an associated drug or biological on 9542 records involving 3826 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Nayzilam 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 |
|---|---|---|---|---|---|
| Neurocrine BioSciences, Inc. | Unresolved — no canonical attribution shown | $553.86 | 16.8% | 43 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $360.79 | 10.9% | 37 | 2025 |
| UCB, Inc. | Unresolved — no canonical attribution shown | $308.88 | 9.4% | 22 | 2025 |
| PFIZER INC. | Unresolved — no canonical attribution shown | $272.21 | 8.2% | 14 | 2025 |
| Teva Pharmaceuticals USA, Inc. | Unresolved — no canonical attribution shown | $223.99 | 6.8% | 7 | 2025 |
| ACADIA Pharmaceuticals Inc | Unresolved — no canonical attribution shown | $221.33 | 6.7% | 26 | 2025 |
| SK Life Science, Inc. |
SK Life Science, Inc. exact · evidence 2025-04-03 |
$167.23 | 5.1% | 15 | 2025 |
| JAZZ PHARMACEUTICALS INC. | Unresolved — no canonical attribution shown | $141.33 | 4.3% | 16 | 2025 |
| Lundbeck LLC | Unresolved — no canonical attribution shown | $137.22 | 4.2% | 7 | 2025 |
| Neurelis, Inc. |
Neurelis, Inc. exact · evidence 2025-02-20 |
$119.81 | 3.6% | 6 | 2025 |
| ARGENX US, INC. | Unresolved — no canonical attribution shown | $112.77 | 3.4% | 6 | 2025 |
| Abbott Laboratories | Unresolved — no canonical attribution shown | $105.72 | 3.2% | 1 | 2025 |
| Aucta Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $76.05 | 2.3% | 7 | 2025 |
| Eisai Inc. | Unresolved — no canonical attribution shown | $70.72 | 2.1% | 4 | 2025 |
| Mallinckrodt Hospital Products Inc. | Unresolved — no canonical attribution shown | $68.10 | 2.1% | 3 | 2025 |
| Amneal Pharmaceuticals LLC | Unresolved — no canonical attribution shown | $59.87 | 1.8% | 4 | 2025 |
| Grifols USA, LLC | Unresolved — no canonical attribution shown | $59.87 | 1.8% | 3 | 2025 |
| Janssen Biotech, Inc. | Unresolved — no canonical attribution shown | $53.37 | 1.6% | 3 | 2025 |
| Merz Pharmaceuticals, LLC | Unresolved — no canonical attribution shown | $52.62 | 1.6% | 2 | 2025 |
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $40.40 | 1.2% | 2 | 2025 |
| Biogen, Inc. | Unresolved — no canonical attribution shown | $27.89 | 0.8% | 1 | 2025 |
| Otsuka America Pharmaceutical, Inc. | Unresolved — no canonical attribution shown | $18.68 | 0.6% | 1 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $15.91 | 0.5% | 1 | 2025 |
| Alexion Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $15.14 | 0.5% | 1 | 2025 |
| Genentech USA, Inc. | Unresolved — no canonical attribution shown | $14.74 | 0.5% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $3,211.01 | 232 |
| Education | $87.49 | 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 |
|---|---|---|---|---|---|
| INGREZZA Normalized: ingrezza |
Drug | Neurocrine BioSciences, Inc. | $553.86 | 43 | 2025 |
Source payment records
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| ZAVZPRET Normalized: zavzpret |
Drug | PFIZER INC. | $272.21 | 14 | 2025 |
Source payment records
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| NURTEC ODT Normalized: nurtec odt |
Drug | PFIZER INC. | $241.02 | 12 | 2025 |
Source payment records
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| QULIPTA Normalized: qulipta |
Drug | ABBVIE INC. | $222.42 | 19 | 2025 |
Source payment records
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| NUPLAZID Normalized: nuplazid |
Drug | ACADIA Pharmaceuticals Inc | $221.33 | 26 | 2025 |
Source payment records
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| BOTOX Normalized: botox |
Biological | ABBVIE INC. | $173.99 | 22 | 2025 |
Source payment records
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| Briviact Normalized: briviact |
Drug | UCB, Inc. | $150.96 | 11 | 2025 |
Source payment records
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| EPIDIOLEX Normalized: epidiolex |
Drug | JAZZ PHARMACEUTICALS INC. | $141.33 | 16 | 2025 |
Source payment records
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| AUSTEDO XR Normalized: austedo xr |
Drug | Teva Pharmaceuticals USA, Inc. | $136.50 | 6 | 2025 |
Source payment records
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| VALTOCO Normalized: valtoco |
Drug | Neurelis, Inc. | $119.81 | 6 | 2025 |
Source payment records
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| VYEPTI Normalized: vyepti |
Biological | Lundbeck LLC | $113.72 | 6 | 2025 |
Source payment records
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| VYVGART Normalized: vyvgart |
Drug | ARGENX US, INC. | $112.77 | 6 | 2025 |
Source payment records
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| VYVGART HYTRULO Normalized: vyvgart hytrulo |
Drug | ARGENX US, INC. | $112.77 | 6 | 2025 |
Source payment records
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| JOT DX Normalized: jot dx |
Device | Abbott Laboratories | $105.72 | 1 | 2025 |
Source payment records
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| Nayzilam Normalized: nayzilam |
Drug | UCB, Inc. | $101.25 | 9 | 2025 |
Source payment records
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| LEQEMBI Normalized: leqembi |
Drug | Biogen, Inc., Eisai Inc. | $98.61 | 5 | 2025 |
Source payment records
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| Motpoly XR Normalized: motpoly xr |
Drug | Aucta Pharmaceuticals, Inc. | $76.05 | 7 | 2025 |
Source payment records
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| ACTHAR Normalized: acthar |
Biological | Mallinckrodt Hospital Products Inc. | $68.10 | 3 | 2025 |
Source payment records
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| CREXONT Normalized: crexont |
Drug | Amneal Pharmaceuticals LLC | $59.87 | 4 | 2025 |
Source payment records
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| Gamunex-C Normalized: gamunex c |
Biological | Grifols USA, LLC | $59.87 | 3 | 2025 |
Source payment records
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| AMPYRA Normalized: ampyra |
Drug | Merz Pharmaceuticals, LLC | $52.62 | 2 | 2025 |
Source payment records
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| INBRIJA Normalized: inbrija |
Drug | Merz Pharmaceuticals, LLC | $52.62 | 2 | 2025 |
Source payment records
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| Xeomin Normalized: xeomin |
Biological | Merz Pharmaceuticals, LLC | $52.62 | 2 | 2025 |
Source payment records
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| REXULTI Normalized: rexulti |
Drug | Lundbeck LLC, Otsuka America Pharmaceutical, Inc. | $42.18 | 2 | 2025 |
Source payment records
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| WAINUA Normalized: wainua |
Drug | AstraZeneca Pharmaceuticals LP | $40.40 | 2 | 2025 |
Source payment records
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| UBRELVY Normalized: ubrelvy |
Drug | ABBVIE INC. | $36.18 | 3 | 2025 |
Source payment records
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| Rystiggo Normalized: rystiggo |
Drug | UCB, Inc. | $32.04 | 1 | 2025 |
Source payment records
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| Fintepla Normalized: fintepla |
Drug | UCB, Inc. | $24.63 | 1 | 2025 |
Source payment records
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| VYALEV Normalized: vyalev |
Drug | ABBVIE INC. | $18.50 | 1 | 2025 |
Source payment records
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| UPLIZNA Normalized: uplizna |
Biological | Amgen Inc. | $15.91 | 1 | 2025 |
Source payment records
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| ULTOMIRIS Normalized: ultomiris |
Biological | Alexion Pharmaceuticals, Inc. | $15.14 | 1 | 2025 |
Source payment records
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| Ocrevus Zunovo Normalized: ocrevus zunovo |
Biological | Genentech USA, Inc. | $14.74 | 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 |
|---|---|---|---|---|---|---|
| Briviact briviact |
2025 | Briviact | 2024 | 35 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| Gamunex-C gamunex c |
2025 | Gamunex-C | 2024 | 48 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| INGREZZA ingrezza |
2025 | Ingrezza | 2024 | 47 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| Nayzilam nayzilam |
2025 | Nayzilam | 2024 | 13 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| NURTEC ODT nurtec odt |
2025 | Nurtec Odt | 2024 | 43 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| UBRELVY ubrelvy |
2025 | Ubrelvy | 2024 | 34 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 |
34 | 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 |
19 | 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 |
48 | suppressed by CMS |
| Neurocrine BioSciences, Inc. Exact reporting entity; no affiliate inference |
2025 | INGREZZA open payments reported associated product |
CMS Open Payments — General Payments 126456 supporting records · 27390 recipient NPIs · example record 1242766729 |
Ingrezza · 2024 Exact normalized brand match · 1 Part D row |
47 | 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 |
43 | 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 |
35 | suppressed by CMS |
| UCB, Inc. Exact reporting entity; no affiliate inference |
2025 | Nayzilam open payments reported associated product |
CMS Open Payments — General Payments 9542 supporting records · 3826 recipient NPIs · example record 1224348539 |
Nayzilam · 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
Provider-and-drug rows loaded for 2024
| Brand | Generic | Claims | Beneficiaries |
|---|---|---|---|
| Levetiracetam | Levetiracetam | 216 | 34 |
| Gabapentin | Gabapentin | 209 | 52 |
| Donepezil Hcl | Donepezil Hcl | 182 | 41 |
| Propranolol Hcl | Propranolol Hcl | 143 | 36 |
| Memantine Hcl | Memantine Hcl | 125 | 23 |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 117 | 21 |
| Pregabalin | Pregabalin | 108 | 25 |
| Primidone | Primidone | 59 | suppressed |
| Topiramate | Topiramate | 58 | 12 |
| Gamunex-C | Immune Globul G/Gly/Iga Avg 46 | 48 | suppressed |
| Ingrezza | Valbenazine Tosylate | 47 | suppressed |
| Atorvastatin Calcium | Atorvastatin Calcium | 46 | 11 |
| Nurtec Odt | Rimegepant Sulfate | 43 | suppressed |
| Divalproex Sodium | Divalproex Sodium | 42 | 12 |
| Briviact | Brivaracetam | 35 | suppressed |
| Lacosamide | Lacosamide | 35 | suppressed |
| Lamotrigine | Lamotrigine | 35 | suppressed |
| Ubrelvy | Ubrogepant | 34 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 29 | suppressed |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 26 | suppressed |
| Divalproex Sodium Er | Divalproex Sodium | 24 | suppressed |
| Rizatriptan | Rizatriptan Benzoate | 21 | suppressed |
| Phenobarbital | Phenobarbital | 19 | suppressed |
| Rytary | Carbidopa/Levodopa | 19 | suppressed |
| Tizanidine Hcl | Tizanidine Hcl | 16 | suppressed |
| Duloxetine Hcl | Duloxetine Hcl | 15 | suppressed |
| Propranolol Hcl Er | Propranolol Hcl | 15 | suppressed |
| Sumatriptan Succinate | Sumatriptan Succinate | 15 | suppressed |
| Zonisamide | Zonisamide | 15 | suppressed |
| Nayzilam | Midazolam | 13 | suppressed |
| Ondansetron Hcl | Ondansetron Hcl | 13 | suppressed |
| Acetazolamide Er | Acetazolamide | 12 | suppressed |
| Clopidogrel | Clopidogrel Bisulfate | 12 | suppressed |
| Neupro | Rotigotine | 12 | suppressed |
| Oxcarbazepine | Oxcarbazepine | 12 | suppressed |
| Sodium Chloride | 0.9 % Sodium Chloride | 12 | suppressed |
| Acetazolamide | Acetazolamide | 11 | suppressed |
| Valproic Acid | Valproic Acid | 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 | $3,298.50 · 233 records | Neurocrine BioSciences, Inc. | ACTHAR, AMPYRA, AUSTEDO XR, BOTOX, Briviact, CREXONT, EPIDIOLEX, Fintepla, Gamunex-C, INBRIJA, INGREZZA, JOT DX, LEQEMBI, Motpoly XR, NUPLAZID, NURTEC ODT, Nayzilam, Ocrevus Zunovo, QULIPTA, REXULTI, Rystiggo, UBRELVY, ULTOMIRIS, UPLIZNA, VALTOCO, VYALEV, VYEPTI, VYVGART, VYVGART HYTRULO, WAINUA, Xeomin, ZAVZPRET | 7 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Briviact 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