Payment overview · 2025
General Payments
$42,552.42
50 reported records · 6 companies
Healthcare provider profile · identity verified
Lin Zhang
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology · SACRAMENTO, CA · NPI 1245215946
Verified facts
What the public records show
CMS Open Payments records show Lin Zhang received $42,552.42 in general payments during 2025 across 50 reported records.
MDD US Operations, LLC accounted for 92.2% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 6 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Gocovri.
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 Apokyn as an associated drug or biological on 1207 records involving 338 distinct recipient NPIs. Public Medicare Part D data also shows 34 claims for Apokyn 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 103 claims for Gocovri 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 Xadago as an associated drug or biological on 139 records involving 79 distinct recipient NPIs. Public Medicare Part D data also shows 52 claims for Xadago 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 AUSTEDO as an associated drug or biological on 28 records involving 15 distinct recipient NPIs. Public Medicare Part D data also shows 23 claims for Austedo 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 |
|---|---|---|---|---|---|
| MDD US Operations, LLC | Unresolved — no canonical attribution shown | $39,224.22 | 92.2% | 41 | 2025 |
| ORPHALAN INC | Unresolved — no canonical attribution shown | $1,800.00 | 4.2% | 1 | 2025 |
| Boston Scientific Corporation | Unresolved — no canonical attribution shown | $1,095.28 | 2.6% | 5 | 2025 |
| Teva Pharmaceuticals USA, Inc. | Unresolved — no canonical attribution shown | $160.61 | 0.4% | 1 | 2025 |
| BeiGene USA, Inc. | Unresolved — no canonical attribution shown | $150.00 | 0.3% | 1 | 2025 |
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $122.31 | 0.3% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Honoraria | $33,540.00 | 10 |
| Travel and Lodging | $6,654.36 | 22 |
| Food and Beverage | $1,358.06 | 17 |
| Consulting Fee | $1,000.00 | 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 |
|---|---|---|---|---|---|
| Gocovri Normalized: gocovri |
Drug | MDD US Operations, LLC | $23,652.37 | 24 | 2025 |
Source payment records
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| CUVRIOR Normalized: cuvrior |
Drug | ORPHALAN INC | $1,800.00 | 1 | 2025 |
Source payment records
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| Vercise Normalized: vercise |
Device | Boston Scientific Corporation | $1,095.28 | 5 | 2025 |
Source payment records
|
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| AUSTEDO XR Normalized: austedo xr |
Drug | Teva Pharmaceuticals USA, Inc. | $160.61 | 1 | 2025 |
Source payment records
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| BRUKINSA Normalized: brukinsa |
Drug | BeiGene USA, Inc. | $150.00 | 1 | 2025 |
Source payment records
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| Qelbree Normalized: qelbree |
Drug | MDD US Operations, LLC | $28.82 | 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 |
|---|---|---|---|---|---|---|
| Gocovri gocovri |
2025 | Gocovri | 2024 | 103 | 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 |
|---|---|---|---|---|---|---|
| MDD US Operations, LLC Exact reporting entity; no affiliate inference |
2025 | Apokyn open payments reported associated product |
CMS Open Payments — General Payments 1207 supporting records · 338 recipient NPIs · example record 1241843684 |
Apokyn · 2024 Exact normalized brand match · 1 Part D row |
34 | 11 |
| 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 |
103 | 19 |
| MDD US Operations, LLC Exact reporting entity; no affiliate inference |
2025 | Xadago open payments reported associated product |
CMS Open Payments — General Payments 139 supporting records · 79 recipient NPIs · example record 1241843808 |
Xadago · 2024 Exact normalized brand match · 1 Part D row |
52 | suppressed by CMS |
| Teva Pharmaceuticals USA, Inc. Exact reporting entity; no affiliate inference |
2025 | AUSTEDO open payments reported associated product |
CMS Open Payments — General Payments 28 supporting records · 15 recipient NPIs · example record 1247249192 |
Austedo · 2024 Exact normalized brand match · 1 Part D row |
23 | 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 |
|---|---|---|---|
| Carbidopa-Levodopa | Carbidopa/Levodopa | 471 | 118 |
| Rytary | Carbidopa/Levodopa | 329 | 71 |
| Carbidopa-Levodopa Er | Carbidopa/Levodopa | 136 | 35 |
| Nourianz | Istradefylline | 131 | 22 |
| Neupro | Rotigotine | 122 | 25 |
| Ropinirole Er | Ropinirole Hcl | 114 | 30 |
| Droxidopa | Droxidopa | 108 | suppressed |
| Trazodone Hcl | Trazodone Hcl | 104 | 33 |
| Gocovri | Amantadine Hcl | 103 | 19 |
| Clonazepam | Clonazepam | 99 | 19 |
| Primidone | Primidone | 99 | 24 |
| Gabapentin | Gabapentin | 97 | 28 |
| Rasagiline Mesylate | Rasagiline Mesylate | 85 | 19 |
| Memantine Hcl | Memantine Hcl | 71 | 15 |
| Quetiapine Fumarate | Quetiapine Fumarate | 66 | 14 |
| Meloxicam | Meloxicam | 63 | 11 |
| Xadago | Safinamide Mesylate | 52 | suppressed |
| Baclofen | Baclofen | 43 | 14 |
| Buspirone Hcl | Buspirone Hcl | 38 | suppressed |
| Entacapone | Entacapone | 38 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 35 | 12 |
| Apokyn | Apomorphine Hcl | 34 | 11 |
| Amitriptyline Hcl | Amitriptyline Hcl | 30 | suppressed |
| Citalopram Hbr | Citalopram Hydrobromide | 29 | suppressed |
| Donepezil Hcl | Donepezil Hcl | 29 | suppressed |
| Amantadine | Amantadine Hcl | 28 | 12 |
| Ingrezza | Valbenazine Tosylate | 28 | suppressed |
| Trihexyphenidyl Hcl | Trihexyphenidyl Hcl | 28 | suppressed |
| Pramipexole Er | Pramipexole Di-Hcl | 27 | suppressed |
| Diazepam | Diazepam | 26 | suppressed |
| Topiramate | Topiramate | 26 | suppressed |
| Midodrine Hcl | Midodrine Hcl | 24 | suppressed |
| Pramipexole Dihydrochloride | Pramipexole Di-Hcl | 24 | suppressed |
| Tizanidine Hcl | Tizanidine Hcl | 24 | suppressed |
| Austedo | Deutetrabenazine | 23 | suppressed |
| Horizant | Gabapentin Enacarbil | 22 | suppressed |
| Levetiracetam | Levetiracetam | 22 | suppressed |
| Nuplazid | Pimavanserin Tartrate | 22 | suppressed |
| Mirtazapine | Mirtazapine | 20 | suppressed |
| Rivastigmine | Rivastigmine Tartrate | 19 | suppressed |
| Inbrija | Levodopa | 18 | suppressed |
| Nabumetone | Nabumetone | 18 | suppressed |
| Pregabalin | Pregabalin | 18 | suppressed |
| Ramelteon | Ramelteon | 18 | suppressed |
| Modafinil | Modafinil | 17 | suppressed |
| Sumatriptan Succinate | Sumatriptan Succinate | 17 | suppressed |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 16 | suppressed |
| Propranolol Hcl | Propranolol Hcl | 16 | suppressed |
| Tetrabenazine | Tetrabenazine | 16 | suppressed |
| Duloxetine Hcl | Duloxetine Hcl | 14 | suppressed |
| Carbidopa | Carbidopa | 13 | suppressed |
| Escitalopram Oxalate | Escitalopram Oxalate | 13 | suppressed |
| Tolterodine Tartrate Er | Tolterodine Tartrate | 13 | suppressed |
| Ongentys | Opicapone | 12 | suppressed |
| Verapamil Er | Verapamil Hcl | 12 | suppressed |
| Alprazolam | Alprazolam | 11 | suppressed |
| Propranolol Hcl Er | Propranolol Hcl | 11 | suppressed |
| Verapamil Hcl | 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 | $42,552.42 · 50 records | MDD US Operations, LLC | AUSTEDO XR, BRUKINSA, CUVRIOR, Gocovri, Qelbree, Vercise | 4 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Gocovri play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with MDD US Operations, 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