Payment overview · 2025
General Payments
$1,682.34
58 reported records · 15 companies
Healthcare provider profile · identity verified
Michael P Tan, D.O.
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology · ALHAMBRA, CA · NPI 1760419204
Verified facts
What the public records show
CMS Open Payments records show Michael P Tan, D.O. received $1,682.34 in general payments during 2025 across 58 reported records.
Lundbeck LLC accounted for 19.6% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 16 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Gocovri, Ingrezza, Nuplazid, Rexulti.
ACADIA 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 NUPLAZID as an associated drug or biological on 20845 records involving 6448 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Nuplazid 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 ONGENTYS as an associated drug or biological on 728 records involving 311 distinct recipient NPIs. Public Medicare Part D data also shows 54 claims for Ongentys 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 83 claims for Rytary by this doctor in 2024.
Lundbeck 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 REXULTI as an associated drug or biological on 71829 records involving 25812 distinct recipient NPIs. Public Medicare Part D data also shows 148 claims for Rexulti 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 28 claims for Gocovri 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 17 claims for Ingrezza by this doctor in 2024.
Otsuka America Pharmaceutical, 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 NUEDEXTA as an associated drug or biological on 393 records involving 285 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Nuedexta by this doctor in 2024.
Otsuka America Pharmaceutical, 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 REXULTI as an associated drug or biological on 160756 records involving 46288 distinct recipient NPIs. Public Medicare Part D data also shows 148 claims for Rexulti 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 53 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 |
|---|---|---|---|---|---|
| Lundbeck LLC | Unresolved — no canonical attribution shown | $328.86 | 19.6% | 11 | 2025 |
| MDD US Operations, LLC | Unresolved — no canonical attribution shown | $292.80 | 17.4% | 11 | 2025 |
| Teva Pharmaceuticals USA, Inc. | Unresolved — no canonical attribution shown | $268.59 | 16.0% | 6 | 2025 |
| Neurocrine BioSciences, Inc. | Unresolved — no canonical attribution shown | $204.68 | 12.2% | 7 | 2025 |
| ACADIA Pharmaceuticals Inc | Unresolved — no canonical attribution shown | $156.41 | 9.3% | 6 | 2025 |
| Otsuka America Pharmaceutical, Inc. | Unresolved — no canonical attribution shown | $94.70 | 5.6% | 4 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $86.53 | 5.1% | 3 | 2025 |
| UCB, Inc. | Unresolved — no canonical attribution shown | $58.41 | 3.5% | 2 | 2025 |
| Amneal Pharmaceuticals LLC | Unresolved — no canonical attribution shown | $36.73 | 2.2% | 2 | 2025 |
| ANI Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $32.67 | 1.9% | 1 | 2025 |
| JAZZ PHARMACEUTICALS INC. | Unresolved — no canonical attribution shown | $32.36 | 1.9% | 1 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $27.82 | 1.6% | 1 | 2025 |
| SK Life Science, Inc. |
SK Life Science, Inc. exact · evidence 2025-04-03 |
$20.80 | 1.2% | 1 | 2025 |
| Boston Scientific Corporation | Unresolved — no canonical attribution shown | $20.52 | 1.2% | 1 | 2025 |
| ARGENX US, INC. | Unresolved — no canonical attribution shown | $20.46 | 1.2% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $1,564.98 | 56 |
| Education | $111.49 | 1 |
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $5.87 | 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 |
|---|---|---|---|---|---|
| REXULTI Normalized: rexulti |
Drug | Lundbeck LLC, Otsuka America Pharmaceutical, Inc. | $398.50 | 14 | 2025 |
Source payment records
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| INGREZZA Normalized: ingrezza |
Drug | Neurocrine BioSciences, Inc. | $204.68 | 7 | 2025 |
Source payment records
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| AUSTEDO XR Normalized: austedo xr |
Drug | Teva Pharmaceuticals USA, Inc. | $157.10 | 5 | 2025 |
Source payment records
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| NUPLAZID Normalized: nuplazid |
Drug | ACADIA Pharmaceuticals Inc | $156.41 | 6 | 2025 |
Source payment records
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| Gocovri Normalized: gocovri |
Drug | MDD US Operations, LLC | $98.56 | 4 | 2025 |
Source payment records
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| QULIPTA Normalized: qulipta |
Drug | ABBVIE INC. | $86.53 | 3 | 2025 |
Source payment records
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| UBRELVY Normalized: ubrelvy |
Drug | ABBVIE INC. | $86.53 | 3 | 2025 |
Source payment records
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| Nayzilam Normalized: nayzilam |
Drug | UCB, Inc. | $39.00 | 1 | 2025 |
Source payment records
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| CREXONT Normalized: crexont |
Drug | Amneal Pharmaceuticals LLC | $36.73 | 2 | 2025 |
Source payment records
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| PURIFIED CORTROPHIN GEL Normalized: purified cortrophin gel |
Drug | ANI Pharmaceuticals, Inc. | $32.67 | 1 | 2025 |
Source payment records
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| EPIDIOLEX Normalized: epidiolex |
Drug | JAZZ PHARMACEUTICALS INC. | $32.36 | 1 | 2025 |
Source payment records
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| UPLIZNA Normalized: uplizna |
Biological | Amgen Inc. | $27.82 | 1 | 2025 |
Source payment records
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| VYEPTI Normalized: vyepti |
Biological | Lundbeck LLC | $25.06 | 1 | 2025 |
Source payment records
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| WaveWriter Alpha Prime 16 Normalized: wavewriter alpha prime 16 |
Device | Boston Scientific Corporation | $20.52 | 1 | 2025 |
Source payment records
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| VYVGART HYTRULO Normalized: vyvgart hytrulo |
Drug | ARGENX US, INC. | $20.46 | 1 | 2025 |
Source payment records
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| Rystiggo Normalized: rystiggo |
Drug | UCB, Inc. | $19.41 | 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 | 28 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| INGREZZA ingrezza |
2025 | Ingrezza | 2024 | 17 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| NUPLAZID nuplazid |
2025 | Nuplazid | 2024 | 18 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| REXULTI rexulti |
2025 | Rexulti | 2024 | 148 | 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 |
|---|---|---|---|---|---|---|
| ACADIA Pharmaceuticals Inc Exact reporting entity; no affiliate inference |
2025 | NUPLAZID open payments reported associated product |
CMS Open Payments — General Payments 20845 supporting records · 6448 recipient NPIs · example record 1247763852 |
Nuplazid · 2024 Exact normalized brand match · 1 Part D row |
18 | suppressed by CMS |
| Amneal Pharmaceuticals LLC Exact reporting entity; no affiliate inference |
2025 | ONGENTYS open payments reported associated product |
CMS Open Payments — General Payments 728 supporting records · 311 recipient NPIs · example record 1220525547 |
Ongentys · 2024 Exact normalized brand match · 1 Part D row |
54 | 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 |
83 | 15 |
| Lundbeck LLC Exact reporting entity; no affiliate inference |
2025 | REXULTI open payments reported associated product |
CMS Open Payments — General Payments 71829 supporting records · 25812 recipient NPIs · example record 1251759986 |
Rexulti · 2024 Exact normalized brand match · 1 Part D row |
148 | 28 |
| 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 |
28 | 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 |
17 | suppressed by CMS |
| Otsuka America Pharmaceutical, Inc. Exact reporting entity; no affiliate inference |
2025 | NUEDEXTA open payments reported associated product |
CMS Open Payments — General Payments 393 supporting records · 285 recipient NPIs · example record 1227268901 |
Nuedexta · 2024 Exact normalized brand match · 1 Part D row |
18 | suppressed by CMS |
| Otsuka America Pharmaceutical, Inc. Exact reporting entity; no affiliate inference |
2025 | REXULTI open payments reported associated product |
CMS Open Payments — General Payments 160756 supporting records · 46288 recipient NPIs · example record 1227267708 |
Rexulti · 2024 Exact normalized brand match · 1 Part D row |
148 | 28 |
| 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 |
53 | 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 | 368 | 77 |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 297 | 70 |
| Gabapentin | Gabapentin | 287 | 107 |
| Memantine Hcl | Memantine Hcl | 233 | 49 |
| Pregabalin | Pregabalin | 230 | 55 |
| Rexulti | Brexpiprazole | 148 | 28 |
| Duloxetine Hcl | Duloxetine Hcl | 139 | 31 |
| Sertraline Hcl | Sertraline Hcl | 114 | 21 |
| Pramipexole Dihydrochloride | Pramipexole Di-Hcl | 92 | 18 |
| Oxcarbazepine | Oxcarbazepine | 89 | 21 |
| Rytary | Carbidopa/Levodopa | 83 | 15 |
| Lacosamide | Lacosamide | 70 | suppressed |
| Amantadine | Amantadine Hcl | 68 | 15 |
| Levetiracetam | Levetiracetam | 60 | 16 |
| Clonazepam | Clonazepam | 54 | suppressed |
| Ongentys | Opicapone | 54 | suppressed |
| Aptiom | Eslicarbazepine Acetate | 53 | suppressed |
| Briviact | Brivaracetam | 53 | suppressed |
| Primidone | Primidone | 53 | 14 |
| Entacapone | Entacapone | 47 | 17 |
| Carbidopa-Levodopa Er | Carbidopa/Levodopa | 43 | 12 |
| Clobazam | Clobazam | 43 | suppressed |
| Quetiapine Fumarate | Quetiapine Fumarate | 37 | suppressed |
| Rivastigmine | Rivastigmine Tartrate | 37 | suppressed |
| Rasagiline Mesylate | Rasagiline Mesylate | 34 | suppressed |
| Topiramate | Topiramate | 34 | suppressed |
| Clopidogrel | Clopidogrel Bisulfate | 33 | suppressed |
| Memantine Hcl Er | Memantine Hcl | 32 | suppressed |
| Baclofen | Baclofen | 30 | suppressed |
| Levetiracetam Er | Levetiracetam | 30 | suppressed |
| Gocovri | Amantadine Hcl | 28 | suppressed |
| Paroxetine Hcl | Paroxetine Hcl | 28 | suppressed |
| Pyridostigmine Bromide | Pyridostigmine Bromide | 19 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 19 | suppressed |
| Nuedexta | Dextromethorphan Hbr/Quinidine | 18 | suppressed |
| Nuplazid | Pimavanserin Tartrate | 18 | suppressed |
| Risperidone | Risperidone | 18 | suppressed |
| Tizanidine Hcl | Tizanidine Hcl | 18 | suppressed |
| Benztropine Mesylate | Benztropine Mesylate | 17 | suppressed |
| Ingrezza | Valbenazine Tosylate | 17 | suppressed |
| Carbidopa-Levodopa-Entacapone | Carbidopa/Levodopa/Entacapone | 16 | suppressed |
| Lamotrigine | Lamotrigine | 14 | suppressed |
| Escitalopram Oxalate | Escitalopram Oxalate | 13 | suppressed |
| Dimethyl Fumarate | Dimethyl Fumarate | 12 | suppressed |
| Fycompa | Perampanel | 12 | suppressed |
| Nortriptyline Hcl | Nortriptyline Hcl | 12 | suppressed |
| Aspirin-Dipyridamole Er | Aspirin/Dipyridamole | 11 | suppressed |
| Divalproex Sodium | Divalproex Sodium | 11 | suppressed |
| Lyrica | Pregabalin | 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 | $1,682.34 · 58 records | Lundbeck LLC | AUSTEDO XR, CREXONT, EPIDIOLEX, Gocovri, INGREZZA, NUPLAZID, Nayzilam, PURIFIED CORTROPHIN GEL, QULIPTA, REXULTI, Rystiggo, UBRELVY, UPLIZNA, VYEPTI, VYVGART HYTRULO, WaveWriter Alpha Prime 16 | 9 | — |
| 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 ACADIA Pharmaceuticals 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