Payment overview · 2025
General Payments
$2,313.93
128 reported records · 20 companies
Healthcare provider profile · identity verified
Michael N Castro, MD
Allopathic & Osteopathic Physicians|Dermatology · LAKEWOOD, CA · NPI 1437180320
Verified facts
What the public records show
CMS Open Payments records show Michael N Castro, MD received $2,313.93 in general payments during 2025 across 128 reported records.
Janssen Biotech, Inc. accounted for 23.2% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 33 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Otezla, Tremfya, Vtama.
Amgen 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 OTEZLA as an associated drug or biological on 177267 records involving 48600 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Otezla by this doctor in 2024.
Janssen Biotech, 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 TREMFYA as an associated drug or biological on 292917 records involving 40097 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Tremfya by this doctor in 2024.
Organon 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 VTAMA as an associated drug or biological on 29859 records involving 10220 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Vtama 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 |
|---|---|---|---|---|---|
| Janssen Biotech, Inc. | Unresolved — no canonical attribution shown | $537.79 | 23.2% | 32 | 2025 |
| GENZYME CORPORATION | Unresolved — no canonical attribution shown | $495.69 | 21.4% | 15 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $412.23 | 17.8% | 38 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $164.81 | 7.1% | 13 | 2025 |
| GlaxoSmithKline, LLC. | Unresolved — no canonical attribution shown | $105.36 | 4.5% | 5 | 2025 |
| SUN PHARMACEUTICAL INDUSTRIES INC. | Unresolved — no canonical attribution shown | $90.57 | 3.9% | 2 | 2025 |
| Regeneron Healthcare Solutions, Inc. | Unresolved — no canonical attribution shown | $86.52 | 3.7% | 3 | 2025 |
| Phathom Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $60.72 | 2.6% | 2 | 2025 |
| PFIZER INC. | Unresolved — no canonical attribution shown | $59.33 | 2.6% | 3 | 2025 |
| UCB, Inc. | Unresolved — no canonical attribution shown | $45.62 | 2.0% | 1 | 2025 |
| Ascensia Diabetes Care Us Inc. | Unresolved — no canonical attribution shown | $43.57 | 1.9% | 2 | 2025 |
| Organon LLC | Unresolved — no canonical attribution shown | $32.35 | 1.4% | 2 | 2025 |
| Galderma Laboratories, L.P. | Unresolved — no canonical attribution shown | $30.85 | 1.3% | 2 | 2025 |
| Seqirus USA Inc | Unresolved — no canonical attribution shown | $27.50 | 1.2% | 2 | 2025 |
| Mallinckrodt Hospital Products Inc. | Unresolved — no canonical attribution shown | $27.18 | 1.2% | 1 | 2025 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | Unresolved — no canonical attribution shown | $21.60 | 0.9% | 1 | 2025 |
| Novo Nordisk Inc | Unresolved — no canonical attribution shown | $20.44 | 0.9% | 1 | 2025 |
| Merck Sharp & Dohme LLC | Unresolved — no canonical attribution shown | $17.84 | 0.8% | 1 | 2025 |
| Lilly USA, LLC | Unresolved — no canonical attribution shown | $17.52 | 0.8% | 1 | 2025 |
| Ortho Dermatologics, a division of Bausch Health US, LLC | Unresolved — no canonical attribution shown | $16.44 | 0.7% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $2,214.93 | 127 |
| Education | $99.00 | 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 |
|---|---|---|---|---|---|
| TREMFYA Normalized: tremfya |
Drug | Janssen Biotech, Inc. | $537.79 | 32 | 2025 |
Source payment records
|
|||||
| DUPIXENT Normalized: dupixent |
Biological | GENZYME CORPORATION, Regeneron Healthcare Solutions, Inc. | $529.64 | 16 | 2025 |
Source payment records
|
|||||
| SIMPONI Normalized: simponi |
Biological | Janssen Biotech, Inc. | $201.28 | 11 | 2025 |
Source payment records
|
|||||
| SIMPONI ARIA Normalized: simponi aria |
Biological | Janssen Biotech, Inc. | $201.28 | 11 | 2025 |
Source payment records
|
|||||
| STELARA Normalized: stelara |
Biological | Janssen Biotech, Inc. | $201.28 | 11 | 2025 |
Source payment records
|
|||||
| SKYRIZI Normalized: skyrizi |
Biological | ABBVIE INC. | $196.99 | 16 | 2025 |
Source payment records
|
|||||
| RINVOQ Normalized: rinvoq |
Biological | ABBVIE INC. | $187.09 | 21 | 2025 |
Source payment records
|
|||||
| OTEZLA Normalized: otezla |
Drug | Amgen Inc. | $93.37 | 9 | 2025 |
Source payment records
|
|||||
| ILUMYA Normalized: ilumya |
Biological | SUN PHARMACEUTICAL INDUSTRIES INC. | $90.57 | 2 | 2025 |
Source payment records
|
|||||
| EVENITY Normalized: evenity |
Biological | Amgen Inc. | $71.44 | 4 | 2025 |
Source payment records
|
|||||
| TRELEGY ELLIPTA Normalized: trelegy ellipta |
Drug | GlaxoSmithKline, LLC. | $70.57 | 3 | 2025 |
Source payment records
|
|||||
| VOQUEZNA Normalized: voquezna |
Drug | Phathom Pharmaceuticals, Inc. | $60.72 | 2 | 2025 |
Source payment records
|
|||||
| CIBINQO Normalized: cibinqo |
Drug | PFIZER INC. | $59.33 | 3 | 2025 |
Source payment records
|
|||||
| LITFULO Normalized: litfulo |
Drug | PFIZER INC. | $59.33 | 3 | 2025 |
Source payment records
|
|||||
| Bimzelx Normalized: bimzelx |
Biological | UCB, Inc. | $45.62 | 1 | 2025 |
Source payment records
|
|||||
| AYVAKIT Normalized: ayvakit |
Biological | GENZYME CORPORATION | $35.18 | 1 | 2025 |
Source payment records
|
|||||
| SHINGRIX Normalized: shingrix |
Biological | GlaxoSmithKline, LLC. | $34.79 | 2 | 2025 |
Source payment records
|
|||||
| VTAMA Normalized: vtama |
Drug | Organon LLC | $32.35 | 2 | 2025 |
Source payment records
|
|||||
| PROLIA Normalized: prolia |
Biological | Amgen Inc. | $31.00 | 2 | 2025 |
Source payment records
|
|||||
| NEMLUVIO Normalized: nemluvio |
Drug | Galderma Laboratories, L.P. | $30.85 | 2 | 2025 |
Source payment records
|
|||||
| LINZESS Normalized: linzess |
Drug | ABBVIE INC. | $28.15 | 1 | 2025 |
Source payment records
|
|||||
| Fluad Normalized: fluad |
Biological | Seqirus USA Inc | $27.50 | 2 | 2025 |
Source payment records
|
|||||
| Flucelvax Normalized: flucelvax |
Biological | Seqirus USA Inc | $27.50 | 2 | 2025 |
Source payment records
|
|||||
| ACTHAR Normalized: acthar |
Biological | Mallinckrodt Hospital Products Inc. | $27.18 | 1 | 2025 |
Source payment records
|
|||||
| XIFAXAN Normalized: xifaxan |
Drug | Salix Pharmaceuticals, a division of Bausch Health US, LLC | $21.60 | 1 | 2025 |
Source payment records
|
|||||
| Ozempic Normalized: ozempic |
Drug | Novo Nordisk Inc | $20.44 | 1 | 2025 |
Source payment records
|
|||||
| CAPVAXIVE Normalized: capvaxive |
Biological | Merck Sharp & Dohme LLC | $17.84 | 1 | 2025 |
Source payment records
|
|||||
| GARDASIL 9 Normalized: gardasil 9 |
Biological | Merck Sharp & Dohme LLC | $17.84 | 1 | 2025 |
Source payment records
|
|||||
| EBGLYSS Normalized: ebglyss |
Drug | Lilly USA, LLC | $17.52 | 1 | 2025 |
Source payment records
|
|||||
| TALTZ Normalized: taltz |
Drug | Lilly USA, LLC | $17.52 | 1 | 2025 |
Source payment records
|
|||||
| Cabtreo Normalized: cabtreo |
Drug | Ortho Dermatologics, a division of Bausch Health US, LLC | $16.44 | 1 | 2025 |
Source payment records
|
|||||
| SILIQ Normalized: siliq |
Drug | Ortho Dermatologics, a division of Bausch Health US, LLC | $16.44 | 1 | 2025 |
Source payment records
|
|||||
| AREXVY Normalized: arexvy |
Biological | GlaxoSmithKline, LLC. | $14.50 | 1 | 2025 |
Source payment records
|
|||||
* 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 |
|---|---|---|---|---|---|---|
| OTEZLA otezla |
2025 | Otezla | 2024 | 15 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| TREMFYA tremfya |
2025 | Tremfya | 2024 | 29 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| VTAMA vtama |
2025 | Vtama | 2024 | 13 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 |
|---|---|---|---|---|---|---|
| Amgen Inc. Exact reporting entity; no affiliate inference |
2025 | OTEZLA open payments reported associated product |
CMS Open Payments — General Payments 177267 supporting records · 48600 recipient NPIs · example record 1226871616 |
Otezla · 2024 Exact normalized brand match · 1 Part D row |
15 | suppressed by CMS |
| Janssen Biotech, Inc. Exact reporting entity; no affiliate inference |
2025 | TREMFYA open payments reported associated product |
CMS Open Payments — General Payments 292917 supporting records · 40097 recipient NPIs · example record 1174257364 |
Tremfya · 2024 Exact normalized brand match · 1 Part D row |
29 | suppressed by CMS |
| Organon LLC Exact reporting entity; no affiliate inference |
2025 | VTAMA open payments reported associated product |
CMS Open Payments — General Payments 29859 supporting records · 10220 recipient NPIs · example record 1237634330 |
Vtama · 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 |
|---|---|---|---|
| Clobetasol Propionate | Clobetasol Propionate | 285 | 150 |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 242 | 116 |
| Fluocinonide | Fluocinonide | 146 | 64 |
| Doxycycline Hyclate | Doxycycline Hyclate | 129 | 53 |
| Ketoconazole | Ketoconazole | 104 | 33 |
| Mupirocin | Mupirocin | 94 | 65 |
| Calcipotriene | Calcipotriene | 77 | suppressed |
| Tacrolimus | Tacrolimus | 72 | 31 |
| Dupixent Pen | Dupilumab | 59 | suppressed |
| Cosentyx Sensoready (2 Pens) | Secukinumab | 53 | suppressed |
| Metronidazole | Metronidazole | 47 | 19 |
| Betamethasone Diprop Augmented | Betamethasone/Propylene Glyc | 46 | 22 |
| Fluorouracil | Fluorouracil | 44 | 34 |
| Econazole Nitrate | Econazole Nitrate | 38 | 18 |
| Ciclopirox | Ciclopirox | 37 | 18 |
| Halobetasol Propionate | Halobetasol Propionate | 36 | 15 |
| Clindamycin Phosphate | Clindamycin Phosphate | 29 | 13 |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 29 | suppressed |
| Tremfya | Guselkumab | 29 | suppressed |
| Nystatin | Nystatin | 28 | suppressed |
| Nystatin-Triamcinolone | Nystatin/Triamcinolone Acet | 20 | 12 |
| Taltz Autoinjector | Ixekizumab | 19 | suppressed |
| Cephalexin | Cephalexin | 17 | 16 |
| Terbinafine Hcl | Terbinafine Hcl | 17 | suppressed |
| Doxycycline Monohydrate | Doxycycline Monohydrate | 15 | suppressed |
| Minoxidil | Minoxidil | 15 | suppressed |
| Otezla | Apremilast | 15 | suppressed |
| Ammonium Lactate | Ammonium Lactate | 14 | suppressed |
| Skyrizi Pen | Risankizumab-Rzaa | 14 | suppressed |
| Dupixent Syringe | Dupilumab | 13 | suppressed |
| Vtama | Tapinarof | 13 | suppressed |
| Desonide | Desonide | 12 | suppressed |
| Hydrocortisone | Hydrocortisone | 12 | suppressed |
| Opzelura | Ruxolitinib Phosphate | 12 | suppressed |
| Ssd | Silver Sulfadiazine | 12 | suppressed |
| Humira(Cf) Pen | Adalimumab | 11 | suppressed |
| Tretinoin | Tretinoin | 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 | $2,313.93 · 128 records | Janssen Biotech, Inc. | ACTHAR, AREXVY, AYVAKIT, Bimzelx, CAPVAXIVE, CIBINQO, Cabtreo, DUPIXENT, EBGLYSS, EVENITY, Fluad, Flucelvax, GARDASIL 9, ILUMYA, LINZESS, LITFULO, NEMLUVIO, OTEZLA, Ozempic, PROLIA, RINVOQ, SHINGRIX, SILIQ, SIMPONI, SIMPONI ARIA, SKYRIZI, STELARA, TALTZ, TRELEGY ELLIPTA, TREMFYA, VOQUEZNA, VTAMA, XIFAXAN | 3 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Otezla play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with Amgen 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