Payment overview · 2025
General Payments
$3,882.97
69 reported records · 15 companies
Healthcare provider profile · identity verified
Christopher Langston
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology · BRONX, NY · NPI 1902295165
Verified facts
What the public records show
CMS Open Payments records show Christopher Langston received $3,882.97 in general payments during 2025 across 69 reported records.
TG Therapeutics, Inc. accounted for 41.0% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 17 associated products.
Novartis Pharmaceuticals Corporation reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported MAYZENT as an associated drug or biological on 26 records involving 26 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Mayzent 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 |
|---|---|---|---|---|---|
| TG Therapeutics, Inc. | Unresolved — no canonical attribution shown | $1,590.82 | 41.0% | 9 | 2025 |
| EMD Serono, Inc. | Unresolved — no canonical attribution shown | $649.70 | 16.7% | 9 | 2025 |
| Novartis Pharmaceuticals Corporation | Unresolved — no canonical attribution shown | $389.04 | 10.0% | 13 | 2025 |
| Biogen, Inc. | Unresolved — no canonical attribution shown | $351.03 | 9.0% | 12 | 2025 |
| Lilly USA, LLC | Unresolved — no canonical attribution shown | $164.72 | 4.2% | 5 | 2025 |
| ARGENX US, INC. | Unresolved — no canonical attribution shown | $143.32 | 3.7% | 2 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $135.38 | 3.5% | 7 | 2025 |
| Eisai Inc. | Unresolved — no canonical attribution shown | $124.99 | 3.2% | 1 | 2025 |
| ITF Therapeutics LLC | Unresolved — no canonical attribution shown | $95.48 | 2.5% | 1 | 2025 |
| Alexion Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $57.29 | 1.5% | 2 | 2025 |
| Celgene Corporation | Unresolved — no canonical attribution shown | $56.40 | 1.4% | 3 | 2025 |
| Cycle Pharmaceuticals Inc | Unresolved — no canonical attribution shown | $43.13 | 1.1% | 2 | 2025 |
| GENZYME CORPORATION | Unresolved — no canonical attribution shown | $32.22 | 0.8% | 1 | 2025 |
| Genentech USA, Inc. | Unresolved — no canonical attribution shown | $26.73 | 0.7% | 1 | 2025 |
| ANI Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $22.72 | 0.6% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $2,532.97 | 68 |
| Consulting Fee | $1,350.00 | 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 |
|---|---|---|---|---|---|
| BRIUMVI Normalized: briumvi |
Drug | TG Therapeutics, Inc. | $1,590.82 | 9 | 2025 |
Source payment records
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| KESIMPTA Normalized: kesimpta |
Drug | Novartis Pharmaceuticals Corporation | $389.04 | 13 | 2025 |
Source payment records
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| TYSABRI Normalized: tysabri |
Biological | Biogen, Inc. | $335.00 | 11 | 2025 |
Source payment records
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| KISUNLA Normalized: kisunla |
Drug | Lilly USA, LLC | $150.37 | 4 | 2025 |
Source payment records
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| VYVGART Normalized: vyvgart |
Drug | ARGENX US, INC. | $143.32 | 2 | 2025 |
Source payment records
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| UPLIZNA Normalized: uplizna |
Biological | Amgen Inc. | $135.38 | 7 | 2025 |
Source payment records
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| Leqembi Normalized: leqembi |
Drug | Eisai Inc. | $124.99 | 1 | 2025 |
Source payment records
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| ULTOMIRIS Normalized: ultomiris |
Biological | Alexion Pharmaceuticals, Inc. | $57.29 | 2 | 2025 |
Source payment records
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| ZEPOSIA Normalized: zeposia |
Drug | Celgene Corporation | $56.40 | 3 | 2025 |
Source payment records
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| VUMERITY Normalized: vumerity |
Drug | Biogen, Inc. | $47.85 | 3 | 2025 |
Source payment records
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| Bafiertam Normalized: bafiertam |
Drug | Cycle Pharmaceuticals Inc | $43.13 | 2 | 2025 |
Source payment records
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| Tascenso ODT Normalized: tascenso odt |
Drug | Cycle Pharmaceuticals Inc | $43.13 | 2 | 2025 |
Source payment records
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| Ocrevus Zunovo Normalized: ocrevus zunovo |
Biological | Genentech USA, Inc. | $26.73 | 1 | 2025 |
Source payment records
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| AMYVID Normalized: amyvid |
Drug | Lilly USA, LLC | $25.38 | 3 | 2025 |
Source payment records
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| PURIFIED CORTROPHIN GEL Normalized: purified cortrophin gel |
Drug | ANI Pharmaceuticals, Inc. | $22.72 | 1 | 2025 |
Source payment records
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| VYVGART HYTRULO Normalized: vyvgart hytrulo |
Drug | ARGENX US, INC. | $18.33 | 1 | 2025 |
Source payment records
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| EMGALITY Normalized: emgality |
Drug | Lilly USA, LLC | $14.35 | 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
No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.
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 |
|---|---|---|---|---|---|---|
| Novartis Pharmaceuticals Corporation Exact reporting entity; no affiliate inference |
2025 | MAYZENT open payments reported associated product |
CMS Open Payments — General Payments 26 supporting records · 26 recipient NPIs · example record 1200006493 |
Mayzent · 2024 Exact normalized brand match · 1 Part D row |
11 | 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 |
|---|---|---|---|
| Gabapentin | Gabapentin | 196 | 58 |
| Baclofen | Baclofen | 182 | 53 |
| Dalfampridine Er | Dalfampridine | 150 | 25 |
| Kesimpta Pen | Ofatumumab | 69 | suppressed |
| Modafinil | Modafinil | 69 | suppressed |
| Teriflunomide | Teriflunomide | 69 | suppressed |
| Levetiracetam | Levetiracetam | 60 | 24 |
| Tizanidine Hcl | Tizanidine Hcl | 43 | 13 |
| Amlodipine Besylate | Amlodipine Besylate | 36 | suppressed |
| Lacosamide | Lacosamide | 36 | 12 |
| Lamotrigine | Lamotrigine | 34 | suppressed |
| Pregabalin | Pregabalin | 27 | suppressed |
| Divalproex Sodium | Divalproex Sodium | 26 | suppressed |
| Panzyga | Immun Glob G(Igg)-Ifas/Glycine | 26 | suppressed |
| Topiramate | Topiramate | 25 | suppressed |
| Aubagio | Teriflunomide | 24 | suppressed |
| Oxybutynin Chloride | Oxybutynin Chloride | 24 | suppressed |
| Copaxone | Glatiramer Acetate | 23 | suppressed |
| Gammagard Liquid | Immun Glob G(Igg)/Gly/Iga Ov50 | 22 | suppressed |
| Octagam | Immun Globg(Igg)/Malt/Iga Ov50 | 22 | suppressed |
| Ampyra | Dalfampridine | 21 | suppressed |
| Diazepam | Diazepam | 19 | 11 |
| Escitalopram Oxalate | Escitalopram Oxalate | 18 | suppressed |
| Glatiramer Acetate | Glatiramer Acetate | 18 | suppressed |
| Propranolol Hcl | Propranolol Hcl | 18 | suppressed |
| Clonazepam | Clonazepam | 17 | suppressed |
| Duloxetine Hcl | Duloxetine Hcl | 17 | suppressed |
| Atorvastatin Calcium | Atorvastatin Calcium | 16 | suppressed |
| Dextroamphetamine-Amphetamine | Dextroamphetamine/Amphetamine | 16 | suppressed |
| Tamsulosin Hcl | Tamsulosin Hcl | 16 | suppressed |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 15 | 11 |
| Oxcarbazepine | Oxcarbazepine | 15 | suppressed |
| Pramipexole Dihydrochloride | Pramipexole Di-Hcl | 15 | suppressed |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 15 | suppressed |
| Dextrose In Water | Dextrose 5 % In Water | 14 | suppressed |
| Glatopa | Glatiramer Acetate | 14 | suppressed |
| Qulipta | Atogepant | 14 | suppressed |
| Carbamazepine Er | Carbamazepine | 13 | suppressed |
| Primidone | Primidone | 13 | suppressed |
| Sodium Chloride | 0.9 % Sodium Chloride | 13 | suppressed |
| Aimovig Autoinjector | Erenumab-Aooe | 12 | suppressed |
| Phenobarbital | Phenobarbital | 12 | suppressed |
| Clopidogrel | Clopidogrel Bisulfate | 11 | suppressed |
| Mayzent | Siponimod | 11 | suppressed |
| Privigen | Immun Glob G(Igg)/Pro/Iga 0-50 | 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 | $3,882.97 · 69 records | TG Therapeutics, Inc. | AMYVID, BRIUMVI, Bafiertam, EMGALITY, KESIMPTA, KISUNLA, Leqembi, Ocrevus Zunovo, PURIFIED CORTROPHIN GEL, TYSABRI, Tascenso ODT, ULTOMIRIS, UPLIZNA, VUMERITY, VYVGART, VYVGART HYTRULO, ZEPOSIA | 1 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- How do you evaluate evidence when you have a financial relationship with Novartis Pharmaceuticals Corporation?
- 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