Healthcare provider profile · identity verified

Mohsen M Hamza, M.D.

Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology with Special Qualifications in Child Neurology · LOS ANGELES, CA · NPI 1003996844

Profile state: payments and partd Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

CMS Open Payments records show Mohsen M Hamza, M.D. received $5,175.57 in general payments during 2025 across 200 reported records.

ABBVIE INC. accounted for 29.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 39 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Gocovri, Ubrelvy, Vraylar.

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 11 claims for Ubrelvy by this doctor in 2024.

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 VRAYLAR as an associated drug or biological on 377741 records involving 62704 distinct recipient NPIs. Public Medicare Part D data also shows 27 claims for Vraylar 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.

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 11 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 15 claims for Xadago by this doctor in 2024.

Takeda Pharmaceuticals U.S.A., 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 GAMMAGARD LIQUID as an associated drug or biological on 29 records involving 8 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Gammagard Liquid by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$5,175.57

200 reported records · 34 companies

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 companyCanonical companyAmountShareRecordsYear
ABBVIE INC. Unresolved — no canonical attribution shown $1,517.9729.3%622025
SK Life Science, Inc. SK Life Science, Inc.
exact · evidence 2025-04-03
$412.328.0%162025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $384.437.4%92025
Amgen Inc. Unresolved — no canonical attribution shown $289.265.6%102025
Lundbeck LLC Unresolved — no canonical attribution shown $289.145.6%132025
ACADIA Pharmaceuticals Inc Unresolved — no canonical attribution shown $248.824.8%72025
HARMONY BIOSCIENCES LLC Unresolved — no canonical attribution shown $210.004.1%112025
Avadel CNS Pharmaceuticals, LLC Unresolved — no canonical attribution shown $164.863.2%52025
Forte Bio-Pharma LLC Unresolved — no canonical attribution shown $150.562.9%112025
SPR Therapeutics, Inc Unresolved — no canonical attribution shown $133.992.6%12025
Merz Pharmaceuticals, LLC Unresolved — no canonical attribution shown $132.052.5%32025
Supernus Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $124.922.4%72025
Amneal Pharmaceuticals LLC Unresolved — no canonical attribution shown $111.792.2%52025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $104.332.0%42025
Eisai Inc. Unresolved — no canonical attribution shown $102.292.0%42025
Lilly USA, LLC Unresolved — no canonical attribution shown $99.531.9%42025
Genentech USA, Inc. Unresolved — no canonical attribution shown $93.421.8%32025
UCB, Inc. Unresolved — no canonical attribution shown $92.881.8%22025
Neurelis, Inc. Neurelis, Inc.
exact · evidence 2025-02-20
$69.381.3%32025
SpringWorks Therapeutics, Inc. Unresolved — no canonical attribution shown $58.931.1%22025
Biogen, Inc. Unresolved — no canonical attribution shown $58.301.1%22025
Novo Nordisk Inc Unresolved — no canonical attribution shown $33.780.7%12025
Abbott Laboratories Unresolved — no canonical attribution shown $32.530.6%22025
Mallinckrodt Hospital Products Inc. Unresolved — no canonical attribution shown $32.310.6%12025
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $29.400.6%12025
CSL Behring Unresolved — no canonical attribution shown $28.890.6%12025
JAZZ PHARMACEUTICALS INC. Unresolved — no canonical attribution shown $28.580.6%12025
Azurity Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $24.410.5%12025
ARGENX US, INC. Unresolved — no canonical attribution shown $23.900.5%12025
Impel Pharmaceuticals LLC Unresolved — no canonical attribution shown $22.740.4%12025
Tanabe Pharma America, Inc. Unresolved — no canonical attribution shown $20.690.4%12025
Teva Pharmaceuticals USA, Inc. Unresolved — no canonical attribution shown $19.390.4%12025
MDD US Operations, LLC Unresolved — no canonical attribution shown $19.010.4%32025
Aucta Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $10.770.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$5,032.42195
Education$143.155

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 productTypeReported companyRelated amount*RecordsYear
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $669.09 27 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $592.45 25 2025
Source payment records
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $487.97 21 2025
Source payment records
Symbravo
Normalized: symbravo
Drug Axsome Therapeutics, Inc. $384.43 9 2025
Source payment records
BOTOX
Normalized: botox
Biological ABBVIE INC. $330.36 11 2025
Source payment records
UPLIZNA
Normalized: uplizna
Biological Amgen Inc. $289.26 10 2025
Source payment records
VYEPTI
Normalized: vyepti
Biological Lundbeck LLC $235.22 11 2025
Source payment records
WAKIX
Normalized: wakix
Drug HARMONY BIOSCIENCES LLC $210.00 11 2025
Source payment records
DAYBUE
Normalized: daybue
Drug ACADIA Pharmaceuticals Inc $172.05 4 2025
Source payment records
LUMRYZ
Normalized: lumryz
Drug Avadel CNS Pharmaceuticals, LLC $164.86 5 2025
Source payment records
TANLOR
Normalized: tanlor
Drug Forte Bio-Pharma LLC $150.56 11 2025
Source payment records
SPRINT PNS System
Normalized: sprint pns system
Device SPR Therapeutics, Inc $133.99 1 2025
Source payment records
Xeomin
Normalized: xeomin
Biological Merz Pharmaceuticals, LLC $132.05 3 2025
Source payment records
Qelbree
Normalized: qelbree
Drug Supernus Pharmaceuticals, Inc. $124.92 7 2025
Source payment records
CREXONT
Normalized: crexont
Drug Amneal Pharmaceuticals LLC $111.79 5 2025
Source payment records
HYQVIA
Normalized: hyqvia
Biological Takeda Pharmaceuticals U.S.A., Inc. $104.33 4 2025
Source payment records
Leqembi
Normalized: leqembi
Drug Eisai Inc. $102.29 4 2025
Source payment records
Ocrevus Zunovo
Normalized: ocrevus zunovo
Biological Genentech USA, Inc. $93.42 3 2025
Source payment records
Briviact
Normalized: briviact
Drug UCB, Inc. $92.88 2 2025
Source payment records
NUPLAZID
Normalized: nuplazid
Drug ACADIA Pharmaceuticals Inc $76.77 3 2025
Source payment records
KISUNLA
Normalized: kisunla
Drug Lilly USA, LLC $71.48 3 2025
Source payment records
VALTOCO
Normalized: valtoco
Drug Neurelis, Inc. $69.38 3 2025
Source payment records
GOMEKLI
Normalized: gomekli
Drug SpringWorks Therapeutics, Inc. $58.93 2 2025
Source payment records
SKYCLARYS
Normalized: skyclarys
Drug Biogen, Inc. $58.30 2 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Lundbeck LLC $53.92 2 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $33.78 1 2025
Source payment records
INFINITY
Normalized: infinity
Device Abbott Laboratories $32.53 2 2025
Source payment records
ACTHAR
Normalized: acthar
Biological Mallinckrodt Hospital Products Inc. $32.31 1 2025
Source payment records
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $29.40 1 2025
Source payment records
Hizentra
Normalized: hizentra
Biological CSL Behring $28.89 1 2025
Source payment records
EPIDIOLEX
Normalized: epidiolex
Drug JAZZ PHARMACEUTICALS INC. $28.58 1 2025
Source payment records
EMGALITY
Normalized: emgality
Drug Lilly USA, LLC $28.05 1 2025
Source payment records
ZONISADE
Normalized: zonisade
Drug Azurity Pharmaceuticals, Inc. $24.41 1 2025
Source payment records
VYVGART HYTRULO
Normalized: vyvgart hytrulo
Drug ARGENX US, INC. $23.90 1 2025
Source payment records
TRUDHESA
Normalized: trudhesa
Drug Impel Pharmaceuticals LLC $22.74 1 2025
Source payment records
Radicava
Normalized: radicava
Drug Tanabe Pharma America, Inc. $20.69 1 2025
Source payment records
AUSTEDO XR
Normalized: austedo xr
Drug Teva Pharmaceuticals USA, Inc. $19.39 1 2025
Source payment records
Gocovri
Normalized: gocovri
Drug MDD US Operations, LLC $19.01 3 2025
Source payment records
Motpoly XR
Normalized: motpoly xr
Drug Aucta Pharmaceuticals, Inc. $10.77 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 productPayment yearPart D brandPart D yearClaimsMatch methodSource
Gocovri
gocovri
2025 Gocovri 2024 11
Beneficiary count suppressed
exact normalized Medicare Part D
UBRELVY
ubrelvy
2025 Ubrelvy 2024 11
Beneficiary count suppressed
exact normalized Medicare Part D
VRAYLAR
vraylar
2025 Vraylar 2024 27
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 companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
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
11 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 VRAYLAR
open payments reported associated product
CMS Open Payments — General Payments
377741 supporting records · 62704 recipient NPIs · example record 1201352550
Vraylar · 2024
Exact normalized brand match · 1 Part D row
27 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
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
11 suppressed by CMS
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
15 suppressed by CMS
Takeda Pharmaceuticals U.S.A., Inc.
Exact reporting entity; no affiliate inference
2025 GAMMAGARD LIQUID
open payments reported associated product
CMS Open Payments — General Payments
29 supporting records · 8 recipient NPIs · example record 1223786557
Gammagard Liquid · 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

BrandGenericClaimsBeneficiaries
GabapentinGabapentin21354
Memantine HclMemantine Hcl14837
Donepezil HclDonepezil Hcl13939
MeloxicamMeloxicam9131
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen7518
Clonidine HclClonidine Hcl6516
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen6116
Amitriptyline HclAmitriptyline Hcl5712
Zolpidem TartrateZolpidem Tartrate5415
LevetiracetamLevetiracetam50suppressed
OmeprazoleOmeprazole4515
Cyclobenzaprine HclCyclobenzaprine Hcl4216
PentoxifyllinePentoxifylline4212
BaclofenBaclofen4011
Losartan PotassiumLosartan Potassium29suppressed
Oxycodone HclOxycodone Hcl29suppressed
ClonazepamClonazepam28suppressed
Escitalopram OxalateEscitalopram Oxalate28suppressed
Sumatriptan SuccinateSumatriptan Succinate27suppressed
VraylarCariprazine Hcl27suppressed
LisinoprilLisinopril22suppressed
AlprazolamAlprazolam21suppressed
AtenololAtenolol21suppressed
Metoprolol TartrateMetoprolol Tartrate21suppressed
Tizanidine HclTizanidine Hcl20suppressed
RytaryCarbidopa/Levodopa19suppressed
Acetaminophen-CodeineAcetaminophen With Codeine18suppressed
Diclofenac SodiumDiclofenac Sodium18suppressed
MethocarbamolMethocarbamol1811
Quetiapine FumarateQuetiapine Fumarate18suppressed
CarbamazepineCarbamazepine17suppressed
Duloxetine HclDuloxetine Hcl17suppressed
IbuprofenIbuprofen17suppressed
LorazepamLorazepam17suppressed
DiazepamDiazepam16suppressed
LamotrigineLamotrigine15suppressed
XadagoSafinamide Mesylate15suppressed
Amlodipine BesylateAmlodipine Besylate14suppressed
Carbidopa-LevodopaCarbidopa/Levodopa14suppressed
CelecoxibCelecoxib13suppressed
ClopidogrelClopidogrel Bisulfate13suppressed
Gammagard LiquidImmun Glob G(Igg)/Gly/Iga Ov5013suppressed
MeloxicamMeloxicam, Submicronized13suppressed
Atorvastatin CalciumAtorvastatin Calcium12suppressed
LacosamideLacosamide12suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide12suppressed
OxcarbazepineOxcarbazepine12suppressed
Propranolol HclPropranolol Hcl12suppressed
Sertraline HclSertraline Hcl12suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine11suppressed
GocovriAmantadine Hcl11suppressed
NeuproRotigotine11suppressed
TopiramateTopiramate11suppressed
UbrelvyUbrogepant11suppressed

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.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $5,175.57 · 200 records ABBVIE INC. ACTHAR, AUSTEDO XR, BOTOX, Briviact, CAPLYTA, CREXONT, DAYBUE, EMGALITY, EPIDIOLEX, GOMEKLI, Gocovri, HYQVIA, Hizentra, INFINITY, KISUNLA, LUMRYZ, Leqembi, Motpoly XR, NUPLAZID, Ocrevus Zunovo, QULIPTA, Qelbree, REXULTI, Radicava, SKYCLARYS, SPRINT PNS System, Symbravo, TANLOR, TRUDHESA, UBRELVY, UPLIZNA, VALTOCO, VRAYLAR, VYEPTI, VYVGART HYTRULO, WAKIX, Wegovy, Xeomin, ZONISADE 6
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
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

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error