Covered recipient · General Payments record

MOHSEN M HAMZA

Allopathic & Osteopathic Physicians Psychiatry & Neurology Neurology with Special Qualifications in Child Neurology

NPI: 1003996844
CMS profile: 45666
Location: LOS ANGELES, CA

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

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General Payments · PY2023 · Entire year

$3,197.49

142 records · 0 disputed

Summary and payment records

CMS publication 2026-06-30

Read the payment records

“Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.”
— Centers for Medicare & Medicaid Services, Open Payments

A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

How these totals are calculated

This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. Nothing is estimated, weighted, or combined across categories.
General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
Methodology & Data — sourcing, labeling, and limitations.

Provider summaries generated July 26, 2026. CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗

By nature of payment

PY2023 · entire year · sorted by reported total

Nature of payment	Amount	Records
Food and Beverage	$3,196.99	141
Education	$0.50	1

By paying entity

PY2023 · entire year · sorted by reported total

Paying entity	Amount	Records
ABBVIE INC.	$595.57	31
ARGENX US, INC.	$342.71	10
Sumitomo Pharma America, Inc.	$223.69	9
SK Life Science, Inc.	$174.22	7
Lundbeck LLC	$149.74	6
Neurelis, Inc.	$147.68	2
MDD US Operations, LLC	$147.41	19
Lilly USA, LLC	$145.87	6
UCB, Inc.	$138.72	6
Corium, LLC	$102.90	5
Biogen, Inc.	$102.76	4
PFIZER INC.	$97.52	4
Catalyst Pharmaceuticals, Inc.	$96.33	4
Takeda Pharmaceuticals U.S.A., Inc.	$82.69	3
Mallinckrodt Hospital Products Inc.	$75.88	2
GENZYME CORPORATION	$71.79	2
EMD Serono, Inc.	$57.48	2
Amneal Pharmaceuticals LLC	$55.63	2
Horizon Therapeutics plc	$43.59	2
ACADIA Pharmaceuticals Inc	$42.73	2
CSL Behring	$37.86	1
Electronic Waveform Lab, Inc.	$34.75	3
IDORSIA PHARMACEUTICALS US INC	$31.18	2
BANNER LIFE SCIENCES, LLC	$30.29	1
Merz Pharmaceuticals, LLC	$29.06	1
Otsuka America Pharmaceutical, Inc.	$28.42	1
MITSUBISHI TANABE PHARMA AMERICA, INC.	$27.95	1
Metacel Pharmaceuticals LLC	$23.45	1
IMPEL PHARMACEUTICALS INC.	$21.65	1
Genentech USA, Inc.	$19.39	1
Amylyx Pharmaceuticals, Inc.	$18.58	1

Page 2 of 3; records 51–100 of 142 matching records. This page contains 50 records (maximum 50), not the full filtered export. Use the CSV download for all matching records.

IndustryPayments · General Payments

MOHSEN M HAMZA

NPI 1003996844 · CMS profile ID 45666

Allopathic & Osteopathic Physicians / Psychiatry & Neurology / Neurology with Special Qualifications in Child Neurology

LOS ANGELES, CA

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

General Payments, PY2023; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types

Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00

Page 2 of 3; records 51–100 of 142 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1003996844?year=2023&recipient=provider&page=2#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9

Cite these filtered records

The citation includes this program year, filters, data edition, and page of results.

Plain: MOHSEN M HAMZA, NPI 1003996844, CMS profile ID 45666. General Payments, PY2023; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 2 of 3; records 51–100 of 142 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1003996844?year=2023&recipient=provider&page=2#records-h. Source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9.
APA 7: IndustryPayments. (2026). MOHSEN M HAMZA, NPI 1003996844, CMS profile ID 45666. General Payments, PY2023; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 2 of 3; records 51–100 of 142 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1003996844?year=2023&recipient=provider&page=2#records-h. Source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9.
Bluebook: MOHSEN M HAMZA, NPI 1003996844, CMS profile ID 45666, IndustryPayments, General Payments, PY2023; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types (Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00). Page 2 of 3; records 51–100 of 142 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9. https://industrypayments.org/provider/npi-1003996844?year=2023&recipient=provider&page=2#records-h.

Centers for Medicare & Medicaid Services, Open Payments

Citation formats are provided for reference; check the requirements of your publication.

General Payments only. Research Payments and Ownership/Investment Interests are separate datasets and are not included.

Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.

Centers for Medicare & Medicaid Services, Open Payments

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state.

IndustryPayments.org is not a consumer reporting agency as defined by the Fair Credit Reporting Act. Do not use this site to determine any person's eligibility for employment, credentialing, insurance, credit, housing, or any other purpose covered by the FCRA.

Methodology: https://industrypayments.org/methodology

Payment records · PY2023

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

Reporting company Nature of payment

General Payments · PY2023 · Physicians and non-physician practitioners · CMS publication 2026-06-30

142 matching records · $3,197.49 reported total · 0 disputed

Nature of payment: All payment types

Records imported here November 5, 2026 (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 142 matching records (CSV)

CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.

Showing records 51–100 of 142.

Paying entity	Amount	Date	Nature of payment	Dispute status	Publication flags	Published	Record ID	Source
SK Life Science, Inc.	$25.48	08/31/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1054822791	CMS
ABBVIE INC.	$9.56	08/25/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	997427517	CMS
ARGENX US, INC.	$24.11	08/24/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1060431125	CMS
MDD US Operations, LLC	$5.23	08/24/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1052876081	CMS
Sumitomo Pharma America, Inc.	$25.05	08/24/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1030917319	CMS
ABBVIE INC.	$18.87	08/23/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	997427515	CMS
Lundbeck LLC	$30.74	08/18/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1032236325	CMS
ARGENX US, INC.	$34.18	08/16/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1060431165	CMS
ARGENX US, INC.	$121.90	08/16/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1060431205	CMS
MDD US Operations, LLC	$2.75	08/15/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1052876075	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$28.03	08/15/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1055399141	CMS
ACADIA Pharmaceuticals Inc	$18.41	08/14/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1053135441	CMS
GENZYME CORPORATION	$35.71	08/09/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1049812705	CMS
MDD US Operations, LLC	$4.17	08/08/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1052876069	CMS
PFIZER INC.	$27.62	08/07/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1050085233	CMS
ABBVIE INC.	$12.41	08/03/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	997427513	CMS
Catalyst Pharmaceuticals, Inc.	$20.15	08/02/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1048230187	CMS
Horizon Therapeutics plc	$18.97	08/01/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	987014275	CMS
UCB, Inc.	$34.98	07/27/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1021401187	CMS
Sumitomo Pharma America, Inc.	$23.97	07/20/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1030917323	CMS
SK Life Science, Inc.	$31.84	07/18/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1054822711	CMS
ABBVIE INC.	$23.62	07/11/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	997427511	CMS
Neurelis, Inc.	$123.02	07/11/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1050919253	CMS
Corium, LLC	$21.88	07/10/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	978651143	CMS
SK Life Science, Inc.	$0.50	07/06/2023	Education	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1054822931	CMS
Lundbeck LLC	$27.08	06/28/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1032236319	CMS
Lilly USA, LLC	$26.80	06/27/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1031953747	CMS
ABBVIE INC.	$20.65	06/24/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	997427507	CMS
ABBVIE INC.	$20.94	06/24/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	997427509	CMS
Sumitomo Pharma America, Inc.	$24.82	06/22/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1030917331	CMS
ABBVIE INC.	$28.39	06/15/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	997427505	CMS
Otsuka America Pharmaceutical, Inc.	$28.42	06/13/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1014386125	CMS
Corium, LLC	$5.35	06/12/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	978650183	CMS
Biogen, Inc.	$26.59	06/08/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1012246355	CMS
Catalyst Pharmaceuticals, Inc.	$24.58	06/08/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1048230185	CMS
ABBVIE INC.	$18.06	06/07/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	997427503	CMS
ARGENX US, INC.	$23.97	06/05/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1060431061	CMS
Corium, LLC	$29.83	05/31/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	978650175	CMS
UCB, Inc.	$4.00	05/31/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1021401159	CMS
UCB, Inc.	$35.91	05/31/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1021401195	CMS
ABBVIE INC.	$19.17	05/30/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	997427501	CMS
Merz Pharmaceuticals, LLC	$29.06	05/25/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1048298299	CMS
IDORSIA PHARMACEUTICALS US INC	$16.41	05/22/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1038246133	CMS
Sumitomo Pharma America, Inc.	$25.25	05/18/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1030917327	CMS
ABBVIE INC.	$28.98	05/12/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	997427499	CMS
ABBVIE INC.	$20.54	04/27/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	997427497	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$26.63	04/26/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1055399139	CMS
GENZYME CORPORATION	$36.08	04/25/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1049812605	CMS
Lundbeck LLC	$29.58	04/24/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1032236313	CMS
ARGENX US, INC.	$22.00	04/20/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1060431041	CMS

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2019	$1,723.93	99
PY2020	$1,652.71	102
PY2021	$4,252.42	228
PY2022	$3,654.44	157
PY2023	$3,197.49	142
PY2024	$4,179.73	159
PY2025	$5,175.57	200

Source & provenance

Dataset: CMS Open Payments — General Payments
Publisher of source data: Centers for Medicare & Medicaid Services
CMS publication date: 2026-06-30
Program years on this page: 2019, 2020, 2021, 2022, 2023, 2024, 2025

Source files and profile matching

Source files: Dataset page · Bulk file · PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024 , PY2025
Generated from: OP_DTL_GNRL_PGYR2025_P06302026_06032026.csv

One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.

Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.