Covered recipient · General Payments record

HUSSEIN MERZA

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI: 1235409673
CMS profile: 283190
Location: CORONA, 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 · PY2022 · Entire year

$2,568.01

132 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

PY2022 · entire year · sorted by reported total

Nature of payment	Amount	Records
Food and Beverage	$2,554.72	131
Education	$13.29	1

By paying entity

PY2022 · entire year · sorted by reported total

Paying entity	Amount	Records
Celgene Corporation	$309.48	15
Gilead Sciences, Inc.	$207.29	10
Novartis Pharmaceuticals Corporation	$178.99	11
E.R. Squibb & Sons, L.L.C.	$174.52	14
Amgen Inc.	$150.06	6
Incyte Corporation	$127.52	6
Pharmacyclics LLC, an AbbVie Company	$127.03	7
BeiGene USA, Inc.	$113.92	5
GENZYME CORPORATION	$111.56	5
PUMA BIOTECHNOLOGY, INC.	$101.48	5
PFIZER INC.	$100.69	6
Karyopharm Therapeutics Inc.	$92.16	4
Merck Sharp & Dohme LLC	$73.37	3
Seagen Inc.	$71.90	4
PharmaEssentia USA Corporation	$56.70	2
Adaptive Biotechnologies Corporation	$48.61	2
Janssen Biotech, Inc.	$45.49	2
Alnylam Pharmaceuticals Inc.	$41.16	2
EISAI INC.	$40.61	2
Octapharma USA, Inc.	$37.44	2
Astellas Pharma US Inc	$35.30	2
GlaxoSmithKline, LLC.	$33.72	2
Genentech USA, Inc.	$30.41	2
Takeda Pharmaceuticals U.S.A., Inc.	$30.26	1
TerSera Therapeutics LLC	$28.40	2
Rigel Pharmaceuticals, Inc.	$24.46	1
Boehringer Ingelheim Pharmaceuticals, Inc.	$23.40	1
Epizyme, Inc.,	$22.47	1
SERVIER PHARMACEUTICALS LLC	$21.50	1
Lilly USA, LLC	$19.99	1
Foundation Medicine, Inc.	$19.42	1
GE HealthCare	$19.40	1
Taiho Oncology, Inc.	$19.09	1
Acrotech Biopharma LLC	$17.39	1
ARRAY BIOPHARMA INC	$12.82	1

Page 2 of 3; records 51–100 of 132 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

HUSSEIN MERZA

NPI 1235409673 · CMS profile ID 283190

Allopathic & Osteopathic Physicians / Internal Medicine / Hematology & Oncology

CORONA, 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, PY2022; 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 132 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1235409673?year=2022&recipient=provider&page=2#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/df01c2f8-dc1f-4e79-96cb-8208beaf143c

Cite these filtered records

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

Plain: HUSSEIN MERZA, NPI 1235409673, CMS profile ID 283190. General Payments, PY2022; 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 132 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1235409673?year=2022&recipient=provider&page=2#records-h. Source: https://openpaymentsdata.cms.gov/dataset/df01c2f8-dc1f-4e79-96cb-8208beaf143c.
APA 7: IndustryPayments. (2026). HUSSEIN MERZA, NPI 1235409673, CMS profile ID 283190. General Payments, PY2022; 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 132 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1235409673?year=2022&recipient=provider&page=2#records-h. Source: https://openpaymentsdata.cms.gov/dataset/df01c2f8-dc1f-4e79-96cb-8208beaf143c.
Bluebook: HUSSEIN MERZA, NPI 1235409673, CMS profile ID 283190, IndustryPayments, General Payments, PY2022; 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 132 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/df01c2f8-dc1f-4e79-96cb-8208beaf143c. https://industrypayments.org/provider/npi-1235409673?year=2022&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 · PY2022

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 · PY2022 · Physicians and non-physician practitioners · CMS publication 2026-06-30

132 matching records · $2,568.01 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 132 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 132.

Paying entity	Amount	Date	Nature of payment	Dispute status	Publication flags	Published	Record ID	Source
E.R. Squibb & Sons, L.L.C.	$15.38	08/17/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771185	CMS
Gilead Sciences, Inc.	$14.93	08/17/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	929534965	CMS
Pharmacyclics LLC, an AbbVie Company	$24.18	08/12/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	890344179	CMS
Foundation Medicine, Inc.	$19.42	08/10/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	924044951	CMS
Novartis Pharmaceuticals Corporation	$14.79	08/09/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	893970431	CMS
Celgene Corporation	$22.92	08/04/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771191	CMS
Gilead Sciences, Inc.	$23.34	08/02/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	929534973	CMS
Seagen Inc.	$26.94	08/01/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	904084465	CMS
Novartis Pharmaceuticals Corporation	$10.20	07/29/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	893970435	CMS
Celgene Corporation	$26.14	07/27/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771169	CMS
Genentech USA, Inc.	$12.98	07/27/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	950709111	CMS
PUMA BIOTECHNOLOGY, INC.	$22.34	07/26/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	942299941	CMS
BeiGene USA, Inc.	$17.39	07/22/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	940788099	CMS
BeiGene USA, Inc.	$17.39	07/22/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	940788101	CMS
Adaptive Biotechnologies Corporation	$25.17	07/20/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	951435599	CMS
TerSera Therapeutics LLC	$13.34	07/06/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	943240533	CMS
Karyopharm Therapeutics Inc.	$13.85	06/30/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	946518657	CMS
SERVIER PHARMACEUTICALS LLC	$21.50	06/30/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	964204173	CMS
GENZYME CORPORATION	$23.00	06/27/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	938841079	CMS
GE HealthCare	$19.40	06/24/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	953421913	CMS
Karyopharm Therapeutics Inc.	$22.70	06/22/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	946518663	CMS
Gilead Sciences, Inc.	$23.49	06/21/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	929534975	CMS
Alnylam Pharmaceuticals Inc.	$26.56	06/17/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	926072099	CMS
Novartis Pharmaceuticals Corporation	$17.70	06/16/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	893970427	CMS
PFIZER INC.	$15.74	06/15/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	949163669	CMS
Amgen Inc.	$22.08	06/14/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	939906151	CMS
Gilead Sciences, Inc.	$31.75	06/13/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	929534979	CMS
Seagen Inc.	$14.81	06/08/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	904084453	CMS
PharmaEssentia USA Corporation	$22.09	06/03/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	941276559	CMS
PFIZER INC.	$13.83	06/02/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	949176137	CMS
Seagen Inc.	$13.29	06/01/2022	Education	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	904084455	CMS
Novartis Pharmaceuticals Corporation	$17.24	05/27/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	893970423	CMS
PUMA BIOTECHNOLOGY, INC.	$29.57	05/26/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	942298123	CMS
EISAI INC.	$16.47	05/20/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	908042163	CMS
Lilly USA, LLC	$19.99	05/16/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	918039283	CMS
BeiGene USA, Inc.	$27.36	05/11/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	940788095	CMS
Celgene Corporation	$22.12	05/04/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771153	CMS
Novartis Pharmaceuticals Corporation	$15.27	04/29/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	893970415	CMS
Epizyme, Inc.,	$22.47	04/28/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	917609791	CMS
Celgene Corporation	$20.85	04/27/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771147	CMS
Celgene Corporation	$0.49	04/27/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771149	CMS
Gilead Sciences, Inc.	$11.43	04/27/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	929534961	CMS
Novartis Pharmaceuticals Corporation	$14.72	04/27/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	893970419	CMS
E.R. Squibb & Sons, L.L.C.	$28.78	04/26/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771145	CMS
PFIZER INC.	$17.21	04/25/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	949105513	CMS
E.R. Squibb & Sons, L.L.C.	$20.57	04/07/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771135	CMS
Pharmacyclics LLC, an AbbVie Company	$25.28	04/05/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	890344177	CMS
Celgene Corporation	$20.11	04/01/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771151	CMS
TerSera Therapeutics LLC	$15.06	03/28/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	943240529	CMS
Astellas Pharma US Inc	$13.91	03/26/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	940153627	CMS

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2019	$245.08	4
PY2020	$804.12	40
PY2021	$3,058.05	148
PY2022	$2,568.01	132
PY2023	$2,183.98	110
PY2024	$762.87	33
PY2025	$102.60	4

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.