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 1 of 3; records 1–50 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 1 of 3; records 1–50 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#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 1 of 3; records 1–50 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#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 1 of 3; records 1–50 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#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 1 of 3; records 1–50 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#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 1–50 of 132.

Paying entity	Amount	Date	Nature of payment	Dispute status	Publication flags	Published	Record ID	Source
Janssen Biotech, Inc.	$26.69	12/22/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	885531839	CMS
E.R. Squibb & Sons, L.L.C.	$8.35	12/20/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771227	CMS
E.R. Squibb & Sons, L.L.C.	$0.86	12/20/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771229	CMS
Adaptive Biotechnologies Corporation	$23.44	12/16/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	951435595	CMS
Seagen Inc.	$16.86	12/16/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	904084527	CMS
Amgen Inc.	$23.72	12/15/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	939906157	CMS
Celgene Corporation	$24.53	12/14/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771235	CMS
PFIZER INC.	$18.72	12/14/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	949503407	CMS
GlaxoSmithKline, LLC.	$15.17	12/07/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	945057619	CMS
Gilead Sciences, Inc.	$24.04	12/06/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	929534977	CMS
Amgen Inc.	$27.25	12/05/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	939906149	CMS
Celgene Corporation	$22.28	12/02/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771223	CMS
Merck Sharp & Dohme LLC	$24.21	12/02/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	944561015	CMS
ARRAY BIOPHARMA INC	$12.82	11/30/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	949501667	CMS
Eisai Inc.	$24.14	11/30/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	935311937	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$30.26	11/23/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	955732707	CMS
Karyopharm Therapeutics Inc.	$26.62	11/16/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	946518677	CMS
GlaxoSmithKline, LLC.	$18.55	11/15/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	945057617	CMS
Novartis Pharmaceuticals Corporation	$20.77	11/10/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	893970443	CMS
Novartis Pharmaceuticals Corporation	$21.82	11/02/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	893970447	CMS
Pharmacyclics LLC, an AbbVie Company	$21.40	11/02/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	890344185	CMS
Amgen Inc.	$20.97	11/01/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	939355707	CMS
Celgene Corporation	$13.84	10/26/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771209	CMS
BeiGene USA, Inc.	$24.74	10/21/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	940788103	CMS
E.R. Squibb & Sons, L.L.C.	$0.84	10/20/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771217	CMS
E.R. Squibb & Sons, L.L.C.	$15.39	10/20/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771219	CMS
Octapharma USA, Inc.	$22.04	10/13/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	937555585	CMS
Celgene Corporation	$30.37	10/11/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771215	CMS
Incyte Corporation	$20.64	10/06/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	943028549	CMS
Gilead Sciences, Inc.	$14.59	10/05/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	929534963	CMS
Merck Sharp & Dohme LLC	$24.58	10/05/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	944564485	CMS
Novartis Pharmaceuticals Corporation	$18.22	09/28/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	893970439	CMS
GENZYME CORPORATION	$24.94	09/26/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	938841107	CMS
GENZYME CORPORATION	$25.95	09/22/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	938841101	CMS
E.R. Squibb & Sons, L.L.C.	$1.40	09/19/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771197	CMS
E.R. Squibb & Sons, L.L.C.	$17.81	09/19/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771199	CMS
Incyte Corporation	$24.21	09/16/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	943028529	CMS
Amgen Inc.	$31.90	09/15/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	939906155	CMS
PFIZER INC.	$18.04	09/14/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	949318173	CMS
Gilead Sciences, Inc.	$18.96	09/13/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	929534967	CMS
Astellas Pharma US Inc	$21.39	09/09/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	940268597	CMS
PharmaEssentia USA Corporation	$34.61	09/08/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	941276705	CMS
Karyopharm Therapeutics Inc.	$28.99	09/02/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	946518669	CMS
PFIZER INC.	$17.15	09/02/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	949344895	CMS
Celgene Corporation	$20.83	08/30/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771193	CMS
Celgene Corporation	$16.10	08/29/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771181	CMS
PUMA BIOTECHNOLOGY, INC.	$17.41	08/25/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	942288431	CMS
Pharmacyclics LLC, an AbbVie Company	$2.09	08/24/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	890344181	CMS
Pharmacyclics LLC, an AbbVie Company	$11.84	08/24/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	890344183	CMS
E.R. Squibb & Sons, L.L.C.	$1.07	08/17/2022	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	932771183	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.