Covered recipient · General Payments record

GHASSAN ZALZALEH

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI: 1992704035
CMS profile: 45019
Location: OAK LAWN, IL

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.

Saved items

Saved only in this browser. No account or alerts.

Filter and download payment records

General Payments · PY2021 · Entire year

$2,142.13

122 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

PY2021 · entire year · sorted by reported total

Nature of payment	Amount	Records
Food and Beverage	$2,055.22	120
Education	$86.91	2

By paying entity

PY2021 · entire year · sorted by reported total

Paying entity	Amount	Records
E.R. Squibb & Sons, L.L.C.	$206.47	17
Genentech USA, Inc.	$168.41	10
Merck Sharp & Dohme Corporation	$150.03	9
AstraZeneca Pharmaceuticals LP	$135.85	9
Seagen Inc.	$128.27	8
Pharmacyclics LLC, An AbbVie Company	$106.09	5
Janssen Biotech, Inc.	$94.74	4
Global Blood Therapeutics, Inc.	$89.10	4
Daiichi Sankyo Inc.	$78.96	4
Dova Pharmaceuticals	$78.21	4
Karyopharm Therapeutics Inc.	$77.34	3
GENZYME CORPORATION	$76.72	5
SANOFI-AVENTIS U.S. LLC	$74.99	1
Amgen Inc.	$74.22	4
Lilly USA, LLC	$67.37	4
Novartis Pharmaceuticals Corporation	$57.24	4
Eisai Inc.	$56.58	3
Rigel Pharmaceuticals, Inc.	$40.71	2
Pharmacosmos Therapeutics Inc.	$34.21	2
Celgene Corporation	$33.16	2
Gilead Sciences, Inc.	$31.73	2
Takeda Pharmaceuticals U.S.A., Inc.	$30.93	2
EMD Serono, Inc.	$26.61	2
Exelixis Inc.	$25.72	1
BeiGene USA, Inc.	$21.96	1
Myovant Sciences Inc.	$20.69	1
Myriad Genetic Laboratories, Inc.	$19.74	1
Incyte Corporation	$19.42	1
Clovis Oncology, Inc.	$19.29	1
Alexion Pharmaceuticals, Inc.	$17.68	1
Kite Pharma, Inc.	$16.14	1
Epizyme, Inc.,	$16.09	1
Astellas Pharma US Inc	$15.86	1
PFIZER INC.	$15.84	1
Aveo Pharmaceuticals, Inc.	$15.76	1

Page 2 of 3; records 51–100 of 122 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

GHASSAN ZALZALEH

NPI 1992704035 · CMS profile ID 45019

Allopathic & Osteopathic Physicians / Internal Medicine / Hematology & Oncology

OAK LAWN, IL

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, PY2021; 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 122 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1992704035?year=2021&recipient=provider&page=2#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202

Cite these filtered records

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

Plain: GHASSAN ZALZALEH, NPI 1992704035, CMS profile ID 45019. General Payments, PY2021; 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 122 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1992704035?year=2021&recipient=provider&page=2#records-h. Source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202.
APA 7: IndustryPayments. (2026). GHASSAN ZALZALEH, NPI 1992704035, CMS profile ID 45019. General Payments, PY2021; 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 122 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1992704035?year=2021&recipient=provider&page=2#records-h. Source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202.
Bluebook: GHASSAN ZALZALEH, NPI 1992704035, CMS profile ID 45019, IndustryPayments, General Payments, PY2021; 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 122 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202. https://industrypayments.org/provider/npi-1992704035?year=2021&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 · PY2021

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 · PY2021 · Physicians and non-physician practitioners · CMS publication 2026-06-30

122 matching records · $2,142.13 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 122 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 122.

Paying entity	Amount	Date	Nature of payment	Dispute status	Publication flags	Published	Record ID	Source
Genentech USA, Inc.	$19.76	07/29/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	835914807	CMS
Lilly USA, LLC	$13.99	07/28/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	819106061	CMS
Seagen Inc.	$19.11	07/27/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	832178835	CMS
AstraZeneca Pharmaceuticals LP	$18.29	07/26/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	829871171	CMS
Daiichi Sankyo Inc.	$15.48	07/26/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	836304249	CMS
Janssen Biotech, Inc.	$23.47	07/23/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	788899483	CMS
Merck Sharp & Dohme Corporation	$16.19	07/13/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	848713385	CMS
Myovant Sciences Inc.	$20.69	07/12/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	834997867	CMS
Celgene Corporation	$15.24	07/09/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	783706915	CMS
Novartis Pharmaceuticals Corporation	$17.90	07/08/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	813384655	CMS
Global Blood Therapeutics, Inc.	$21.24	07/07/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	835342885	CMS
Pharmacyclics LLC, An AbbVie Company	$22.28	06/30/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	781016457	CMS
PFIZER INC.	$15.84	06/29/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	832813373	CMS
E.R. Squibb & Sons, L.L.C.	$0.25	06/24/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	783557993	CMS
E.R. Squibb & Sons, L.L.C.	$10.60	06/24/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	783557995	CMS
AstraZeneca Pharmaceuticals LP	$12.37	06/23/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	829839541	CMS
AstraZeneca Pharmaceuticals LP	$13.32	06/22/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	829498029	CMS
GENZYME CORPORATION	$13.33	06/22/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	843500199	CMS
Dova Pharmaceuticals	$21.07	06/18/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	849748421	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$15.73	06/16/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	820350553	CMS
Amgen Inc.	$21.75	06/15/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	826341681	CMS
Merck Sharp & Dohme Corporation	$16.54	06/15/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	848590293	CMS
GENZYME CORPORATION	$14.38	06/14/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	843500195	CMS
E.R. Squibb & Sons, L.L.C.	$23.07	06/07/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	783557999	CMS
Novartis Pharmaceuticals Corporation	$12.15	06/04/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	813384651	CMS
E.R. Squibb & Sons, L.L.C.	$12.81	06/02/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	783557985	CMS
Gilead Sciences, Inc.	$11.92	06/01/2021	Education	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	845881179	CMS
Pharmacyclics LLC, An AbbVie Company	$21.71	06/01/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	781016455	CMS
Global Blood Therapeutics, Inc.	$22.27	05/27/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	835342883	CMS
AstraZeneca Pharmaceuticals LP	$12.44	05/26/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	829860377	CMS
E.R. Squibb & Sons, L.L.C.	$14.96	05/25/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	783557983	CMS
Merck Sharp & Dohme Corporation	$16.87	05/25/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	848454001	CMS
Clovis Oncology, Inc.	$19.29	05/21/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	790254209	CMS
Merck Sharp & Dohme Corporation	$17.92	05/21/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	848333961	CMS
E.R. Squibb & Sons, L.L.C.	$18.40	05/18/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	783557859	CMS
E.R. Squibb & Sons, L.L.C.	$4.95	05/17/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	783557979	CMS
Pharmacyclics LLC, An AbbVie Company	$18.11	05/11/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	781016453	CMS
EMD Serono, Inc.	$14.46	05/07/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	849187656	CMS
AstraZeneca Pharmaceuticals LP	$19.65	05/04/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	829364457	CMS
Eisai Inc.	$22.53	04/29/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	817907107	CMS
Exelixis Inc.	$25.72	04/24/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	838867833	CMS
Seagen Inc.	$17.24	04/23/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	832178747	CMS
Daiichi Sankyo Inc.	$18.87	04/19/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	836284005	CMS
Karyopharm Therapeutics Inc.	$20.84	04/14/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	845785057	CMS
E.R. Squibb & Sons, L.L.C.	$14.50	04/09/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	783557849	CMS
Amgen Inc.	$13.82	04/06/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	826531497	CMS
E.R. Squibb & Sons, L.L.C.	$8.08	04/05/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	783557855	CMS
Lilly USA, LLC	$16.16	03/23/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	819144517	CMS
Merck Sharp & Dohme Corporation	$21.54	03/22/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	848689525	CMS
Daiichi Sankyo Inc.	$21.18	03/09/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	836268849	CMS

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2019	$3,195.83	179
PY2020	$1,742.12	90
PY2021	$2,142.13	122
PY2022	$2,122.63	111
PY2023	$7,669.57	145
PY2024	$16,234.09	200
PY2025	$7,634.11	208

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.