Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · CMS publication 2026-06-30 View official record

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.

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General Payments · PY2020 · Entire year

$1,742.12

90 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 . 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

PY2020 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $1,582.18 88
Education $159.94 2

By paying entity

PY2020 · entire year · sorted by reported total

Page 1 of 2; records 1–50 of 90 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 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.

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, PY2020; 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 2; records 1–50 of 90 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1992704035?year=2020&recipient=provider#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/a08c4b30-5cf3-4948-ad40-36f404619019

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, PY2020; 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 2; records 1–50 of 90 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1992704035?year=2020&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/a08c4b30-5cf3-4948-ad40-36f404619019.
APA 7
IndustryPayments. (2026). GHASSAN ZALZALEH, NPI 1992704035, CMS profile ID 45019. General Payments, PY2020; 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 2; records 1–50 of 90 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=2020&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/a08c4b30-5cf3-4948-ad40-36f404619019.
Bluebook
GHASSAN ZALZALEH, NPI 1992704035, CMS profile ID 45019, IndustryPayments, General Payments, PY2020; 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 2; records 1–50 of 90 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/a08c4b30-5cf3-4948-ad40-36f404619019. https://industrypayments.org/provider/npi-1992704035?year=2020&recipient=provider#records-h.

Centers for Medicare & Medicaid Services, Open Payments

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

Payment records · PY2020

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

General Payments · PY2020 · Physicians and non-physician practitioners · CMS publication 2026-06-30

90 matching records · $1,742.12 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 90 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 90.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Incyte Corporation $15.9912/18/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 745798981 CMS
Dova Pharmaceuticals $22.0412/16/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 752355039 CMS
Merck Sharp & Dohme Corporation $24.2512/15/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 747832425 CMS
Jazz Pharmaceuticals Inc. $24.7012/11/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 744464751 CMS
EMD Serono, Inc. $34.1912/10/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 751296587 CMS
Merck Sharp & Dohme Corporation $15.4412/10/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 747815073 CMS
Merck Sharp & Dohme Corporation $17.0712/08/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 747836635 CMS
EMD Serono, Inc. $19.1612/02/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 751296037 CMS
Seagen Inc. $14.9412/02/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 732452711 CMS
Genentech USA, Inc. $16.2012/01/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 743016809 CMS
Dova Pharmaceuticals $11.3311/30/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 752354681 CMS
Merck Sharp & Dohme Corporation $20.1911/24/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 747815527 CMS
Amgen Inc. $99.9511/23/2020 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 741457155 CMS
Merck Sharp & Dohme Corporation $18.7811/20/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 747819577 CMS
Global Blood Therapeutics, Inc. $21.4811/17/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 742106979 CMS
Merck Sharp & Dohme Corporation $13.7411/17/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 747812673 CMS
Jazz Pharmaceuticals Inc. $19.3911/11/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 744464749 CMS
AstraZeneca Pharmaceuticals LP $20.0011/08/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 735972151 CMS
Astellas Pharma US Inc $15.6210/28/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 718400971 CMS
Merck Sharp & Dohme Corporation $14.2810/28/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 747833089 CMS
Novo Nordisk Inc $22.6610/27/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 745005083 CMS
Merck Sharp & Dohme Corporation $17.6310/20/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 747783499 CMS
Immunomedics, Inc. $18.1510/19/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 750658377 CMS
Amgen Inc. $25.4310/13/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 741055779 CMS
Incyte Corporation $18.8110/08/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 745798962 CMS
Eisai Inc. $26.6110/03/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 751232177 CMS
Seagen Inc. $15.9609/25/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 732452645 CMS
GlaxoSmithKline, LLC. $16.8409/24/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 738636757 CMS
Lilly USA, LLC $19.4709/21/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 728451851 CMS
Eisai Inc. $24.2309/16/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 751226709 CMS
Puma Biotechnology, Inc. $14.4709/11/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 750540115 CMS
Genentech USA, Inc. $13.3009/08/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 743016801 CMS
Bayer HealthCare Pharmaceuticals Inc. $14.5308/28/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 713645053 CMS
Jazz Pharmaceuticals Inc. $24.3208/28/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 744458091 CMS
Pharmacyclics LLC, An AbbVie Company $25.2108/25/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 725669667 CMS
AstraZeneca Pharmaceuticals LP $18.9808/18/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 736057187 CMS
BeiGene USA, Inc. $17.8508/17/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 752950761 CMS
Celgene Corporation $23.9108/14/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 727913871 CMS
Amgen Inc. $10.6908/04/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 741055775 CMS
Merck Sharp & Dohme Corporation $13.6907/31/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 747678477 CMS
Karyopharm Therapeutics Inc. $29.1507/14/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 751730140 CMS
EMD Serono, Inc. $16.0807/08/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 751282489 CMS
Merck Sharp & Dohme Corporation $17.3707/07/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 747707353 CMS
E.R. Squibb & Sons, L.L.C. $13.7907/01/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 727913829 CMS
AstraZeneca Pharmaceuticals LP $14.3806/30/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 736056865 CMS
AstraZeneca Pharmaceuticals LP $16.1306/23/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 736047101 CMS
Merck Sharp & Dohme Corporation $15.6406/19/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 747651321 CMS
Incyte Corporation $19.9706/17/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 745798935 CMS
GENZYME CORPORATION $20.6006/16/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 744162553 CMS
Takeda Pharmaceuticals U.S.A., Inc. $13.2106/05/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 747331181 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
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
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.