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 · PY2025 · Entire year

$7,634.11

208 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

PY2025 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $4,555.14 202
Consulting Fee $2,775.00 2
Education $303.97 4

By paying entity

PY2025 · entire year · sorted by reported total

Paying entityAmountRecords
AstraZeneca Pharmaceuticals LP $1,943.87 13
BeiGene USA, Inc. $1,139.89 3
Novartis Pharmaceuticals Corporation $363.79 23
PFIZER INC. $251.68 15
Daiichi Sankyo Inc. $238.90 11
Merck Sharp & Dohme LLC $225.07 11
SOBI, INC $221.92 3
Janssen Biotech, Inc. $205.11 8
GlaxoSmithKline, LLC. $197.23 7
ABBVIE INC. $132.83 6
ARRAY BIOPHARMA INC $132.52 6
Genentech USA, Inc. $124.23 7
Regeneron Healthcare Solutions, Inc. $121.00 4
Agios Pharmaceuticals, Inc. $118.92 5
Gilead Sciences, Inc. $104.69 5
Astellas Pharma US Inc $102.80 4
TerSera Therapeutics LLC $102.23 3
Geron Corporation $101.75 3
Celgene Corporation $96.78 4
SpringWorks Therapeutics, Inc. $90.24 3
BeOne Medicines USA, Inc. $86.57 3
SEAGEN INC. $83.99 1
Lilly USA, LLC $82.97 3
Takeda Pharmaceuticals U.S.A., Inc. $76.82 3
GENZYME CORPORATION $72.77 3
Eisai Inc. $67.54 3
PharmaEssentia USA Corporation $62.64 2
Blueprint Medicines Corporation $61.15 2
Azurity Pharmaceuticals, Inc. $61.11 2
Biocon Biologics Inc $54.56 2
Stemline Therapeutics Inc. $53.81 3
Immunocore Limited $53.20 2
Boehringer Ingelheim Pharmaceuticals, Inc. $52.63 2
Alexion Pharmaceuticals, Inc. $47.44 2
Legend Biotech USA Inc. $45.69 2
Aveo Pharmaceuticals, Inc. $44.22 2
Deciphera Pharmaceuticals Inc. $43.78 2
PUMA BIOTECHNOLOGY, INC. $42.68 2
Caris MPI, Inc. $41.93 1
Bayer Healthcare Pharmaceuticals Inc. $40.26 2
Incyte Corporation $37.18 2
Pharmacosmos Therapeutics Inc. $36.68 2
Karyopharm Therapeutics Inc. $34.37 2
ADC THERAPEUTICS AMERICA, INC. $31.88 2
Genmab U.S., Inc. $30.91 1
GE HEALTHCARE $30.82 1
Ipsen Biopharmaceuticals, Inc $30.45 1
JAZZ PHARMACEUTICALS INC. $29.30 1
Amneal Pharmaceuticals LLC $27.38 1
Syndax Pharmaceuticals, Inc. $25.90 1
TAIHO ONCOLOGY, INC. $24.96 1
SHORLA ONCOLOGY INC. $23.84 1
EMD Serono, Inc. $20.30 1
SERVIER PHARMACEUTICALS LLC $20.27 1
Iovance Biotherapeutics, Inc. $19.45 1
ACCORD HEALTHCARE, INC. $19.21 1

Page 2 of 5; records 51–100 of 208 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, PY2025; 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 5; records 51–100 of 208 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1992704035?year=2025&recipient=provider&page=2#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/fb0b1734-1410-429d-92f6-3f4b35218e5e

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, PY2025; 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 5; records 51–100 of 208 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1992704035?year=2025&recipient=provider&page=2#records-h. Source: https://openpaymentsdata.cms.gov/dataset/fb0b1734-1410-429d-92f6-3f4b35218e5e.
APA 7
IndustryPayments. (2026). GHASSAN ZALZALEH, NPI 1992704035, CMS profile ID 45019. General Payments, PY2025; 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 5; records 51–100 of 208 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=2025&recipient=provider&page=2#records-h. Source: https://openpaymentsdata.cms.gov/dataset/fb0b1734-1410-429d-92f6-3f4b35218e5e.
Bluebook
GHASSAN ZALZALEH, NPI 1992704035, CMS profile ID 45019, IndustryPayments, General Payments, PY2025; 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 5; records 51–100 of 208 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/fb0b1734-1410-429d-92f6-3f4b35218e5e. https://industrypayments.org/provider/npi-1992704035?year=2025&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.

Payment records · PY2025

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

General Payments · PY2025 · Physicians and non-physician practitioners · CMS publication 2026-06-30

208 matching records · $7,634.11 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 208 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 208.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
PFIZER INC. $27.3209/24/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1230319753 CMS
Eisai Inc. $22.5609/23/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1244480756 CMS
Novartis Pharmaceuticals Corporation $2.6409/23/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200573069 CMS
GlaxoSmithKline, LLC. $29.4709/17/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1190593813 CMS
ABBVIE INC. $24.3009/16/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1204847127 CMS
Celgene Corporation $20.1509/16/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1184871780 CMS
PFIZER INC. $16.3209/15/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1230843855 CMS
Novartis Pharmaceuticals Corporation $26.0909/12/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200573059 CMS
Astellas Pharma US Inc $23.8009/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1238665853 CMS
Incyte Corporation $20.3009/09/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1226165002 CMS
Novartis Pharmaceuticals Corporation $15.3609/02/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200573057 CMS
Geron Corporation $33.6009/01/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1238896535 CMS
Novartis Pharmaceuticals Corporation $1.4708/28/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200573061 CMS
Novartis Pharmaceuticals Corporation $15.6808/28/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200573063 CMS
Novartis Pharmaceuticals Corporation $10.9608/28/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200573065 CMS
Genentech USA, Inc. $16.4608/27/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1211515345 CMS
Gilead Sciences, Inc. $15.0608/27/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1234571616 CMS
PFIZER INC. $10.8208/27/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1230244380 CMS
ARRAY BIOPHARMA INC $28.9008/25/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1230290957 CMS
Takeda Pharmaceuticals U.S.A., Inc. $22.3308/21/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1223876826 CMS
BeOne Medicines USA, Inc. $38.7908/20/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1202885940 CMS
Janssen Biotech, Inc. $20.8808/19/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1174322767 CMS
BeOne Medicines USA, Inc. $24.4508/18/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1202885938 CMS
Biocon Biologics Inc $27.6808/14/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1254659217 CMS
SHORLA ONCOLOGY INC. $23.8408/14/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1242558816 CMS
EMD Serono, Inc. $20.3008/13/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1236908461 CMS
Daiichi Sankyo Inc. $5.5408/12/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1197017935 CMS
Daiichi Sankyo Inc. $22.1208/12/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1197017937 CMS
SEAGEN INC. $83.9908/07/2025 Education No dispute reported Delay: No
Change: NEW
06/30/2026 1230219572 CMS
TerSera Therapeutics LLC $34.8308/06/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1244056188 CMS
PFIZER INC. $9.8208/05/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1230290020 CMS
PFIZER INC. $21.0108/05/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1230290983 CMS
PFIZER INC. $15.3507/31/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1230183025 CMS
Novartis Pharmaceuticals Corporation $16.1807/30/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200573053 CMS
ARRAY BIOPHARMA INC $19.8607/29/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1230215449 CMS
GlaxoSmithKline, LLC. $29.4407/29/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1191646374 CMS
Geron Corporation $34.1207/28/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1238896531 CMS
ARRAY BIOPHARMA INC $20.9007/25/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1230215439 CMS
AstraZeneca Pharmaceuticals LP $23.0807/24/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1207288552 CMS
Gilead Sciences, Inc. $21.1007/24/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1234516633 CMS
Immunocore Limited $25.1907/22/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1235826025 CMS
Novartis Pharmaceuticals Corporation $17.3407/18/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200573055 CMS
Novartis Pharmaceuticals Corporation $21.9707/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200573113 CMS
BeOne Medicines USA, Inc. $23.3307/07/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1202885942 CMS
Stemline Therapeutics Inc. $17.5207/03/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1244092991 CMS
Merck Sharp & Dohme LLC $19.3707/02/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1238277493 CMS
AstraZeneca Pharmaceuticals LP $24.0907/01/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1206593862 CMS
ADC THERAPEUTICS AMERICA, INC. $13.9006/27/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1246122652 CMS
GlaxoSmithKline, LLC. $27.9406/27/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1190402330 CMS
TAIHO ONCOLOGY, INC. $24.9606/26/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1211405140 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.