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 · PY2024 · Entire year

$16,234.09

200 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

PY2024 · entire year · sorted by reported total

Nature of paymentAmountRecords
Consulting Fee $10,870.00 2
Food and Beverage $4,369.97 193
Travel and Lodging $820.14 3
Education $173.98 2

By paying entity

PY2024 · entire year · sorted by reported total

Paying entityAmountRecords
EMD Serono, Inc. $11,001.16 7
Karyopharm Therapeutics Inc. $1,100.00 2
PFIZER INC. $301.23 18
Janssen Biotech, Inc. $280.08 8
Alexion Pharmaceuticals, Inc. $257.69 5
Novartis Pharmaceuticals Corporation $241.42 16
AstraZeneca Pharmaceuticals LP $235.81 11
Takeda Pharmaceuticals U.S.A., Inc. $213.99 8
Regeneron Healthcare Solutions, Inc. $205.90 15
Merck Sharp & Dohme LLC $184.85 10
Astellas Pharma US Inc $164.37 7
Eisai Inc. $161.76 7
Lilly USA, LLC $157.79 7
Genentech USA, Inc. $133.75 7
ABBVIE INC. $126.14 7
Daiichi Sankyo Inc. $110.49 4
Tempus AI, Inc $105.47 5
GlaxoSmithKline, LLC. $103.58 4
E.R. Squibb & Sons, L.L.C. $103.26 5
Pharmacosmos Therapeutics Inc. $94.05 4
BeiGene USA, Inc. $74.31 2
Celgene Corporation $65.42 3
Gilead Sciences, Inc. $64.89 3
ARRAY BIOPHARMA INC $59.89 3
GENZYME CORPORATION $58.97 2
JAZZ PHARMACEUTICALS INC. $58.23 2
SOBI, INC $44.13 2
Blue Earth Diagnostics Limited $43.00 2
Exelixis Inc. $35.04 2
TAIHO ONCOLOGY, INC. $34.75 2
Agios Pharmaceuticals, Inc. $32.62 2
Adaptive Biotechnologies Corporation $29.94 1
Boehringer Ingelheim Pharmaceuticals, Inc. $29.54 1
Blueprint Medicines Corporation $28.74 1
Immunocore Limited $25.05 1
Ipsen Biopharmaceuticals, Inc $24.52 1
Aveo Pharmaceuticals, Inc. $23.98 1
RECORDATI_RARE_DISEASES_INC. $22.21 1
ImmunoGen, Inc. $22.05 1
Mirati Therapeutics, Inc. $21.77 1
GE HEALTHCARE $20.62 1
ADC Therapeutics America, Inc. $19.58 1
Kite Pharma, Inc. $18.34 1
Bayer Healthcare Pharmaceuticals Inc. $17.53 1
Secura Bio, Inc. $16.39 1
Myriad Genetic Laboratories, Inc. $16.07 1
Incyte Corporation $15.94 1
Fennec Pharmaceuticals, Inc. $14.65 1
Spectrum Pharmaceuticals Inc. $13.13 1

Page 1 of 4; records 1–50 of 200 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, PY2024; 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 4; records 1–50 of 200 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1992704035?year=2024&recipient=provider#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/e6b17c6a-2534-4207-a4a1-6746a14911ff

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, PY2024; 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 4; records 1–50 of 200 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1992704035?year=2024&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/e6b17c6a-2534-4207-a4a1-6746a14911ff.
APA 7
IndustryPayments. (2026). GHASSAN ZALZALEH, NPI 1992704035, CMS profile ID 45019. General Payments, PY2024; 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 4; records 1–50 of 200 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=2024&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/e6b17c6a-2534-4207-a4a1-6746a14911ff.
Bluebook
GHASSAN ZALZALEH, NPI 1992704035, CMS profile ID 45019, IndustryPayments, General Payments, PY2024; 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 4; records 1–50 of 200 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/e6b17c6a-2534-4207-a4a1-6746a14911ff. https://industrypayments.org/provider/npi-1992704035?year=2024&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 · PY2024

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

General Payments · PY2024 · Physicians and non-physician practitioners · CMS publication 2026-06-30

200 matching records · $16,234.09 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 200 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 200.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Tempus AI, Inc $27.7012/27/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1150177709 CMS
Takeda Pharmaceuticals U.S.A., Inc. $31.3512/23/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1144970973 CMS
ARRAY BIOPHARMA INC $24.5912/19/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1131445755 CMS
Eisai Inc. $24.3912/17/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1110746896 CMS
Merck Sharp & Dohme LLC $27.6412/16/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1141720742 CMS
Merck Sharp & Dohme LLC $29.6612/13/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1141876622 CMS
Immunocore Limited $25.0512/12/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1103098259 CMS
Agios Pharmaceuticals, Inc. $17.1712/10/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1149643134 CMS
Eisai Inc. $22.1012/10/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1110746898 CMS
Exelixis Inc. $17.3712/10/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1138558114 CMS
E.R. Squibb & Sons, L.L.C. $20.2212/09/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1101338745 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $29.5412/05/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1118265127 CMS
PFIZER INC. $19.6312/03/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1131234777 CMS
BeiGene USA, Inc. $49.0012/02/2024 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1188060946 CMS
Pharmacosmos Therapeutics Inc. $24.7212/02/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1154827249 CMS
Janssen Biotech, Inc. $38.9711/26/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1078599883 CMS
ABBVIE INC. $13.6611/25/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1106389642 CMS
E.R. Squibb & Sons, L.L.C. $21.9711/21/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1101338741 CMS
Janssen Biotech, Inc. $89.9911/21/2024 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1078599900 CMS
Lilly USA, LLC $27.5011/19/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1134978102 CMS
Novartis Pharmaceuticals Corporation $3.5911/14/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1087441044 CMS
E.R. Squibb & Sons, L.L.C. $18.6111/12/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1101338739 CMS
Alexion Pharmaceuticals, Inc. $34.6911/11/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1093909154 CMS
Alexion Pharmaceuticals, Inc. $83.9911/11/2024 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1093996608 CMS
Lilly USA, LLC $29.2011/11/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1135002328 CMS
Genentech USA, Inc. $15.9411/06/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1133014893 CMS
Daiichi Sankyo Inc. $29.6111/04/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1089501376 CMS
Astellas Pharma US Inc $22.3510/31/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1139423021 CMS
Novartis Pharmaceuticals Corporation $7.3110/31/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1087441038 CMS
Novartis Pharmaceuticals Corporation $2.2410/31/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1087441040 CMS
Spectrum Pharmaceuticals Inc. $13.1310/31/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1150654889 CMS
Merck Sharp & Dohme LLC $7.5710/29/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1141720740 CMS
Regeneron Healthcare Solutions, Inc. $34.6210/29/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1114260858 CMS
Astellas Pharma US Inc $27.1810/24/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1139422775 CMS
Alexion Pharmaceuticals, Inc. $13.7210/22/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1093996935 CMS
TAIHO ONCOLOGY, INC. $20.6610/21/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1137941278 CMS
AstraZeneca Pharmaceuticals LP $23.2210/17/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1105477795 CMS
Novartis Pharmaceuticals Corporation $14.1210/17/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1087441036 CMS
Takeda Pharmaceuticals U.S.A., Inc. $30.5710/17/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1144970971 CMS
Astellas Pharma US Inc $15.9110/16/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1139411937 CMS
Janssen Biotech, Inc. $29.0610/15/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1078599806 CMS
JAZZ PHARMACEUTICALS INC. $28.7310/10/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1150241316 CMS
ABBVIE INC. $18.0610/09/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1106389640 CMS
ABBVIE INC. $19.2410/08/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1106389638 CMS
ADC Therapeutics America, Inc. $19.5810/08/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1121192277 CMS
GE HEALTHCARE $20.6210/03/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1144686718 CMS
Agios Pharmaceuticals, Inc. $15.4510/02/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1149641610 CMS
Novartis Pharmaceuticals Corporation $19.4010/02/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1087441028 CMS
PFIZER INC. $5.7610/02/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1132133431 CMS
PFIZER INC. $11.7709/30/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1131364407 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.