PROVIDER PROFILE · NPI 1992704035

Ghassan ZalzalehMD

PRACTICEAFFILIATED ONCOLOGISTS, LLCSee all providers at this practice →

Internal MedicineOak Lawn, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,640

Unique beneficiaries

—

Total services

121,387

Distinct HCPCS

Medicare payment

$2.4M

Peer benchmark

Total Medicare services vs. 3,790 Internal Medicine providers in IL — top quintile (cohort median 760).

PRESCRIBING · PART D · 2024

Total Rx claims

316

Beneficiaries

—

Total drug cost

$802K

Distinct drugs

Brand share

43.0%

Top prescribed drugs

Apixaban64 claims

Prednisone44 claims

Hydrocodone/Acetaminophen33 claims

Lenalidomide28 claims

Imatinib Mesylate23 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$16K

Payment records

199

By payment type

Consulting Fee$11K

Food and Beverage$4K

Travel and Lodging$820

Education$174

REFERRAL NETWORK

Where Ghassan Zalzaleh's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 56 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
High Technology Inc Independent Diagnostic Testing Facility (IDTF) · Palos Heights, IL	63	224
Masood Qazi Cardiology · Oak Lawn, IL	55	210
Beck Hur Diagnostic Radiology · Lake Forest, IL	47	82
PIERCE, KENNETH	46	129
Mahmoud Mahafzah Hematology-Oncology · Chicago Ridge, IL	38	191
Mauna Pandya Hematology-Oncology · Oak Lawn, IL	38	113
James Song Diagnostic Radiology · Oak Lawn, IL	37	87
Yanxia Li Pathology · Oak Lawn, IL	37	111
Jeffrey Neiger Clinical Cardiac Electrophysiology · Oak Lawn, IL	33	93
HELLER, RICHARD	30	47
Anisha Martin Diagnostic Radiology · Oak Lawn, IL	28	53
WALLOCH, JAMI	28	64

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history