Ghassan Zalzaleh, MD - Medicare Internal Medicine in Oak Lawn, IL

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Ghassan Zalzaleh, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Oak Lawn, Illinois. He graduated from medical school in 1987 and has 37 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Affiliated Oncologists Llc and his current practice location is 4400 W 95th St, Suite 311, Oak Lawn, Illinois. You can reach out to his office (for appointments etc.) via phone at (708) 424-9710.

Ghassan Zalzaleh is licensed to practice in Illinois (license number 036089713) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1992704035.

Contact Information

Ghassan Zalzaleh, MD
4400 W 95th St, Suite 311,
Oak Lawn, IL 60453-2654
(708) 424-9710
(708) 424-4331

Map and Direction




Physician's Profile

Full NameGhassan Zalzaleh
GenderMale
SpecialityInternal Medicine
Experience37 Years
Location4400 W 95th St, Oak Lawn, Illinois
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Ghassan Zalzaleh graduated from medical school in 1987
  NPI Data:
  • NPI Number: 1992704035
  • Provider Enumeration Date: 07/20/2005
  • Last Update Date: 07/10/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 7517936099
  • Enrollment ID: I20040930000994

Medical Identifiers

Medical identifiers for Ghassan Zalzaleh such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1992704035NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology 036089713 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Advocate Christ Hospital & Medical CenterOak lawn, ILHospital
Palos Community HospitalPalos heights, ILHospital
Silver Cross Hospital And Medical CentersNew lenox, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Affiliated Oncologists Llc236560656339

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Ghassan Zalzaleh allows following entities to bill medicare on his behalf.
Entity NameAdvocate Health And Hospitals Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700824455
PECOS PAC ID: 7810800935
Enrollment ID: O20031106000064
Entity NameBonaventure Medical Foundation Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1588775647
PECOS PAC ID: 7517863178
Enrollment ID: O20031212000374
Entity NameAffiliated Oncologists Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1225314362
PECOS PAC ID: 2365606563
Enrollment ID: O20120620000456
Entity NameAhp Specialty Care Nfp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619334406
PECOS PAC ID: 9931491107
Enrollment ID: O20160708000080

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Ghassan Zalzaleh is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Ghassan Zalzaleh, MD
62647 Collection Center Dr,
Chicago, IL 60693-0626

Ph: (815) 895-2144		Ghassan Zalzaleh, MD
4400 W 95th St, Suite 311,
Oak Lawn, IL 60453-2654

Ph: (708) 424-9710

Reviews and Comments


Internal Medicine Doctors in Oak Lawn, IL

Darshika Chhabra, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 4400 W 95th St Ste 112, Oak Lawn, IL 60453
Phone: 708-684-7100    
Ronald Myint, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 4400 W 95th St, Suite 311, Oak Lawn, IL 60453
Phone: 708-424-9710    Fax: 708-424-8904
Dr. Mandy Luma Enshiwat, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 4440 W 95th St, Oak Lawn, IL 60453
Phone: 708-684-8000    
Mahesh Vadali, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 10458 S Pulaski Rd, Oak Lawn, IL 60453
Phone: 708-636-1818    Fax: 708-636-2151
Mihaela Mihailescu, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 4440 W 95th St, Oak Lawn, IL 60453
Phone: 708-684-8000    
Alexandria Clarke Kregor, DO
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 4440 W 95th St, Oak Lawn, IL 60453
Phone: 708-684-5673    
Dr. Bruce M Abramowitz, M.D.,F.A.C.C.
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 10837 S Cicero Ave, Suite 200, Oak Lawn, IL 60453
Phone: 708-636-7575    Fax: 708-636-6193

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.