Yousef Nassar, - Medicare Gastroenterology in Oak Lawn, IL

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Yousef Nassar, is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Oak Lawn, Illinois. He graduated from medical school in 2014 and has 12 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice Mount Sinai Community Foundation and his current practice location is 4400 W 95th St Ste 310, Oak Lawn, Illinois. You can reach out to his office (for appointments etc.) via phone at (708) 684-9230.

Yousef Nassar is licensed to practice in Illinois (license number 036158704) 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 1750730677.

Contact Information

Yousef Nassar,
4400 W 95th St Ste 310,
Oak Lawn, IL 60453-2660
(708) 684-9230
Not Available

Map and Direction




Physician's Profile

Full NameYousef Nassar
GenderMale
SpecialityGastroenterology
Experience12 Years
Location4400 W 95th St Ste 310, 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:
  • Yousef Nassar graduated from medical school in 2014
  NPI Data:
  • NPI Number: 1750730677
  • Provider Enumeration Date: 06/10/2016
  • Last Update Date: 07/24/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 5092050930
  • Enrollment ID: I20220309003041

Medical Identifiers

Medical identifiers for Yousef Nassar such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1750730677NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 036158704 (Illinois)Secondary
207RG0100XInternal Medicine - Gastroenterology 036158704 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mt Sinai Hospital Medical CenterChicago, ILHospital
Holy Cross HospitalChicago, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mount Sinai Community Foundation5991600405247

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. Yousef Nassar 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 NameMount Sinai Community Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376715896
PECOS PAC ID: 5991600405
Enrollment ID: O20040202001032

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. Yousef Nassar 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
Yousef Nassar,
29373 Network Pl,
Chicago, IL 60673-1293

Ph: (847) 390-5900		Yousef Nassar,
4400 W 95th St Ste 310,
Oak Lawn, IL 60453-2660

Ph: (708) 684-9230

Reviews and Comments


Internal Medicine Doctors in Oak Lawn, IL

Darshika Chhabra, MD
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Practice Location: 4400 W 95th St Ste 112, Oak Lawn, IL 60453
Phone: 708-684-7100    
Ronald Myint, M.D.
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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.
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Practice Location: 4440 W 95th St, Oak Lawn, IL 60453
Phone: 708-684-8000    
Zynab Adewusi,
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Medicare: Not Enrolled in Medicare
Practice Location: 4220 W 95th St Ste 200, Oak Lawn, IL 60453
Phone: 708-398-0287    
Mahesh Vadali, M.D.
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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
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 4440 W 95th St, Oak Lawn, IL 60453
Phone: 708-684-8000    
Alexandria Clarke Kregor, DO
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 4440 W 95th St, Oak Lawn, IL 60453
Phone: 708-684-5673    

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.