Mary Tosiou, MD - Medicare Emergency Medicine in Berwyn, IL

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Mary Tosiou, MD is a medicare enrolled "Emergency Medicine" physician in Berwyn, Illinois. Her current practice location is 3249 Oak Park Ave, Berwyn, Illinois. You can reach out to her office (for appointments etc.) via phone at (708) 783-9100.

Mary Tosiou is licensed to practice in Illinois (license number 036-103005) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1801811294.

Contact Information

Mary Tosiou, MD
3249 Oak Park Ave,
Berwyn, IL 60402-3429
(708) 783-9100
Not Available

Map and Direction




Physician's Profile

Full NameMary Tosiou
GenderFemale
SpecialityEmergency Medicine
Location3249 Oak Park Ave, Berwyn, Illinois
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1801811294
  • Provider Enumeration Date: 07/13/2006
  • Last Update Date: 12/09/2008
  Medicare PECOS Information:
  • PECOS PAC ID: 8527124577
  • Enrollment ID: I20090227000234

Medical Identifiers

Medical identifiers for Mary Tosiou such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1801811294NPI-NPPES
036103005MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 036-103005 (Illinois)Primary
207P00000XEmergency Medicine 4301069892 (Michigan)Secondary

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. Mary Tosiou allows following entities to bill medicare on her behalf.
Entity NameNorthwestern Medical Faculty Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346235314
PECOS PAC ID: 4587576814
Enrollment ID: O20031105000541
Entity NameCepamerica Illinois Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1912283110
PECOS PAC ID: 3274793633
Enrollment ID: O20120322000587

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. Mary Tosiou 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
Mary Tosiou, MD
75 Remit Drive, Lockbox 1209,
Chicago, IL 60675-1209

Ph: (866) 916-5259		Mary Tosiou, MD
3249 Oak Park Ave,
Berwyn, IL 60402-3429

Ph: (708) 783-9100

Reviews and Comments


Emergency Medicine Doctors in Berwyn, IL

Paul Faine, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3249 Oak Park Ave, Berwyn, IL 60402
Phone: 708-783-9100    
Dr. Carlos Castaneda, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3249 Oak Park Ave, Berwyn, IL 60402
Phone: 708-795-3159    
Camille A Enriquez, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3249 Oak Park Ave, Berwyn, IL 60402
Phone: 708-783-9100    
Dr. Jaime Moreno, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3249 S. Oak Park Ave., Berwyn, IL 60402
Phone: 708-783-7070    
Anna Ngoc Nguyen, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3249 Oak Park Ave, Berwyn, IL 60402
Phone: 708-783-6000    
Judith Jean-baptiste, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 3249 Oak Park Ave, Berwyn, IL 60402
Phone: 708-783-9100    
Diana R Williams, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 3249 Oak Park Ave, Berwyn, IL 60402
Phone: 708-783-9100    

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.