Irena Zalewska, MD - Medicare Gastroenterology in St Clair Shores, MI

Irena Zalewska, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in St Clair Shores, Michigan. She went to Wayne State University School Of Medicine and graduated in 1998 and has 26 years of diverse experience with area of expertise as Gastroenterology. She is a member of the group practice Gi Medical Assoc Pc and her current practice location is 28963 Little Mack Ave, Gi Medicine Associates Pc Suite 101, St Clair Shores, Michigan. You can reach out to her office (for appointments etc.) via phone at (586) 447-0700.

Irena Zalewska is licensed to practice in Michigan (license number 4301072116) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1407846751.

Contact Information

Irena Zalewska, MD
28963 Little Mack Ave, Gi Medicine Associates Pc Suite 101,
St Clair Shores, MI 48081-3015
(586) 447-0700
(586) 498-0707

Map and Direction




Physician's Profile

Full NameIrena Zalewska
GenderFemale
SpecialityGastroenterology
Experience26 Years
Location28963 Little Mack Ave, St Clair Shores, Michigan
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Irena Zalewska attended and graduated from Wayne State University School Of Medicine in 1998
  NPI Data:
  • NPI Number: 1407846751
  • Provider Enumeration Date: 10/27/2005
  • Last Update Date: 06/29/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 9638154701
  • Enrollment ID: I20040622001358

Medical Identifiers

Medical identifiers for Irena Zalewska such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1407846751NPI-NPPES
7718567OtherAETNA
459576110MedicaidMI
6968970OtherCIGNA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 4301072116 (Michigan)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Ascension Macomb Oakland Hosp-warren CampusWarren, MIHospital
Beaumont Hospital - Grosse PointeGrosse pointe, MIHospital
Ascension St John HospitalDetroit, MIHospital
Ascension River District HospitalEast china, MIHospital
Beaumont Hospital, TroyTroy, MIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Gi Medical Assoc Pc337552521513

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. Irena Zalewska allows following entities to bill medicare on her behalf.
Entity NameGi Medical Assoc Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1154311405
PECOS PAC ID: 3375525215
Enrollment ID: O20040603001029

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. Irena Zalewska 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
Irena Zalewska, MD
28963 Little Mack Ave, Gi Medicine Associates Pc Suite 101,
St Clair Shores, MI 48081-3015

Ph: (586) 447-0700
Irena Zalewska, MD
28963 Little Mack Ave, Gi Medicine Associates Pc Suite 101,
St Clair Shores, MI 48081-3015

Ph: (586) 447-0700

Reviews and Comments


Internal Medicine Doctors in St Clair Shores, MI

Sudhanshu Patel, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 28963 Little Mack Ave, Suite 101, St Clair Shores, MI 48081
Phone: 586-447-0700    Fax: 586-498-0707
Dr. George B Ghanem, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 24211 Little Mack Ave, St Clair Shores, MI 48080
Phone: 586-498-0440    Fax: 586-498-0401
Wafaa S. Hanna, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 25319 Little Mack Ave, St Clair Shores, MI 48081
Phone: 586-447-4000    Fax: 586-447-4009
Dr. Joan S Crawford, DO
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 24211 Little Mack Ave, St Clair Shores, MI 48080
Phone: 586-498-0440    Fax: 586-498-0401
Thomas Patrick Davis, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 24211 Little Mack Ave, St Clair Shores, MI 48080
Phone: 586-498-0440    Fax: 586-498-0401
Eric Newman Neisch, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 28315 Harper Avenue, St Clair Shores, MI 48081
Phone: 586-552-1710    Fax: 586-552-1715
Magdy George Wanis, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 23600 Harper Ave, Ste 103, St Clair Shores, MI 48080
Phone: 586-585-2570    Fax: 586-585-2574

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.