Natalia Baj-osiewicz, MD - Medicare Internal Medicine in Flint, MI

Natalia Baj-osiewicz, MD is a medicare enrolled "Internal Medicine" physician in Flint, Michigan. She graduated from medical school in 2013 and has 11 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Ascension Genesys Hospital and her current practice location is 420 S Saginaw St, Flint, Michigan. You can reach out to her office (for appointments etc.) via phone at (810) 232-3522.

Natalia Baj-osiewicz is licensed to practice in Michigan (license number 4301507488) 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 1619405123.

Contact Information

Natalia Baj-osiewicz, MD
420 S Saginaw St,
Flint, MI 48502-1803
(810) 232-3522
Not Available

Map and Direction




Physician's Profile

Full NameNatalia Baj-osiewicz
GenderFemale
SpecialityInternal Medicine
Experience11 Years
Location420 S Saginaw St, Flint, 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:
  • Natalia Baj-osiewicz graduated from medical school in 2013
  NPI Data:
  • NPI Number: 1619405123
  • Provider Enumeration Date: 05/28/2017
  • Last Update Date: 06/23/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 1658640677
  • Enrollment ID: I20220627003063

Medical Identifiers

Medical identifiers for Natalia Baj-osiewicz such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1619405123NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 4301507488 (Michigan)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Genesys Regional Medical Center - Health ParkGrand blanc, MIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Ascension Genesys Hospital206232303393

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. Natalia Baj-osiewicz allows following entities to bill medicare on her behalf.
Entity NameAscension Genesys Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1528283033
PECOS PAC ID: 2062323033
Enrollment ID: O20031208000842

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. Natalia Baj-osiewicz 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
Natalia Baj-osiewicz, MD
420 S Saginaw St,
Flint, MI 48502-1803

Ph: (810) 232-3522
Natalia Baj-osiewicz, MD
420 S Saginaw St,
Flint, MI 48502-1803

Ph: (810) 232-3522

Reviews and Comments


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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.