Dr Nancy Gryniewicz, MD - Medicare Family Practice in Oak Park, IL

Dr Nancy Gryniewicz, MD is a medicare enrolled "Family Medicine" physician in Oak Park, Illinois. She graduated from medical school in 1994 and has 30 years of diverse experience with area of expertise as Family Practice. She is a member of the group practice Family Medical Care, Ltd and her current practice location is 965 Lake St, Oak Park, Illinois. You can reach out to her office (for appointments etc.) via phone at (708) 383-0400.

Dr Nancy Gryniewicz is licensed to practice in Illinois (license number 036089707) 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 1558368043.

Contact Information

Dr Nancy Gryniewicz, MD
965 Lake St,
Oak Park, IL 60301-1292
(708) 383-0400
(708) 383-4314

Map and Direction




Physician's Profile

Full NameDr Nancy Gryniewicz
GenderFemale
SpecialityFamily Practice
Experience30 Years
Location965 Lake St, Oak Park, Illinois
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:
  • Dr Nancy Gryniewicz graduated from medical school in 1994
  NPI Data:
  • NPI Number: 1558368043
  • Provider Enumeration Date: 06/30/2005
  • Last Update Date: 05/24/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 3274657150
  • Enrollment ID: I20100830000312

Medical Identifiers

Medical identifiers for Dr Nancy Gryniewicz such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1558368043NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 036089707 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Central Dupage HospitalWinfield, ILHospital
Macneal HospitalBerwyn, ILHospital
Loyola University Medical CenterMaywood, ILHospital
West Suburban Medical CenterOak park, ILHospital
Gottlieb Memorial HospitalMelrose park, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Family Medical Care, Ltd87291026033

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. Dr Nancy Gryniewicz allows following entities to bill medicare on her behalf.
Entity NameFamily Medical Care, Ltd
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1831266923
PECOS PAC ID: 8729102603
Enrollment ID: O20100830000268

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. Dr Nancy Gryniewicz 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
Dr Nancy Gryniewicz, MD
965 Lake St,
Oak Park, IL 60301-1292

Ph: (708) 383-0400
Dr Nancy Gryniewicz, MD
965 Lake St,
Oak Park, IL 60301-1292

Ph: (708) 383-0400

Reviews and Comments


Family Medicine Doctors in Oak Park, IL

Allison Byrne,
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 1010 Lake St Ste 301, Oak Park, IL 60301
Phone: 708-524-8600    
Dr. Patrick Carbon, M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 610 S Maple Ave, Suite 2100, Oak Park, IL 60304
Phone: 708-660-2240    Fax: 708-660-2243
Dr. Ingrid Y Liu, DO
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 917 S Oak Park Ave Ste B, Oak Park, IL 60304
Phone: 708-386-3080    Fax: 708-386-3084
Mrs. Nauramy Aboro, MD, PHARMD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 14 Lake St, Oak Park, IL 60302
Phone: 773-378-3347    
Dr. Kathryn Vanbuskirk, D.O.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1010 Lake St Ste 301, Oak Park, IL 60301
Phone: 708-524-8600    
Dr. Judith Opena Disterhoft, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3 Erie Ct, Oak Park, IL 60302
Phone: 708-383-6200    
Connie D Chappel, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1515 N Harlem Ave, Suite 309, Oak Park, IL 60302
Phone: 708-386-4411    

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.