Janis Wiener, MD - Medicare Internal Medicine in Oak Park, IL

Janis Wiener, MD is a medicare enrolled "Internal Medicine" physician in Oak Park, Illinois. She went to University Of Rochester School Of Medicine And Dentistry and graduated in 1987 and has 37 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Loyola University Medical Center, Loyola Medical Group Llc 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) 386-3000.

Janis Wiener is licensed to practice in Illinois (license number 036-081282) 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 1750315586.

Contact Information

Janis Wiener, MD
965 Lake St,
Oak Park, IL 60301-1292
(708) 386-3000
Not Available

Map and Direction




Physician's Profile

Full NameJanis Wiener
GenderFemale
SpecialityInternal Medicine
Experience37 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:
  • Janis Wiener attended and graduated from University Of Rochester School Of Medicine And Dentistry in 1987
  NPI Data:
  • NPI Number: 1750315586
  • Provider Enumeration Date: 07/10/2006
  • Last Update Date: 05/05/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 2567547094
  • Enrollment ID: I20080308000019

Medical Identifiers

Medical identifiers for Janis Wiener such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1750315586NPI-NPPES
036081282MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease 036081282 (Illinois)Secondary
207R00000XInternal Medicine 036-081282 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Loyola Medicine Home CareOak brook, ILHome health agency
Loyola University Medical CenterMaywood, ILHospital
Macneal HospitalBerwyn, ILHospital
Gottlieb Memorial HospitalMelrose park, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Loyola University Medical Center3779488903857
Loyola Medical Group Llc630510954792

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. Janis Wiener allows following entities to bill medicare on her behalf.
Entity NameLoyola University Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336159961
PECOS PAC ID: 3779488903
Enrollment ID: O20031202000027
Entity NameLoyola Medical Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376041954
PECOS PAC ID: 6305109547
Enrollment ID: O20180420002063

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. Janis Wiener 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
Janis Wiener, MD
2368 Paysphere Cir,
Chicago, IL 60674-2368

Ph: () -
Janis Wiener, MD
965 Lake St,
Oak Park, IL 60301-1292

Ph: (708) 386-3000

Reviews and Comments


Internal Medicine Doctors in Oak Park, IL

Dr. Kristen Eileen Tobin Vealey, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 1121 South Blvd, Oak Park, IL 60302
Phone: 708-745-5744    Fax: 708-398-6890
Mr. Daniel B Stroupe, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 610 S Maple Ave Ste 4050, Oak Park, IL 60304
Phone: 708-383-0943    Fax: 708-613-4382
Dr. Ankur Sethi, MD
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Practice Location: 7035 North Ave, Oak Park, IL 60302
Phone: 708-680-3800    
Dr. Terry Lynn Clarbour, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1033 Randolph St, Oak Park, IL 60302
Phone: 708-955-8033    Fax: 708-445-8444
Paul Balter, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 855 Madison St, Oak Park, IL 60302
Phone: 708-386-1000    Fax: 708-386-2394
Steve Michel, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 965 Lake St, Oak Park, IL 60301
Phone: 708-386-3000    
Max L Harris, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3 Erie Ct, L700, Oak Park, IL 60302
Phone: 708-763-2536    Fax: 708-383-7655

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.