Marie T Oconnor Parker, MD - Medicare Emergency Medicine in Lemont, IL

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Marie T Oconnor Parker, MD is a medicare enrolled "Emergency Medicine" physician in Lemont, Illinois. She went to Loyola University Of Chicago, Stritch School Of Medicine and graduated in 1999 and has 27 years of diverse experience with area of expertise as Emergency Medicine. She is a member of the group practice Northwestern Medical Faculty Foundation and her current practice location is 15900 W 127th St, Lemont, Illinois. You can reach out to her office (for appointments etc.) via phone at (630) 243-7100.

Marie T Oconnor Parker is licensed to practice in Illinois (license number 036106251) 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 1528035789.

Contact Information

Marie T Oconnor Parker, MD
15900 W 127th St,
Lemont, IL 60439-2910
(630) 243-7100
Not Available

Map and Direction




Physician's Profile

Full NameMarie T Oconnor Parker
GenderFemale
SpecialityEmergency Medicine
Experience27 Years
Location15900 W 127th St, Lemont, 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:
  • Marie T Oconnor Parker attended and graduated from Loyola University Of Chicago, Stritch School Of Medicine in 1999
  NPI Data:
  • NPI Number: 1528035789
  • Provider Enumeration Date: 03/07/2006
  • Last Update Date: 10/24/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 8325024052
  • Enrollment ID: I20070718000458

Medical Identifiers

Medical identifiers for Marie T Oconnor Parker such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1528035789NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 46599 (Minnesota)Secondary
207P00000XEmergency Medicine 036106251 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Central Dupage HospitalWinfield, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Northwestern Medical Faculty Foundation45875768144367

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. Marie T Oconnor Parker allows following entities to bill medicare on her behalf.
Entity NameDupage Emergency Physicians Convenient Care Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1922000363
PECOS PAC ID: 6608840046
Enrollment ID: O20040823000566

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. Marie T Oconnor Parker 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
Marie T Oconnor Parker, MD
Po Box 95305,
Chicago, IL 60694-5305

Ph: (877) 485-4474		Marie T Oconnor Parker, MD
15900 W 127th St,
Lemont, IL 60439-2910

Ph: (630) 243-7100

Reviews and Comments


Emergency Medicine Doctors in Lemont, IL

Mr. Trevor John Pfaendtner, D.O
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 15900 W 127th St., Suite 221a, Lemont, IL 60439
Phone: 312-421-1016    Fax: 312-421-1017

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.