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MARIE T OCONNOR PARKER MD
NPI 1528035789
Emergency Medicine in Lemont, IL

Active since March 07, 2006PECOS EnrolledAccepts Medicare Assignment
15900 W 127TH ST, LEMONT, IL 60439(630) 243-7100 Get Directions Write a Review

NPPES record last updated: October 24, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Marie T Oconnor Parker Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARIE T OCONNOR PARKER MD (NPI 1528035789) is an individual emergency medicine provider in Lemont, Illinois, licensed in Illinois (036106251) and active in the NPI registry since March 2006. She is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Central Dupage Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1528035789
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameMARIE T OCONNOR PARKERCredential: MD
Location Address15900 W 127TH STLemont, IL 60439-2910
Mailing AddressPo Box 95305Chicago, IL 60694-5305 · (877) 485-4474
Phone(630) 243-7100
Sole ProprietorNo
Medical School CMSLoyola University Of Chicago, Stritch School Of MedicineGraduated 1999
Enumeration DateMarch 7, 2006
Last NPPES UpdateOctober 24, 2025
NPPES CertifiedOctober 24, 2025
✔ NPI 1528035789 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in IL · 036106251✔ Licensed in MN · 46599
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
15900 W 127TH ST, Lemont, IL 60439
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Other Names 1

Former Name (1)Marie Therese O'connor

Secondary Practice Locations 2

Location 16840 Main StDowners Grove, IL 60516-3425 · Phone (630) 275-6840
Location 2885 Roosevelt Rd Ste 100Glen Ellyn, IL 60137-6141 · Phone (630) 938-6000 · Fax (630) 384-6229

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Marie T Oconnor Parker Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8325024052
PECOS Enrollment IDI20070718000458
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northwestern Medicine Central Dupage Hospital

Acute Care Hospitals · Winfield, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140242
Location25 North Winfield RoadWinfield, IL 60190 · Du Page County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60439 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ALLISON EILEEN MURCHISON M.D.
Ophthalmology
15900 W 127TH ST, SUITE 210
LEMONT, IL 60439
Dupage County (630) 257-1117
ALLISON E. MURCHISON, M.D., S.C.
Ophthalmology
15900 W 127TH ST, SUITE 210
LEMONT, IL 60439
Dupage County (630) 257-1117
DR. FAITH SUZANNE MYERS D.O.
Pediatrics
15900 W 127TH ST, SUITE 261
LEMONT, IL 60439
Dupage County (630) 243-7683
DU PAGE MEDICAL GROUP LTD
Durable Medical Equipment & Medical Supplies
15900 W 127TH ST, STE 111
LEMONT, IL 60439
Dupage County (630) 243-7385
KIDS PLUS PEDIATRIC DENTISTRY
Dentist (Pediatric Dentistry)
15900 W 127TH ST
LEMONT, IL 60439
Dupage County (630) 243-6200
PEDIATRIC WELLNESS CENTER
Pediatrics
15900 W 127TH ST, SUITE 261
LEMONT, IL 60439
Dupage County (630) 243-7683

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marie Oconnor Parker's NPI number?

The NPI number for Marie Oconnor Parker is 1528035789. It was assigned to this individual provider in the NPPES registry on March 7, 2006. The provider is also known as Marie Therese O'connor.

Where is Marie Oconnor Parker located?

Marie Oconnor Parker practices at 15900 W 127th St, Lemont, IL 60439. The listed phone number is (630) 243-7100.

What is Marie Oconnor Parker's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Marie Oconnor Parker enrolled in Medicare?

Yes. Marie Oconnor Parker is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Marie Oconnor Parker affiliated with any hospitals?

According to CMS data, Marie Oconnor Parker is affiliated with Northwestern Medicine Central Dupage Hospital.

When was this NPI record last updated?

The NPPES record for Marie Oconnor Parker was last updated on October 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.