Individual provider Active NPI

Maureen Ziwa Leidecker

  • Certified Registered Nurse Anesthetist
  • Park Ridge, IL
National Provider Identifier
1265024632
Registry record updated Jul 10, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
209025784 Issued in IL
Practice address
1775 Dempster St
Park Ridge, IL 60068-1143
Phone
(847) 723-6522
NPI assigned
Feb 8, 2021
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 10, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Certified Registered Nurse Anesthetist 367500000X 103925 WI
Certified Registered Nurse Anesthetist 367500000X 209025784 IL Primary

Addresses

Primary practice location

1775 Dempster St
Park Ridge, IL 60068-1143

Mailing address

29373 Network PL
Chicago, IL 60673-1293
Phone (847) 390-5900

Other practice location 1

363 E Wacker Dr Unit 2507
Chicago, IL 60601-5810
Phone (224) 558-6575

Other practice location 2

1000 N Oak Ave
Marshfield, WI 54449-5703
Phone (715) 387-5511

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address mleidecker433214@direct.myadvocateaurora.org Direct
FHIR URL https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20220927003325 IL Practitioner - Certified Registered Nurse Anesthetist (Crna) 1052797180 Reassigns benefits to 8 organizations

Care Compare profile

Medicare Care Compare
Specialty
Certified Registered Nurse Anesthetist (Crna)
Education
Other, 2014
Medicare assignment
May accept Medicare assignment
Group practices
Advocate Health and Hospitals CorporationGroup PAC ID 7810800935, 3,081 clinicians
Endeavor Health Medical GroupGroup PAC ID 2163334699, 3,330 clinicians
Clinical Colleagues IncGroup PAC ID 8729011333, 170 clinicians

Practice addresses (Care Compare)

1775 Dempster St
Park Ridge, IL 60068-1143
Phone (847) 723-9454

2650 Ridge Ave
Evanston, IL 60201-1700

2701 17TH St
Rock Island, IL 61201-5351
Phone (844) 937-1810

800 W Central Rd
Arlington Heights, IL 60005-2349
Phone (847) 618-1000

Hospital & facility affiliations

  • Advocate Lutheran General Hospital Hospital, Park Ridge, IL, CCN 140223
  • Trinity Rock Island Hospital, Rock Island, IL, CCN 140280
  • Northwest Community Hospital 1 Hospital, Arlington Heights, IL, CCN 140252
  • Marshfield Medical Center Hospital, Marshfield, WI, CCN 520037

Merit-based Incentive Payment System (MIPS)

Final score
84.9 of 100Reported as group
Quality
75.91
Promoting interoperability
99
Improvement activities
40
Cost
74.6

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Certified Registered Nurse

State licenses

LicenseStateTypeSpecialty
209025784ILMDCertified Registered Nurse Anesthetist

Practice roles

OrganizationSpecialtyStatusNew patients
Northstar Anesthesia of Illinois, LLC Nurse Anesthetist, Certified Registered CurrentSince Jul 31, 2024 Accepting new patients
Clinical Colleagues Inc Nurse Anesthetist, Certified Registered CurrentSince Jan 19, 2025 Accepting new patients
360 Anesthesia PLLC Nurse Anesthetist, Certified Registered CurrentSince Jun 1, 2023 Accepting new patients
Clinical Colleagues Inc Nurse Anesthetist, Certified Registered CurrentSince Jan 19, 2025 Accepting new patients
Advocate Health & Hospitals Corp. CurrentSince Jun 1, 2025 Accepting new patients
Advocate Health and Hospitals Corporation Current Accepting new patients
Endeavor Health Medical Group CurrentSince Dec 4, 2023 Accepting new patients
University Anesthesiologists SC Nurse Anesthetist, Certified Registered CurrentSince Apr 1, 2025 Accepting new patients
Advocate Health and Hospitals Corporation CurrentSince Jun 1, 2025 Accepting new patients
North American Partners in Anesthesia (Illinois), LLC CurrentSince Aug 18, 2022 Accepting new patients
Endeavor Health Medical Group CurrentSince Dec 4, 2023 Accepting new patients

Locations

3249 Oak Park Ave
Berwyn, IL 60402
Phone (708) 783-2696

214 McHenry Rd
Buffalo Grove, IL 60089
Phone (847) 459-1160

1653 W Congress Pkwy
Chicago, IL 60612
Phone (312) 942-3138

9532 Eagle Way
Chicago, IL 60678

29373 Network Pl
Chicago, IL 60673

4646 N Marine Dr
Chicago, IL 60640
Phone (773) 564-5102

1653 W Congress Pkwy
Ste 739
Chicago, IL 60612
Phone (312) 942-3134

77 N Airlite St
Elgin, IL 60123
Phone (847) 622-3407

2650 Ridge Ave
Ste 2218A
Evanston, IL 60201
Phone (847) 503-4222

2650 Ridge Ave
Evanston, IL 60201
Phone (847) 570-1206

695 N Kellogg St
Galesburg, IL 61401
Phone (309) 343-8131

333 Madison St
Joliet, IL 60435
Phone (815) 725-7222

500 W Court St
Kankakee, IL 60901
Phone (800) 585-4119

500 John Deere Rd
Moline, IL 61265
Phone (309) 779-2840

3 Erie Ct
Oak Park, IL 60302
Phone (708) 763-6200

520 S Maple Ave
Oak Park, IL 60304
Phone (708) 383-9300

1775 W Dempster St
Park Ridge, IL 60068
Phone (847) 723-5150

2701 17th St
Rock Island, IL 61201
Phone (309) 779-3200

5666 E State St
Rockford, IL 61108
Phone (815) 226-2000

1423 Chicago Rd
Sauk Village, IL 60411
Phone (708) 679-2160

575 N River St
Wilkes Barre, PA 18764
Phone (570) 552-1300

Interoperability endpoints

  • Direct secure messaging: mleidecker433214@direct.myadvocateaurora.org

Organizations & group practices 12

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 5

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1612742400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783641600000",
    "number": "1265024632",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "29373 NETWORK PL",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606731293",
            "telephone_number": "847-390-5900"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1775 DEMPSTER ST",
            "city": "PARK RIDGE",
            "state": "IL",
            "postal_code": "600681143",
            "telephone_number": "847-723-6522"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "363 E Wacker Dr Unit 2507",
            "address_purpose": "LOCATION",
            "city": "Chicago",
            "state": "IL",
            "postal_code": "606015810",
            "country_code": "US",
            "telephone_number": "224-558-6575",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1000 N Oak Ave",
            "address_purpose": "LOCATION",
            "city": "Marshfield",
            "state": "WI",
            "postal_code": "544495703",
            "country_code": "US",
            "telephone_number": "715-387-5511",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LEIDECKER",
        "first_name": "MAUREEN",
        "middle_name": "ZIWA",
        "name_prefix": "Miss",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-02-08",
        "last_updated": "2026-07-10",
        "certification_date": "2026-07-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "WI",
            "license": "103925",
            "primary": false
        },
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "IL",
            "license": "209025784",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mleidecker433214@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1775 Dempster St",
            "city": "Park Ridge",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600681143",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "1775 Dempster St",
            "city": "Park Ridge",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600681143",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Park Ridge, IL

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 10, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.