Courtney Erin Iwersen, APN-CNP

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

209016723 Issued in IL

Practice address

133 E Brush Hill Rd Ste 310
Elmhurst, IL 60126-5662

Phone

(331) 221-9003

Fax

(331) 221-2743

NPI assigned

Oct 10, 2017

Last updated

Apr 9, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in IL

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Endeavor Health Medical GroupGroup PAC ID 2163334699, 3,330 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Elmhurst Memorial Hospital Hospital, Elmhurst, IL, CCN 140200
• Edward Hospital Hospital, Naperville, IL, CCN 140231

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

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ciwersen207739@direct.edward.org

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

• Endeavor Health Medical Group

  dba NorthShore University HealthSystem Faculty Practice Associates

  • Emergency Medicine Physician
  • Evanston, IL
  • NPI 1497701882
  Medicare reassignment Care Compare group NPD
• Elmhurst Memorial Healthcare

  dba Elmhurst Clinic

  • Multi-Specialty Clinic/Center
  • Elmhurst, IL
  • NPI 1457493454
  Medicare reassignment NPD
• Endeavor Health Medical Group

  dba NorthShore Anesthesia Group

  • Anesthesiology Physician
  • Evanston, IL
  • NPI 1265695944
  NPD
• Wyse Eyecare SC

  • Ophthalmology Physician
  • Northbrook, IL
  • NPI 1316272289
  NPD (past)

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

• Edward Hospital

  dba Endeavor Health Edward Hospital

  • General Acute Care Hospital
  • Naperville, IL
  • NPI 1427069632
  Care Compare affiliation
• Elmhurst Memorial Hospital

  dba Endeavor Health Elmhurst Hospital

  • General Acute Care Hospital
  • Elmhurst, IL
  • NPI 1548306343
  Care Compare affiliation

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

{
    "created_epoch": "1507593600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775692800000",
    "number": "1164932653",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4201 WINFIELD RD FL 4",
            "city": "WARRENVILLE",
            "state": "IL",
            "postal_code": "605554025",
            "telephone_number": "331-221-6377",
            "fax_number": "331-221-2357"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "133 E BRUSH HILL RD STE 310",
            "city": "ELMHURST",
            "state": "IL",
            "postal_code": "601265662",
            "telephone_number": "331-221-9003",
            "fax_number": "331-221-2743"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "IWERSEN",
        "first_name": "COURTNEY",
        "middle_name": "ERIN",
        "credential": "APN-CNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-10-10",
        "last_updated": "2026-04-09",
        "certification_date": "2026-04-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "IL",
            "license": "209016723",
            "primary": true
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "IL",
            "license": "209016723",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "ciwersen207739@direct.edward.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "133 E Brush Hill Rd Ste 310",
            "city": "Elmhurst",
            "state": "IL",
            "country_code": "US",
            "postal_code": "601265662",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Integrative Healthcare Associates LTD
• Ryan Andjulo Irving, PA-C
• Sarah Isaac, PT
• Marvina Maria Isufi, APN-CNP
• Ivan a Valcarenghi DDS LTD PC
• Keith Izban, M.D.
• Danielle Jabczynski
• Michelle Jackowski, CNM
• Fred L. Jacobs, MD
• Jacqueline Buschbach, DMD, PLLC (Elmhurst Dental Health Center)

• Nurse Practitioner in Elmhurst, IL
• Providers in Elmhurst, IL by specialty
• Nurse Practitioner in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 9, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.