Organization Active NPI

April Nisan Ilkmen PLLC

  • Adult Mental Health Clinic/Center
  • Chicago, IL
National Provider Identifier
1104629914
Registry record updated Mar 28, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Adult Mental Health Clinic/CenterTaxonomy code 261QM0850X
Legal business name
APRIL NISAN ILKMEN PLLC
Practice address
939 W North Ave Ste 750
Chicago, IL 60642-7142
Phone
(312) 478-6905
NPI assigned
Mar 28, 2025
Last updated
Mar 28, 2025By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Mar 28, 2025

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

Authorized official

Name
Dr. Elif Nisan Ilkmen Tayyabi, LMFT
Title
Owner
Phone
(312) 478-6905

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Adult Mental Health Clinic/Center 261QM0850X NU Primary

Addresses

Primary practice location

939 W North Ave Ste 750
Chicago, IL 60642-7142

Mailing address

17696 W Dawn CT
Gurnee, IL 60031-4220

National Provider Directory

National Provider Directory

Practitioners & affiliated clinicians

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

NPI Registry JSON

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

{
    "created_epoch": "1743120000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1743120000000",
    "number": "1104629914",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "17696 W DAWN CT",
            "city": "GURNEE",
            "state": "IL",
            "postal_code": "600314220"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "939 W NORTH AVE STE 750",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606427142",
            "telephone_number": "312-478-6905"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "APRIL NISAN ILKMEN PLLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-03-28",
        "last_updated": "2025-03-28",
        "certification_date": "2025-03-28",
        "status": "A",
        "authorized_official_last_name": "ILKMEN TAYYABI",
        "authorized_official_first_name": "ELIF NISAN",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "312-478-6905",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "LMFT"
    },
    "taxonomies": [
        {
            "code": "261QM0850X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Adult Mental Health",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Chicago, IL

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 28, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.