Organization Active NPI

Apex Diagnostics Inc.

  • Radiology Clinic/Center
  • Darien, IL
National Provider Identifier
1154949329
Registry record updated Jul 6, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Radiology Clinic/CenterTaxonomy code 261QR0200X
Legal business name
APEX DIAGNOSTICS INC.
Practice address
8205 Cass Ave Ste 108C
Darien, IL 60561-5319
Phone
(877) 589-1424
NPI assigned
Jul 14, 2020
Last updated
Jul 6, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jul 6, 2026

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

Authorized official

Name
Mr. Christopher Chalokwu
Title
Director
Phone
(877) 589-1424

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Radiology Clinic/Center 261QR0200X Primary

Addresses

Primary practice location

8205 Cass Ave Ste 108C
Darien, IL 60561-5319

Mailing address

8205 Cass Ave Ste 108C
Darien, IL 60561-5319
Phone (877) 589-1424

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20201006000849 IL Part B Supplier - Independent Diagnostic Testing Facility (Idtf) 9830518174 Practice locations: Darien, IL

National Provider Directory

National Provider Directory

Locations

6201 W Howard St
Ste 211A
Niles, IL 60714
Phone (708) 428-2996

Practitioners & affiliated clinicians

Practitioners 4

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": "1594684800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1783296000000",
    "number": "1154949329",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8205 CASS AVE STE 108C",
            "city": "DARIEN",
            "state": "IL",
            "postal_code": "605615319",
            "telephone_number": "877-589-1424"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8205 CASS AVE STE 108C",
            "city": "DARIEN",
            "state": "IL",
            "postal_code": "605615319",
            "telephone_number": "877-589-1424"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "APEX DIAGNOSTICS INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2020-07-14",
        "last_updated": "2026-07-06",
        "certification_date": "2026-07-06",
        "status": "A",
        "authorized_official_last_name": "CHALOKWU",
        "authorized_official_first_name": "CHRISTOPHER",
        "authorized_official_title_or_position": "DIRECTOR",
        "authorized_official_telephone_number": "877-589-1424",
        "authorized_official_name_prefix": "Mr."
    },
    "taxonomies": [
        {
            "code": "261QR0200X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Radiology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Darien, IL

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 6, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.