Mari Mortensen LCSW PLLC

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

Legal business name

MARI MORTENSEN LCSW PLLC

Practice address

101 N Marion St Ste 300
Oak Park, IL 60301-1023

Phone

(708) 650-4356

NPI assigned

Jul 24, 2024

Organization subpart

No

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

Authorized official

Name

Mari Mortensen, LCSWNPI 1578276770

Title

Owner

Phone

(708) 650-4356

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in IL

Enrollment records 1

Locations

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Mari Mortensen, LCSW

  • Clinical Social Worker
  • Darien, IL
  • NPI 1578276770
  Medicare reassignment NPD Authorized official

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

{
    "created_epoch": "1721779200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1740614400000",
    "number": "1780412403",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9265 WATERFALL GLEN BLVD",
            "city": "DARIEN",
            "state": "IL",
            "postal_code": "605615282",
            "telephone_number": "708-650-4356"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "101 N MARION ST STE 300",
            "city": "OAK PARK",
            "state": "IL",
            "postal_code": "603011023",
            "telephone_number": "708-650-4356"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MARI MORTENSEN LCSW PLLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2024-07-24",
        "last_updated": "2025-02-27",
        "certification_date": "2025-02-27",
        "status": "A",
        "authorized_official_last_name": "MORTENSEN",
        "authorized_official_first_name": "MARI",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "708-650-4356",
        "authorized_official_credential": "LCSW"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Social Worker, Clinical",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "261QM0855X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Adolescent and Children Mental Health",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Mary Joy Maravilla
• Todd Marcheschi, MS/CCC/SLP/L
• Marcia Pavlou PHD PC
• Natalia Marczak, PT
• Iyla Margulius, OTR.L
• Maria Cecilia Dahn, M.D.
• Maria Slobodian MD SC
• Nora Mariduena, PSYD
• Anthony M Marinelli, MD
• Donna M Marino, PSYD

• Clinical Social Worker in Oak Park, IL
• Providers in Oak Park, IL by specialty
• Clinical Social Worker in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 27, 2025; 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.