Stephanie Mattern, LCSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

123940 Issued in CA

Practice address

1870 Cordell CT Ste 101
El Cajon, CA 92020-0915

Phone

(619) 755-9961

NPI assigned

Aug 8, 2022

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

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

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Social Worker

Education

Other, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Sokyahealth Medical Group PCGroup PAC ID 8628463015, 180 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: stephanie.mattern.p1@direct.sokya.nextgenshare.com

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.

• Sokyahealth Medical Group PC

  • Mental Health Counselor
  • San Diego, CA
  • NPI 1942970330
  Medicare reassignment Care Compare group NPD
• Headlight Health Medical Group PLLC

  • Psychiatry Physician
  • San Diego, CA
  • NPI 1649064486

  Mental Health

  NPD

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

{
    "created_epoch": "1659916800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1741910400000",
    "number": "1598492613",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1870 CORDELL CT STE 101",
            "city": "EL CAJON",
            "state": "CA",
            "postal_code": "920200915",
            "telephone_number": "619-755-9961"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1870 CORDELL CT STE 101",
            "city": "EL CAJON",
            "state": "CA",
            "postal_code": "920200915",
            "telephone_number": "619-755-9961"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MATTERN",
        "first_name": "STEPHANIE",
        "credential": "LCSW",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2022-08-08",
        "last_updated": "2025-03-14",
        "certification_date": "2025-03-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "CA",
            "license": "123940",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Bassam Massaad, RPH
• Massanu Sirleaf Inc.
• Katelyn Massey
• Rachel Mast
• Claire Masterson
• Judy Kay Matthews, PH.D
• Sylvester Matthews
• Matti Transportation Inc
• Ivette Matti
• Leeza Matti

• Clinical Social Worker in El Cajon, CA
• Providers in El Cajon, CA by specialty
• Clinical Social Worker in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 14, 2025; 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.