Individual provider Active NPI

Alyssa M Heisen

  • Audiologist
  • Torrance, CA
National Provider Identifier
1659269934
Registry record updated Jun 26, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
AudiologistTaxonomy code 231H00000X
License
AU4021 Issued in CA
Practice address
4201 Torrance Blvd Ste 140
Torrance, CA 90503-4500
Phone
(310) 540-4327
Fax
(310) 316-2685
NPI assigned
Jun 25, 2025
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 26, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Audiologist-Hearing Aid Fitter 237600000X AU4021 CA
Audiologist 231H00000X AU4021 CA Primary

Addresses

Primary practice location

4201 Torrance Blvd Ste 140
Torrance, CA 90503-4500

Mailing address

4201 Torrance Blvd Ste 140
Torrance, CA 90503-4500
Phone (310) 540-4327

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250807003700 CA Practitioner - Qualified Audiologist 7113425372 Reassigns benefits to 1 organization

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
AU4021CAMDAudiologist-Hearing Aid Fitter

Practice roles

OrganizationSpecialtyStatusNew patients
Parker Hearing Institute a Professional Corproration Audiologist CurrentSince Jun 9, 2025 Accepting new patients
William Lee Parker PH.D., & Associates, Inc. Audiologist Past Accepting new patients

Locations

4201 Torrance Blvd
Ste 140
Torrance, CA 90503
Phone (310) 540-4327

Organizations & group practices 2

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.

NPI Registry JSON

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

{
    "created_epoch": "1750809600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750896000000",
    "number": "1659269934",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4201 TORRANCE BLVD STE 140",
            "city": "TORRANCE",
            "state": "CA",
            "postal_code": "905034500",
            "telephone_number": "310-540-4327",
            "fax_number": "310-316-2685"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4201 TORRANCE BLVD STE 140",
            "city": "TORRANCE",
            "state": "CA",
            "postal_code": "905034500",
            "telephone_number": "310-540-4327",
            "fax_number": "310-316-2685"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HEISEN",
        "first_name": "ALYSSA",
        "middle_name": "M",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-06-25",
        "last_updated": "2025-06-26",
        "certification_date": "2025-06-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "237600000X",
            "taxonomy_group": "",
            "desc": "Audiologist-Hearing Aid Fitter",
            "state": "CA",
            "license": "AU4021",
            "primary": false
        },
        {
            "code": "231H00000X",
            "taxonomy_group": "",
            "desc": "Audiologist",
            "state": "CA",
            "license": "AU4021",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Torrance, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 26, 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.