NPIMap

Organization Active NPI

South Bay Hearing & Balance Center

Doing business as Mission Audiology

  • Audiologist-Hearing Aid Fitter
  • Mission Viejo, CA
National Provider Identifier
1780022624
Registry record updated Apr 2, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Audiologist-Hearing Aid FitterTaxonomy code 237600000X
License
AU645 Issued in CA
Legal business name
SOUTH BAY HEARING & BALANCE CENTER
Doing business as
Mission Audiology
Practice address
26302 La Paz Rd Ste 107
Mission Viejo, CA 92691-5327
Phone
(949) 855-7898
Fax
(949) 855-1074
NPI assigned
Jun 13, 2013
Last updated
Apr 2, 2025By the provider in NPPES
Organization subpart
Yes
Parent organization
SOUTH BAY HEARING & BALANCE CENTERAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Apr 2, 2025

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

Authorized official

Name
Ian Gerszewski, AUDNPI 1295183978
Title
Owner
Phone
(310) 375-6161

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Audiologist-Hearing Aid FitterGroup: 193400000X MULTIPLE SINGLE SPECIALTY GROUP 237600000X AU645 CA Primary

Addresses

Primary practice location

26302 La Paz Rd Ste 107
Mission Viejo, CA 92691-5327

Mailing address

3734 Sepulveda Blvd
Torrance, CA 90505-2513
Phone (310) 375-6161

Other names 1

  • Mission Audiology Doing business as

National Provider Directory

National Provider Directory
Tax ID family
South Bay Hearing Balance2 organizations share this tax ID, including this one
Part of
South Bay Hearing Balance

Other organizations with this tax ID 1

Organizations that report the same tax identification number in the National Provider Directory.

Ownership & related parties

Parent organization (reported in NPPES) 1

This organization reports itself as a subpart in NPPES; the parent’s legal name matches this organization in the same state.

Practitioners & affiliated clinicians

Practitioners 16

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.

View all 16

NPI Registry JSON

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

{
    "created_epoch": "1371081600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1743552000000",
    "number": "1780022624",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3734 SEPULVEDA BLVD",
            "city": "TORRANCE",
            "state": "CA",
            "postal_code": "905052513",
            "telephone_number": "310-375-6161",
            "fax_number": "310-375-6101"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "26302 LA PAZ RD STE 107",
            "city": "MISSION VIEJO",
            "state": "CA",
            "postal_code": "926915327",
            "telephone_number": "949-855-7898",
            "fax_number": "949-855-1074"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "SOUTH BAY HEARING & BALANCE CENTER",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "SOUTH BAY HEARING & BALANCE CENTER",
        "enumeration_date": "2013-06-13",
        "last_updated": "2025-04-02",
        "certification_date": "2025-04-02",
        "status": "A",
        "authorized_official_last_name": "GERSZEWSKI",
        "authorized_official_first_name": "IAN",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "310-375-6161",
        "authorized_official_credential": "AUD"
    },
    "taxonomies": [
        {
            "code": "237600000X",
            "taxonomy_group": "193400000X MULTIPLE SINGLE SPECIALTY GROUP",
            "desc": "Audiologist-Hearing Aid Fitter",
            "state": "CA",
            "license": "AU645",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Mission Audiology",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Mission Viejo, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 2, 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.