Olivia Ann Brennan, AU.D.

Primary specialty

AudiologistTaxonomy code 231H00000X

License

3492387 Issued in NY

Practice address

58 S Main St
Sayville, NY 11782-3104

Phone

(631) 750-6377

Fax

(518) 504-6661

NPI assigned

Jul 21, 2025

Last updated

Jul 21, 2025By the provider in NPPES

Sex

Female

Sole proprietor

No

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 NY

Enrollment records 1

Specialty

Qualified Audiologist

Education

Other, 2025

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Audiology Services Company USA, LLC

  dba Hearinglife

  • Hearing and Speech Clinic/Center
  • Somerset, NJ
  • NPI 1033585302

  Audiologist, NY

  Medicare reassignment NPD
• Audiology Services Company USA, LLC

  • Hearing and Speech Clinic/Center
  • Sayville, NY
  • NPI 1689156770
  NPD
• Audiology Services Company USA, LLC

  • Hearing and Speech Clinic/Center
  • Melbourne, FL
  • NPI 1902318108
  NPD

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

{
    "created_epoch": "1753056000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753056000000",
    "number": "1750263992",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "58 S MAIN ST",
            "city": "SAYVILLE",
            "state": "NY",
            "postal_code": "117823104",
            "telephone_number": "631-750-6377",
            "fax_number": "518-504-6661"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "58 S MAIN ST",
            "city": "SAYVILLE",
            "state": "NY",
            "postal_code": "117823104",
            "telephone_number": "631-750-6377",
            "fax_number": "518-504-6661"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BRENNAN",
        "first_name": "OLIVIA",
        "middle_name": "ANN",
        "credential": "AU.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-07-21",
        "last_updated": "2025-07-21",
        "certification_date": "2025-07-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "231H00000X",
            "taxonomy_group": "",
            "desc": "Audiologist",
            "state": "NY",
            "license": "3492387",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• James Thomas Bopp, MD
• Daria Bossert, RN
• Sophia Boulukos, M.D
• Ellen Brady, LMHC
• Mary Lou Brennan, MS
• Brent Thomas Kempf, D.P.M. (Sayville Foot Care)
• Bright Path NP in Psychiatry
• Kelly Ann Britt, MS, CCC-SLP
• Michael Brody, DDS
• Eileen Mary Brophy, SLP/CCC

• Audiologist in Sayville, NY
• Providers in Sayville, NY by specialty
• Audiologist in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 21, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• 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.