Ashley Marie Chwastyk, AU.D.

Primary specialty

AudiologistTaxonomy code 231H00000X

License

3219 Issued in CA

Practice address

496 1St St Ste 120
Los Altos, CA 94022-3677

Phone

(650) 941-0664

Fax

(650) 941-2892

NPI assigned

Apr 12, 2017

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 CA

Enrollment records 1

Specialty

Qualified Audiologist

Education

Other, 2017

Medicare assignment

May accept Medicare assignment

Group practices

Pacific Hearing Clinic Inc.Group PAC ID 0547356081, 8 clinicians

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 and National Provider Directory roles.

• Pacific Hearing Clinic Inc.

  dba Pacific Hearing Service

  • Audiologist-Hearing Aid Fitter
  • Menlo Park, CA
  • NPI 1073652673
  Medicare reassignment Care Compare group NPD
• Pacific Hearing Clinic

  dba Pacific Hearing Service

  • Audiologist-Hearing Aid Fitter
  • Los Altos, CA
  • NPI 1407909062
  NPD

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

{
    "created_epoch": "1491955200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755648000000",
    "number": "1013441583",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "496 1ST ST STE 120",
            "city": "LOS ALTOS",
            "state": "CA",
            "postal_code": "940223677",
            "telephone_number": "650-941-0664",
            "fax_number": "650-941-2892"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "496 1ST ST STE 120",
            "city": "LOS ALTOS",
            "state": "CA",
            "postal_code": "940223677",
            "telephone_number": "650-941-0664",
            "fax_number": "650-941-2892"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHWASTYK",
        "first_name": "ASHLEY",
        "middle_name": "MARIE",
        "credential": "AU.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-04-12",
        "last_updated": "2025-08-20",
        "certification_date": "2025-08-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "231H00000X",
            "taxonomy_group": "",
            "desc": "Audiologist",
            "state": "CA",
            "license": "3219",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Martin Frank Choy, M.D.
• Nancy Nganling Choy
• Kim Rosalie Christie-Wise, PTA
• Audrey Chu, OD
• Belsten Chua
• Ciara V Johnson MD Inc.
• Deborah Wilson Clark, AU.D.
• Classic Acupuncture Inc (Classic Acupuncture & Herbal Clinic)
• Ruth Elizabeth Clifford, PH.D.
• Coast Psychiatry Medical Group

• Audiologist in Los Altos, CA
• Providers in Los Altos, CA by specialty
• Audiologist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 20, 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.