Individual provider Active NPI

Grace Williams Phelps, AUD

  • Audiologist
  • Palo Alto, CA
National Provider Identifier
1811888613
Registry record updated Nov 4, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
AudiologistTaxonomy code 231H00000X
License
AU4030 Issued in CA
Practice address
730 Welch Rd
Palo Alto, CA 94304-1503
Phone
(650) 497-8000
NPI assigned
Jul 10, 2025
Last updated
Nov 4, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 4, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Audiologist 231H00000X AU4030 CA Primary

Addresses

Primary practice location

730 Welch Rd
Palo Alto, CA 94304-1503

Mailing address

725 Welch Rd
Palo Alto, CA 94304-1601
Phone (650) 497-8000

Other practice location 1

725 Welch Rd
Palo Alto, CA 94304-1601
Phone (650) 497-8000

Other practice location 2

2452 Watson Ct Ste 1500
Palo Alto, CA 94303-3216
Phone (650) 498-4327

Other practice location 3

14651 S Bascom Ave Ste 112
Los Gatos, CA 95032-2004
Phone (408) 385-9922

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250904002551 CA Practitioner - Qualified Audiologist 3779085261 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Qualified Audiologist
Education
Other, 2025
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

500 Pasteur Dr
FL 3
Palo Alto, CA 94304-1048

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
4030CAMDAddiction (Substance Use Disorder) Counselor
AU4030CAMDAudiologist

Practice roles

OrganizationSpecialtyStatusNew patients
LPCH Medical Group Div of Lucile CurrentSince Aug 20, 2025 Accepting new patients

Locations

725 Welch Rd
Palo Alto, CA 94304
Phone (650) 497-8979

Organizations & group practices 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1752105600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762214400000",
    "number": "1811888613",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "725 WELCH RD",
            "city": "PALO ALTO",
            "state": "CA",
            "postal_code": "943041601",
            "telephone_number": "650-497-8000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "730 WELCH RD",
            "city": "PALO ALTO",
            "state": "CA",
            "postal_code": "943041503",
            "telephone_number": "650-497-8000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "725 Welch Rd",
            "address_purpose": "LOCATION",
            "city": "Palo Alto",
            "state": "CA",
            "postal_code": "943041601",
            "country_code": "US",
            "telephone_number": "650-497-8000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2452 Watson Ct Ste 1500",
            "address_purpose": "LOCATION",
            "city": "Palo Alto",
            "state": "CA",
            "postal_code": "943033216",
            "country_code": "US",
            "telephone_number": "650-498-4327",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "14651 S Bascom Ave Ste 112",
            "address_purpose": "LOCATION",
            "city": "Los Gatos",
            "state": "CA",
            "postal_code": "950322004",
            "country_code": "US",
            "telephone_number": "408-385-9922",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "PHELPS",
        "first_name": "GRACE",
        "middle_name": "WILLIAMS",
        "credential": "AUD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-07-10",
        "last_updated": "2025-11-04",
        "certification_date": "2025-11-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "231H00000X",
            "taxonomy_group": "",
            "desc": "Audiologist",
            "state": "CA",
            "license": "AU4030",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Palo Alto, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 4, 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.