Organization Active NPI

Guardant Health Screening Corp

  • Clinical Medical Laboratory
  • Redwood City, CA
National Provider Identifier
1538857099
Registry record updated Aug 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Medical LaboratoryTaxonomy code 291U00000X
Legal business name
GUARDANT HEALTH SCREENING CORP
Practice address
101 Saginaw Dr
Redwood City, CA 94063-4717
Phone
(855) 722-7335
NPI assigned
Apr 24, 2023
Organization subpart
Yes
Parent organization
GUARDANT HEALTH, INC.As reported in NPPES

NPPES NPI Registry

Updated by the provider on Aug 13, 2026

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

Authorized official

Name
Casey McFarland
Title
Sr. Director Reimbursement
Phone
(855) 722-7335

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Medical Laboratory 291U00000X Primary

Addresses

Primary practice location

101 Saginaw Dr
Redwood City, CA 94063-4717

Mailing address

505 Penobscot Dr
Redwood City, CA 94063-4737
Phone (855) 698-8887

Other practice location 1

505 Penobscot Dr
Redwood City, CA 94063-4737
Phone (855) 698-8887

Other practice location 2

3100 Hanover St
Palo Alto, CA 94304-1119
Phone (855) 722-7335

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20240205000893 CA Part B Supplier - Independent Clinical Laboratory 2264875533 Practice locations: Redwood City, CA

Laboratory certificates & supplier records

Derived by NPIMap

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
05D2302129Guardant Health - Saginaw101 Saginaw Dr, Redwood City, CA 94063AccreditationOct 15, 2026
05D2324660Guardant Health-Palo Alto3100 Hanover St, Palo Alto, CA 94304AccreditationFeb 3, 2028

National Provider Directory

National Provider Directory
Part of
Guardant Health Inc

Locations

101 Saginaw Dr
Redwood City, CA 94063
Phone (855) 722-7335

505 Penobscot Dr
Redwood City, CA 94063
Phone (650) 446-7988

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 3

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1682294400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1786579200000",
    "number": "1538857099",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "505 PENOBSCOT DR",
            "city": "REDWOOD CITY",
            "state": "CA",
            "postal_code": "940634737",
            "telephone_number": "855-698-8887"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "101 SAGINAW DR",
            "city": "REDWOOD CITY",
            "state": "CA",
            "postal_code": "940634717",
            "telephone_number": "855-722-7335"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "505 Penobscot Dr",
            "address_purpose": "LOCATION",
            "city": "Redwood City",
            "state": "CA",
            "postal_code": "940634737",
            "country_code": "US",
            "telephone_number": "855-698-8887",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3100 Hanover St",
            "address_purpose": "LOCATION",
            "city": "Palo Alto",
            "state": "CA",
            "postal_code": "943041119",
            "country_code": "US",
            "telephone_number": "855-722-7335",
            "fax_number": "888-483-2291",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "GUARDANT HEALTH SCREENING CORP",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "GUARDANT HEALTH, INC.",
        "enumeration_date": "2023-04-24",
        "last_updated": "2026-08-13",
        "certification_date": "2026-08-13",
        "status": "A",
        "authorized_official_last_name": "MCFARLAND",
        "authorized_official_first_name": "CASEY",
        "authorized_official_title_or_position": "SR. DIRECTOR REIMBURSEMENT",
        "authorized_official_telephone_number": "855-722-7335"
    },
    "taxonomies": [
        {
            "code": "291U00000X",
            "taxonomy_group": "",
            "desc": "Clinical Medical Laboratory",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Redwood City, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 13, 2026; 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.