Genomic Health, Inc.

Primary specialty

Clinical Medical LaboratoryTaxonomy code 291U00000X

Legal business name

GENOMIC HEALTH, INC.

Practice address

301 Penobscot Drive
Billing and Reimbursement Ops.
Redwood City, CA 94063-4700

Phone

(866) 662-6897

Fax

(866) 383-1932

NPI assigned

Nov 28, 2006

Last updated

Jul 30, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Stephen Tlachac

Title

Divisional VP and Controller

Phone

(608) 284-5700

Specialties & licenses 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in CA, AZ, WI3 enrollments

Enrollment records 3

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

CLIA laboratory certificates

Tax ID family

Genomic Health Inc2 organizations share this tax ID, including this one

Other organizations with this tax ID 1

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

• Genomic Health Inc.

  • Clinical Medical Laboratory
  • Phoenix, AZ
  • NPI 1275913642
  NPD tax ID

Member organizations 5

Organizations listed as members of this organization in the National Provider Directory.

• Epic Sciences, Inc.

  • Clinical Medical Laboratory
  • San Diego, CA
  • NPI 1790139061

  Member Of

  NPD member
• Invitae Corporation

  • Clinical Medical Laboratory
  • San Francisco, CA
  • NPI 1316206220

  Member Of

  NPD member
• Mdxhealth, Inc.

  • Clinical Medical Laboratory
  • Irvine, CA
  • NPI 1720359698

  Member Of

  NPD member
• Delta Laboratories LLC

  dba MDxHealth Central

  • Clinical Medical Laboratory
  • Plano, TX
  • NPI 1851966105

  Member Of

  NPD member
• Exosome Diagnostics, Inc.

  • Clinical Medical Laboratory
  • Waltham, MA
  • NPI 1538543731

  Member Of

  NPD member

Locations

Practitioners 1

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.

• Steven Shak, M.D

  • Clinical Medical Laboratory
  • Redwood City, CA
  • NPI 1205239704
  NPD (past)

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

{
    "created_epoch": "1164672000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1785369600000",
    "number": "1215003603",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 735265",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606735265",
            "telephone_number": "866-662-6897",
            "fax_number": "866-383-1932"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "301 PENOBSCOT DRIVE",
            "address_2": "BILLING AND REIMBURSEMENT OPS.",
            "city": "REDWOOD CITY",
            "state": "CA",
            "postal_code": "940634700",
            "telephone_number": "866-662-6897",
            "fax_number": "866-383-1932"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "445 N 5th St Ste 100300",
            "address_purpose": "LOCATION",
            "city": "Phoenix",
            "state": "AZ",
            "postal_code": "850042157",
            "country_code": "US",
            "telephone_number": "866-662-6897",
            "fax_number": "866-383-1932",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "650 Forward Dr.",
            "address_purpose": "LOCATION",
            "city": "Madison",
            "state": "WI",
            "postal_code": "537112441",
            "country_code": "US",
            "telephone_number": "608-284-5700",
            "fax_number": "608-535-8715",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "GENOMIC HEALTH, INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-11-28",
        "last_updated": "2026-07-30",
        "certification_date": "2026-07-30",
        "status": "A",
        "authorized_official_last_name": "TLACHAC",
        "authorized_official_first_name": "STEPHEN",
        "authorized_official_title_or_position": "DIVISIONAL VP AND CONTROLLER",
        "authorized_official_telephone_number": "608-284-5700"
    },
    "taxonomies": [
        {
            "code": "291U00000X",
            "taxonomy_group": "",
            "desc": "Clinical Medical Laboratory",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "LAB18272F",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Zacharay Gavriel, PSY.D.
• Ibironke Mutiat Gbaja-Biamila, NP
• Daniel Gbundema
• Keith K Gee Jr., D.D.S
• Halle Gelman
• Gentlebirth PR LLC
• Tien Gerrodette
• Kristin Boger Gershfield, MD
• Dorina Gheorghevici, MD
• Bahiyeh Ghiassi-Shirazy, PHARMACIST

• Clinical Medical Laboratory in Redwood City, CA
• Providers in Redwood City, CA by specialty
• Clinical Medical Laboratory in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 30, 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.