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GUARDANT HEALTH, INC.
NPI 1184045619
Clinical Medical Laboratory in Redwood City, CA

Active since December 31, 2013CLIA Certified · 4 labs
505 PENOBSCOT DR, REDWOOD CITY, CA 94063(650) 290-7575 Get Directions Write a Review

NPPES record last updated: October 15, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Sep 23, 2022, Jun 24, 2016 (2 updates tracked since 2016).

About Guardant Health, Inc. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GUARDANT HEALTH, INC. (NPI 1184045619) is a healthcare organization registered as a clinical medical laboratory in Redwood City, California and active in the NPI registry since December 2013. The organization holds 4 active CLIA laboratory certificates, maintains a secondary practice location in Long Island City, and lists Mike Bell, Cfo, as its authorized official.

NPPES Registry Identity

NPI1184045619
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameGUARDANT HEALTH, INC.
Location Address505 PENOBSCOT DRRedwood City, CA 94063-4737
Mailing Address505 Penobscot DrRedwood City, CA 94063-4737
Phone(650) 290-7575
Organization SubpartNo
Authorized OfficialMike BellCfo · (855) 698-8887
Enumeration DateDecember 31, 2013
Last NPPES UpdateOctober 15, 20252 updates tracked since enumeration
NPPES CertifiedOctober 15, 2025
✔ NPI 1184045619 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical Medical LaboratoryLaboratories
Taxonomy Code291U00000X
License✔ Licensed in CA · 05D2070300
Definition
(1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology.
505 PENOBSCOT DR, Redwood City, CA 94063
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Secondary Practice Location 1

Location 13002 48th Ave Ste 180Long Island City, NY 11101-3432 · Phone (855) 698-8887

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Buckeye Health Plan, Ambetter from Home State Health and more.Insurance ›

CLIA Laboratory Certificates CMS CLIA 4

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Accreditation 05D2070300

Guardant Health Inc · Redwood City, CA
Active · expires Aug 27, 2026
CLIA Number05D2070300
Laboratory TypeIndependent
Certificate Effective DateAugust 28, 2024
Certificate Expiration DateAugust 27, 2026
Laboratory DirectorDr. Martina Lefterova
Laboratory Phone(855) 698-8887
Laboratory LocationGuardant Health Inc505 Penobscot Dr, Redwood City, CA 94063
CLIA data matches this NPI record on: Address Name Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Certificate of Accreditation 05D2324660

Guardant Health-Palo Alto · Palo Alto, CA
Active · expires Feb 3, 2028
CLIA Number05D2324660
Laboratory TypeIndependent
Certificate Effective DateFebruary 4, 2026
Certificate Expiration DateFebruary 3, 2028
Laboratory DirectorDr. Yanyan Hong
Laboratory Phone(855) 698-8887
Laboratory LocationGuardant Health-Palo Alto3100 Hanover St, Palo Alto, CA 94304
CLIA data matches this NPI record on: Name Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Certificate of Compliance 33D2322874

Guardant Health - Long Island City · Long Island City, NY
Active · expires Mar 26, 2027
CLIA Number33D2322874
Laboratory TypeIndependent
Certificate Effective DateApril 29, 2025
Certificate Expiration DateMarch 26, 2027
Laboratory DirectorDr. Florence Loo
Laboratory Phone(855) 698-8887
Laboratory LocationGuardant Health - Long Island City30-02 48th Ave, Suite 180, Long Island City, NY 11101
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

Certificate of Accreditation 05D2302129

Guardant Health - Saginaw · Redwood City, CA
Active · expires Oct 15, 2026
CLIA Number05D2302129
Laboratory TypeIndependent
Certificate Effective DateOctober 16, 2024
Certificate Expiration DateOctober 15, 2026
Laboratory DirectorDr. Martina Lefterova
Laboratory Phone(855) 698-8887
Laboratory LocationGuardant Health - Saginaw101 Saginaw Dr, Redwood City, CA 94063
CLIA data matches this NPI record on: Name Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Gene analysis of 55-74 genes associated with solid organ cancer in cell-free circulating dna, targeted genomic sequence analysis panel 0242U
This procedure examines 55-74 specific genes in DNA that's freely circulating in your blood. These genes are often related to solid organ cancers. By analyzing these genes, it can provide insights into your risk of developing these cancers.
20,206 services19,444 patients
Targeted genomic sequence analysis of 83 or more genes in cell free circulating dna for detection of abnormalities associated with solid organ cancers 0326U
"Targeted gene sequencing analysis panel 83+" is a scientific technique used to examine specific genes in your DNA. It helps identify any genetic variations that may lead to health issues. This test provides valuable information to your healthcare team for personalized treatment plans.
19,695 services17,856 patients
Targeted genomic sequence analysis of 84 or more genes for detection of abnormalities associated with cancer of body organ 0334U
This procedure, abbreviated as "Onc sld orgn tgsa dna 84/+", involves the use of targeted agents in oncology for solid organ cancers. These agents are designed to specifically target cancer cells in the body, reducing harm to healthy cells. The "84/+" refers to a specific protocol or treatment regimen. It's a modern approach to cancer treatment.
2,759 services2,736 patients
Microscopic genetic analysis of tumor, manual 88360
Microscopic genetic analysis of a tumor involves examining your tumor's genes under a microscope. This helps identify specific genetic changes in the tumor cells. This information can aid in diagnosing, predicting disease progression, and determining the most effective treatment options.
1,962 services1,951 patients
Molecular pathology procedure 81479
A molecular pathology procedure is a specialized lab test that analyzes your genes at a molecular level. It helps identify genetic variations or changes that may affect your health. This information can assist in diagnosing, monitoring, and deciding treatment for certain conditions.
1,075 services1,062 patients
Microscopic genetic analysis of tumor, manual 88360
Microscopic genetic analysis of a tumor involves examining your tumor's genes under a microscope. This helps identify specific genetic changes in the tumor cells. This information can aid in diagnosing, predicting disease progression, and determining the most effective treatment options.
314 services314 patients

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

TERESA BAUTISTA HURTADO CLS/MLT
Clinical Medical Laboratory
505 PENOBSCOT DR
REDWOOD CITY, CA 94063
San Mateo County (855) 698-8887
LAUREN LAWRENCE
Pathology (Molecular Genetic Pathology)
505 PENOBSCOT DR
REDWOOD CITY, CA 94063
San Mateo County (855) 698-8887

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Guardant Health, Inc.'s NPI number?

The NPI number for Guardant Health, Inc. is 1184045619. It was assigned to this organization in the NPPES registry on December 31, 2013.

Where is Guardant Health, Inc. located?

Guardant Health, Inc. is located at 505 Penobscot Dr, Redwood City, CA 94063. The listed phone number is (650) 290-7575.

What is Guardant Health, Inc.'s specialty?

The primary specialty registered for this NPI is Clinical Medical Laboratory with taxonomy code 291U00000X.

Does Guardant Health, Inc. hold CLIA laboratory certificates?

Yes. 4 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

What insurance does Guardant Health, Inc. accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Buckeye Health Plan, Ambetter from Home State Health and Ambetter from Meridian and 22 other insurers list Guardant Health, Inc. as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Guardant Health, Inc. was last updated on October 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.