DialClerk Directory

Labs and imaging

Guardant Health

Phone, published email, fax, addresses and the next step for your office.

4 contact routesNo directory research calls placed

lab client services

General laboratory contact

Official page read
Phone855-698-8887Fax

888-974-4258

Published hours

Not published in this record

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Physical address
505 Penobscot Drive Redwood City, CA 94063

Published laboratory location — obtain test-specific shipping instructions before sending specimens

View source ↗ · Source checked 2026-10-22

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Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

GuardantAccess oncology billing and support

Official page read
Phone

No phone listed for this route

Published email

ClientServices@GuardantHealth.com

Oncology insurance, billing and financial-assistance support

Published hours

Not published in this record

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Independent of the Shield screening patient route. Contact the team to confirm the exact oncology test and assistance terms.

View source ↗ · Source checked 2026-10-22

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patient assistance

Shield patient support and GuardantAccess

Official page read
Phone855-722-7335Published email

ScreeningPatient@GuardantHealth.com

Shield screening patient support

Published hours

Not published in this record

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Menu guidance in the source record

Extension 1, then 2.

Menus can change. No live call verification is claimed.

Program eligibility, current funding, insurance restrictions and exact formulation must be confirmed directly. This contact does not establish approval or coverage.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

lab client services

Shield healthcare-professional screening support

Official page read
Phone855-722-7335Published hours

Not published in this record

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

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