Guardant360 is an in-network provider with the following health plans

Blue Cross and Blue Shield of Illinois
Blue Cross and Blue Shield of Kansas
Blue Cross and Blue Shield of Massachusetts
Blue Cross and Blue Shield of North Carolina
Blue Cross and Blue Shield of South Carolina
Blue Shield of California
Cigna
CareFirst BCBS Maryland
Priority Health
SelectHealth
Sharp Rees Stealy
Scripps

For more information, contact Guardant Health Client Services