Customer Service
Monday through Friday, 5:30 AM to 5:00 PM PST
Tel: (866) ONCOTYPE (866-662-6897)
Spanish: (877)-GHI-9876 (877-444-9876)
Domestic Fax: 866-GHI-0640 (866-444-0640)
International Phone: 001-650-569-2080
International Fax: 001-650-569-2081
Email: Customer Service
GAP Reimbursement Assistance
Email: GAP Reimbursement
Billing & Appeals
Tel: (866) ONCOTYPE (866-662-6897)
Fax: (650) 556-1073
Email: Customer Service