Contact Us - Sequoia Hospital Employees Federal Credit Union. CONTACT US! We welcome your questions, comments, and suggestions! Sequoia Hospital Employees Credit Union - Redwood City, California. Online Services. advantage of our services. Online Banking - Sign up Today! Sep 30, 2012. Sequoia Hospital Employees Federal Credit Union in Redwood City, California has 1516 members and assets of $13659017. Find their routing.