Hollis Cancer Center. Phone: 863.603.6565 Location: North Campus /Hollis Cancer Center The Lakeland Regional Health Hollis Cancer Center opened in 2003. As Central Florida's premier center for healing, hope and discovery, our state-of-the-art campus at 3525 Lakeland Hills Blvd offers all the services necessary for patients to conquer cancer and is designed expressly with those in our care in ...Hollis Cancer Center Services and Physicians‧Visiting Hours and Policies‧Hollis Cancer Center Facility.