Even in this time of uncertainty, Mayo Clinic is a place for hope and healing — and we're committed to delivering the care you need. With options for face-to-face, virtual visits or phone appointments in adherence with federal and state executive orders and guidance. Mayo Clinic is the best hospital overall according to U.S. News & World Report. Mayo Clinic treats more than 30,000 people with blood diseases and 150,000 people with cancer, providing the best possible blood cancer care. Mayo Clinic hematologists work in collaboration with teams of top experts from virtually every medical and surgical specialty for the care of adults and children with blood diseases, including various cancers of the blood and bone marrow.