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. Dr. Chanan-Khan is a hematologist and serves as Chair of Hematology/Oncology at Mayo Clinic’s Florida campus and is involved in the CAR-T Cell Therapy Program. His interests include chronic lymphocytic leukemia, multiple myeloma and Waldenstrom macroglobulinemia. U.S. News & World Report consistently ranks Mayo Clinic among the top hospitals for cancer in the nation.