Marco is a Medical Oncologist specializing in the treatment of hematologic cancers, including leukemia, lymphoma, myelodysplastic syndrome and myelofibrosis, as well as cancer combined with human immunodeficiency virus (HIV). He has unique expertise in bone marrow transplantation, geriatric oncology and palliative medicine. Dr. Ruiz performs cancer research and clinical trials, with a focus on perfecting cancer treatments and improving patient outcomes.