Meet Our Physicians Medical Oncologists Donald Quick, M.D. Medical Director, Oncology Service Line David Close, M.D. Rodolfo Martinez, M.D. Jehanzeb Riaz, M.D. Ibrahim Shalaby, M.D. Isaac Tafur, M.D. Kiran Yalamanchili, M.D. Radiation Oncologists Gabriel Axelrud, M.D. Medical Director, Radiation Oncology David Jenkins, M.D. Carlos Torres, M.D.