Dr. Alfredo Quiñones-Hinojosa is an Associate Professor of Neurosurgery and Oncology, Neuroscience and Cellular and Molecular Medicine at Johns Hopkins in Baltimore, Maryland. He serves as the director of the Brain Tumor Surgery Program at the Johns Hopkins Bayview Campus. Dr. Quiñones focuses on the surgical treatment of primary and metastatic brain tumors, with an emphasis on motor and speech mapping during surgery. He is an expert in treating intradural spinal tumors as well as brainstem and eloquent brain tumors in adults with the use of neurophysiological monitoring during surgery. He further specializes in the treatment of patients with pituitary tumors using a transphenoidal endonasal approach with surgical navigation and/or endoscopic techniques. He has a strong interest in treating patients with skull base tumors and the use of radiosurgery as an adjunct to the treatment of these lesions.