About Dr. Grewal Jai Grewal, M.D. is a board certified neuro-oncologist who completed his neuro-oncology fellowship at the MD Anderson Cancer Center in Houston, Texas. Following medical school, he completed an internal medicine internship at Griffin Hospital in Connecticut, which is affiliated with Yale University. He then finished a neurology residency at the University of Texas, Southwestern. His clinical practice includes management of patients with primary and metastatic tumors of the brain and spine. These include glioblastoma, astrocytoma, oliodendroglioma, ependymoma, meningioma, lymphoma, as well as other diagnoses.