Dr. Grannan is a neurosurgeon at the University of Washington Medical Center and at the Epilepsy Center at Harborview Medical Center.  He received dual Bachelor of Science degrees in Physics and Biology from the Massachusetts Institute of Technology (MIT).  He received his Doctor of Medicine degree from Harvard Medical School and completed neurosurgery residency training at the Massachusetts General Hospital (MGH) and Harvard Medical School.  During residency, he was a recipient of the Neurosurgery Research and Education Foundation and NIH T32 research grants, which supported his postdoctoral research fellowship in the Ziv Williams Lab at MGH.  He moved to Seattle following residency training to complete a fellowship in Epilepsy, Movement Disorders, and Brain Tumor mapping at the University of Washington.  He then stayed on as Assistant Professor in the University of Washington Department of Neurological Surgery.