His numerous areas of clinical expertise encompass both pediatric and adult congenital neurological surgery, endoscopic brain surgery, brain tumor surgery and neuro-trauma care. Dr. Ellenbogen has three recent extramurally funded research efforts. He is the PI on an NIH/NINDS funded (R-25) Translational Neuroscience and Neurological Surgery, an NCI-funded molecular imaging lab study targeting brain tumors using immunofluorescent nanoparticles, and a Paul Allen Brain Science Foundation funded project on mapping of the transcriptome in patients who have suffered a TBI. He was the volunteer Co-Director of the NFL Head, Neck and Spine Medical Committee from 2010 to 2017. In that capacity, he advocated for health- and safety-related rules changes, sideline concussion diagnosis, management protocols, over 100 million dollars of research funding and youth concussion protection laws in all 50 states.