Tanenbaum's involvement in community associations includes the following: vice chair of Sinai Health System; co-chair of the Research Committee for the Lunenfeld-Tanenbaum Research Institute; vice-chair, Brain Canada; member, University Council, Cornell University; Honorary Board Member, Baycrest Centre for Geriatric Care; member of the advisory board, Montreal Neurological Institute; co-founder and board member, Tanenbaum Open Science Institute at MNI; member, Dean's advisory council, Schulich School of Business, York University; founding board member, executive committee member and member of the Global Leadership Council of Right to Play; founding member, Centre for Israel and Jewish Affairs; and co-chair, Tomorrow Campaign (UJA).