Norman Spack, MD, is the director and cofounder of the Gender Management clinic at Boston Children s Hospital, the first US clinic to treat transgender children. Dr. Spack has helped pioneer the use of hormone blockers to delay puberty and hormone replacement therapy in teens. He has received national attention for his 2014 TEDx talk How I help transgender teens become who they want to be (over 1 million views) and was featured in Diane Sawyer s landmark interview with Bruce Jenner. Dr. Spack is Associate Professor of pediatrics at Harvard Medical School.