I’m a physician, author, and advocate with over four decades of experience in pediatric oncology, academic medicine, and nonprofit leadership. For the majority of my career, I served at Columbia University Medical Center, where I led one of the nation’s top pediatric hematology-oncology programs and mentored a generation of physician-scientists. I’m proud to have founded the Hope & Heroes Children’s Cancer Fund, which has raised over \$100 million to support children and families facing cancer. Today, I remain active as a writer and fundraiser, committed to advancing care, research, and hope for the next generation.