Everyone in Zachariah Reitano’s immediate family has dealt with a life-threatening illness, ranging from congenital heart disease to cancer. But they also had access to a physician 24/7: his dad. “Whenever we had a question, we'd go to him and he would handle it from beginning to end,” says Reitano, cofounder and CEO of New York-based digital health startup Ro and an alumnus of the 2020 Forbes 30 Under 30 Healthcare list. “Part of me wanted to place my dad in everyone’s home.”