Tachi Yamada

Bill and Melinda Gates Foundation

Dr. Tachi Yamada is leaving his position in June as head of the Gates Foundation’s global health program.

That’s big news primarily because the Gates’ global health program is so big, the largest program at the world’s largest philanthropy, accounting for more than half of the $3 billion the Gates Foundation spends every year trying to make the world a better, healthier and more equitable place.