DENVER (CBS4) – He’s a man who just keeps on giving.

Bill Burnham made his 520th donation at the Bonfils Blood Center on Tuesday. He’s now donated 65 gallons of blood and platelets.

Burnham is just the fourth person to reach the milestone in Bonfils history.

His blood donations have helped as many as 1,500 people.

LINK: Bonfils Blood Center