Riverview Hospital Foundation will host its Red Ball on Saturday at Lucas Estate, 1142 W. 106th St., Carmel. The ball, with presenting sponsor BMO Harris Bank, is a special celebration of the Riverview Hospital cardiovascular program. A welcome reception will begin at 5:45 p.m. with dinner at 7 p.m. Cost is $150 per person and $2,000 for a corporate table. For more information, contact Trish Oman at 776-7317 or [email protected].