Mercy Sister Dorothy Burns, 84, died April 27.

Born in Chicago, she attended St. Tarcissus School and St. Patrick Academy, Des Plaines, graduating in 1951. She entered the Sisters of Mercy in 1954 in Des Plaines. 

While working toward her bachelor’s degree in education at Saint Xavier University, she taught at Queen of Martyrs, Evergreen Park, and Our Lady of Mount Carmel.

After earning a master’s degree in business in 1966, she quickly worked her way up in the health care world, filling a variety of roles in Mercy institutions in Aurora, Illinois, before serving for four years as vice president at Mercy Hospital and Medical Center in Chicago. 

She returned to Mercy Medical Center in Aurora as chief operating officer in 1988 and eventually became president and chief executive officer.