Wednesday morning, Mayor Antonio Villaraigosa officially nominated interim Chief Brian Cummings.
Cummings is a 31-year-old veteran and formerly served as chief of staff, overseeing the planning section, community liaison office and leading the chief's staff meetings.
He was one of three finalists, all from the department.
"Together with the fine men and women, sworn civilian and volunteers of the Los Angeles Fire Department, we will continue making Los Angeles a safe place to live, to work and to play," said Cummings.
Cummings, 52, will take the reins of a department struggling to do more with about 15 percent fewer resources while responding to an estimated 1,000 calls per day.
The city council must still ratify the mayor's nomination. If approved, Cummings will succeed Millage Peaks, whose retirement became effective on July 10.
City News Service contributed to this story.