Fountain Valley Regional Hospital & Medical Center has appointed Edward Littlejohn its new chief operating officer.

Littlejohn succeeds Paul Czajka, who joined USC Verdugo Hills Hospital late last year.

He previously served as chief operating officer of Kaiser Permanente in San Diego and John Randolph Medical Center in Virginia.

Fountain Valley Regional, a 400-bed acute care facility, is part of Tenet Healthcare Corp. and among the largest hospitals in Orange County.

It ranked No. 9 on the latest Business Journal list of the largest hospitals here, published in February. It had $344 million in revenue for the 12 months through September and about 1,600 employees.

Fountain Valley Regional also made the list of the “best hospitals” in California compiled by U.S. News & World Report, ranking No. 42 in the state and No. 22 in the Los Angeles metro area.

Other Orange County hospitals that made the U.S. News list include:

University of California-Irvine Medical Center in Orange, which ranked No. 9 in California and No. 4 in the L.A. metro area;

Hoag Memorial Hospital Presbyterian in Newport Beach and St. Joseph Hospital in Orange, which tied at No. 20 in California and No. 9 in the metro area;

Saddleback Memorial Medical Center in Laguna Hills, which ranked No. 24 in California and No. 12 in the L.A. region;

Mission Hospital in Mission Viejo, ranked No. 28 in California and No. 15 in the metro area.