Little Company of Mary operates two full-service, 24-hour Emergency Departments staffed by board-certified emergency medicine physicians, as well as specially trained and certified emergency nurses.

Little Company of Mary Hospital Emergency Department provides a full range of emergency services. It is also designated as a paramedic base station and an Emergency Department Approved for Pediatrics (EDAP) by the Los Angeles County Health Department.

San Pedro Peninsula Hospital Emergency Department is a Level II Emergency Department, providing full emergency care services. The department is a designated Emergency Department Approved for Pediatrics (EDAP) by the Los Angeles County Department of Health Services.