The South Bay Children's Health Center was established in 1947 on the premises of the Redondo Union High School campus as a dental clinic. It's formation was sponsored by the South Bay Council PTA and school district officials to meet a critical need for dental treatment for children from low and medium income families. In late 1947 a diagnostic hearing clinic was added, followed by a diagnostic vision clinic in 1952 and a special services clinic in 1954. In 1953, a collaboration with the Sandpipers, a philanthropic organization began with the South Bay Children’s Health Center as volunteers in our school based Dental Diagnostic Screening Program which serves several local South Bay Community schools. This program generally screens an average of 12,000 children per school year. The South Bay Children’s Health Center constructed it's main facility at 410 S. Camino Real in Redondo Beach in 1956 following a successful capital fund drive and donation of a building site by the City of Redondo Beach.

In response to a feasibility study and in affiliation with the Los Angeles Child Guidance Clinic and USC School of Medicine, a child guidance clinic was established in 1967 to provide psychotherapy for children and their families with emotional or behavioral problems. A medically supervised program staffed by three disciplines composed of psychiatrists, licensed clinical psychologists and licensed clinical social workers was implemented. This team program concept continues as the treatment mode today. A successful capital fund drive coupled with a HUD community Development Act grant from the City of Torrance was undertaken and completed in 1977, and a facility specifically for child guidance treatment was acquired in October of 1977 at 1617 Cravens Avenue in Torrance.