Lamar Odom has just invested in three drug treatment centers in California ... with the hopes of helping people turn around their lives -- just as he did with his own several years ago.
TMZ Sports has learned ... the former L.A. Lakers star teamed up with Christian hip-hop artist Dontae Ralston and former Hall of Fame skateboarder Dennis Martinez to acquire the facilities in San Diego, El Cajon and Lemon Grove.
A rep for Odom tells us the venues consist of a women's residential treatment home and two men's detox and residential treatment homes.