Save on Your Medical Costs at Many Local Koala® Center for Sleep and TMJ Disorders. Call Now. Spend Less and Feel Better with Koala® Center for Sleep and TMJ Disorders Promotions. Select Any Location Below. Peoria, IL Kansas City, MO Mishawaka, IN Bloomington, IL Columbia, MO Wausau, WI Lafayette, IN Brewster, NY El Paso, TX Locations Across the US to Serve You.