Services are collaborative and recovery-oriented, and treatment includes: psychiatric assessment, medication management, individual therapy, substance abuse treatment, co-occurring disorders treatment, supportive housing, resource linkage, advocacy, family psycho-education and therapy, supportive employment and education development, legal assistance, community integration services, peer support and group counseling. Catalyst provides full service partnership services to Transitional Age Youth (TAY) ages 16 to 25 with a serious mental illness, and who are homeless or at risk of becoming homeless in San Diego County.