What services does CATS provide? CATS staff are credentialed to provide both mental health and substance abuse treatment to clients. Individual and group therapy is available for substance abuse clients. CMHA CEI Emergency Services staff work closely with CATS and ICJ staff, to assess severe mental health issues and suicide risk within the jail population. CATS has a case manager and a peer recovery coach to assist clients with necessary referrals and follow-up once clients are released from jail.