This Request for Proposal (RFP) is dual-purposed and is issued to 1) provide six Care Transition and Support Teams (CTSTs) based on the critical time intervention (CTI) model, and 2) provide two high-touch intensive outreach, engagement and care coordination CTI teams for the street and subway-dwelling homeless (subway-dwelling men and women identified by OMH and the New York State Office of Temporary and Disability Assistance (OTDA) as well as long-term homeless with behavioral health and medical conditions).