Introduction/Purpose: Effective provider communication during care transitions is a key component of patient care. Handoffs between paramedics and emergency department staff during trauma cases can be particularly chaotic. This study examined provider perceptions of a new communication tool used during transfer of trauma patient care at an urban Level I Trauma Center. Methods: The local RTAC led the implementation of a new communication process called a Trauma Team Activation Timeout (TTA Timeout). Prior to implementation of this project, over 800 EMS providers completed training on the protocol. Paramedics were trained to deliver their report in the MIST format (mechanism, injuries, symptoms, treatments). Immediately following transfer of care, the lead paramedic and the trauma team leader completed a 7-item survey assessing their experience. Responses to survey questions were compared between EMS providers and trauma team leaders using rank sum correlation. Results: Data were collected from 51 paramedics (17 EMS agencies) and 45 team leaders between 3/01/13-4/30/13. Paramedics believed the benefit of the TTA timeout was higher to the EMS provider (100% v. 77%, p<0.001), patient (100% v. 75%, p<0.001), and team leader (100% v. 80%, p<0.001) than the trauma team leader's evaluation. Paramedics perceived the TTA Timeout to result in higher effectiveness in the transfer of the patient than trauma team leaders (Spearman's rho = -0.2; p = 0.04). Conclusion: Paramedics report greater benefit of the TTA Timeout process than the in-hospital trauma team leaders. Inhospital personnel may require more education about the importance of the EMS report with the criticallyinjured patient.