Learning healthcare systems (LHS) describe research-partnered care networks that analyze sources of patient data (e.g., electronic health records, medical billing) and use those insights to continuously improve their health services. LHS' are important contributors to progress in traumatic brain injury (TBI), where much more remains to be understood about which interventions are the most effective, and for whom. Fragmented and siloed LHS data undercuts the system's ability to learn and improve. This one-day public workshop discussed a vision for how data integration in LHS' for TBI can accelerate research and patient care.