This chapter examines three community-based brain health interventions to demonstrate the transformative potential of evaluation-informed programming in addressing complex care needs. Through case studies of March of Dimes Canada’s virtual stroke support program, JIAS Toronto’s mental health initiatives for refugees, and Karis Disability Services’ post-secondary employment pathway, the analysis reveals how organizations leveraged evaluation to enhance accessibility, cultural relevance, and program effectiveness. Each initiative employed iterative evaluation strategies—including mixed-methods approaches, longitudinal tracking, and participatory needs assessments—to adapt interventions to participants’ lived experiences while building organizational capacity. The evaluations uncovered systemic barriers including language access challenges in refugee mental health services and persistent employment discrimination against people with disabilities. By translating findings into practice, organizations developed culturally responsive programming, expanded virtual service delivery models, and forged cross-sector partnerships with academic institutions. These case studies collectively demonstrate how community-generated evidence fills critical gaps in brain health care by capturing contextual factors often overlooked in clinical research, while advancing equitable access through tailored solutions. The chapter argues for recognizing community organizations as essential partners in integrated care systems, capable of producing actionable insights that complement clinical approaches to brain health.