Dr. John DenBoer measures the impact of his community engagement efforts primarily through participant feedback and testimonials from individuals involved in the SMART Memory Program. Participants often share their experiences, highlighting the personalized approach and supportive environment that have positively influenced their cognitive health journeys. Additionally, Dr. DenBoer evaluates the effectiveness of his programs through ongoing assessments and research studies, which track improvements in cognitive function and overall well-being among participants. By combining qualitative feedback with quantitative data, he can assess the program's success in raising awareness about cognitive health and its effectiveness in preventing dementia, thereby refining his strategies for greater community impact.