eHealth technology is being developed at a rapid rate in line with advances in Information and Communication Technology (ICT). As eHealth technology increases, ensuring equitable accessibility and usability for all end-users is becoming a significant challenge. Considering human factors in the design phase of an application will help ensure usability and accessibility gaps are addressed. We conducted a survey with a broad range of users to investigate the relationship between different human factors and design elements that address these human factors. From the survey results, we developed a high-fidelity design prototype which we validated with a usability study to enhance the usability and accessibility for diverse end-users.