Equitable access to healthcare is a social challenge in many countries and regions. Inadequate access to healthcare can lead to delays in the diagnosis and treatment of diseases, or the inability to receive regular check-ups, thereby contributing to disparities in individual health outcomes. Access to healthcare is influenced by spatial and non-spatial factors. Spatial factors include whether medical facilities exist within one’s living area, the availability of transportation to these facilities, and the adequacy of medical personnel and equipment. Non-spatial factors encompass aspects such as insurance systems, income, cultural influences, health literacy, and trust in medical services.

To date, I have focused on spatial factors, combining medical data with geographical information to analyze regional disparities in access to emergency medical services and home nursing care, evaluate the impacts of these disparities, and propose solutions to mitigate them. Furthermore, I have been involved in research evaluating the cost-effectiveness of health technologies. Properly assessing the cost-effectiveness of new technologies is crucial for assigning appropriate value to these innovations and addressing key issues in ensuring equitable access to healthcare through health insurance systems.