This article provides an overview of the Japanese healthcare system, its ranking in global healthcare systems, quality of care, accessibility and affordability, and challenges facing the system. Japan's healthcare system is based on a universal health insurance system funded by taxes and premiums paid by employers and employees. According to the World Health Organization’s (WHO) Global Health Observatory data repository, Japan ranks 4th out of 191 countries in terms of overall performance on their “Health Systems Performance Index”. The quality of care provided by Japanese hospitals is generally considered to be very high due to a highly regulated system. Accessibility to healthcare services is generally considered good across Japan due to its comprehensive network of public hospitals which are located throughout the country as well as private clinics. Challenges facing the Japanese healthcare system include rising costs due to an aging population; lack of access for rural populations; difficulty attracting foreign doctors; increasing demand for new treatments; lack of technological advancements; limited availability for certain specialized treatments such as cancer treatment