Who is allowed to practice medicine? This question recurred in different forms throughout Japan's modern era, reflecting fundamental changes in how people provided and received medical care. This article explores one key issue that underlined this question: a persistent doctor shortage, whose causes and form changed over time—from the late wartime era, through the immediate postwar rehabilitation years, to the era of rapid economic growth. Rather than focusing on issues of policy, the article examines personal histories, revealing how shortages led to various doctor substitutes, some legitimate and some not, in a process whereby doctor care came to be seen as a basic right.