The medical profession is observing a rising number of calls to action considering the threat that climate change poses to global human health. Theory-led bioethical analyses of the scope and weight of physicians’ normative duty towards climate protection and its conflict with individual patient care are currently scarce. This article offers an analysis of the normative issues at stake by using Korsgaard’s neo-Kantian moral account of practical identities. We begin by showing the case of physicians’ duty to climate protection, before we succinctly introduce Korsgaard’s account. We subs...