In her thought-provoking book, Sophie Bellier delves into the often-unquestioned role of medical professionals, posing the crucial question: 'What is the use of a doctor?' Bellier meticulously examines the multifaceted contributions of physicians, from diagnosis and treatment to patient care and emotional support. She explores how doctors navigate complex ethical dilemmas, the challenges they face in an evolving healthcare landscape, and their indispensable role in public health. This compelling work provides a fresh perspective on the profound impact doctors have on individual lives and society at large, encouraging readers to appreciate their dedication and expertise beyond the sterile confines of a clinic.