This chapter traces the evolution of physicians as institutional leaders and the rise of anesthesiology as a specialty that embodies both clinical mastery and organizational leadership. Beginning with the historical transition from hospitals as charitable institutions to complex, physician-led systems, it examines how medical authority and administrative responsibility became intertwined. Against this backdrop, anesthesiology’s transformation—from a technical service to an academic and economic cornerstone—is explored through its milestones: early specialization, the establishment of formal training and certification, and the expansion into perioperative medicine, pain management, and critical care. The discussion then shifts to the modern economic value of anesthesiologists within healthcare systems. Anesthesiologists directly influence the financial and operational performance of hospitals through operating room efficiency, cost control, documentation accuracy, and value-based outcomes. They improve throughput, mitigate cancelations, and enhance patient safety while contributing to fiscal sustainability. Finally, the chapter positions anesthesiologists as the essential perioperative physicians—leaders who unify clinical, operational, and financial priorities to sustain high-quality, economically viable surgical services in a rapidly evolving healthcare environment.