After Richard Webber steps down as Chief of Surgery at Seattle Grace Hospital (later Grey Sloan Memorial Hospital), Miranda Bailey takes on the role.
This happens in Season 10, Episode 1, "The Time Has Come," when Webber decides to retire and Bailey is chosen as his successor.
While Webber served as Chief of Surgery for many years, Bailey brings a new perspective and leadership style to the role. As a highly skilled surgeon and experienced leader, she faces challenges and navigates the complexities of managing the department, leading to significant changes and growth for the hospital.
