The term 'Father of Medicine' is often used to refer to Hippocrates, an ancient Greek physician who lived in the 5th century BC. He is widely considered to be the most outstanding figure in the history of medicine and is credited with laying the foundations of modern medicine. Hippocrates is known for his ethical approach to medicine, which focused on the importance of observation and diagnosis. He also wrote extensively on medical topics, including anatomy, physiology, and pathology. His work has had a lasting influence on the practice of medicine and is still studied today.