Dr. James Wilson is a fictional character from the popular television series House, M.D.. He serves as the head of oncology at Princeton-Plainsboro Teaching Hospital and is known for his compassionate nature and strong moral compass. As a close friend of the show's protagonist, Dr. Gregory House, Wilson often provides emotional support and guidance. In the series, Dr. Wilson is portrayed by actor Robert Sean Leonard. His character frequently grapples with ethical dilemmas in medicine and personal relationships, showcasing the complexities of being a doctor. Wilson's character adds depth to the show's exploration of friendship, loyalty, and the challenges faced in the medical field.