Spoiler Alert. There are a lot of Characters in the Drama Doctor John more so, because it is about Doctors and Patients. In this article, The Characters to be discussed few of them. This include; Cha Yo-Han played by Ji Sung, Lee Se- Young as Kang Shi- Young, Lee Kyu-Hyung as Prosecutor Son seok-Ki, Hwang Hee as Dr. Lee Yoo-Joon , Jung Min-A as Kang Mi-Rae, and Shin Dong-Mi as Chae Eun-Jung. Ji Sung as Cha Yo-Han Ji sung is known for his role in Kill Me, Heal Me where he played a son of a wealthy family with seven personalities also known as dissociative identity disorder (D.I.D). In this…