Yong-pal (2015) or The Gang Doctor [Yongpal-i] is a South Korean drama series starring Joo Won, Kim Tae-hee, Chae Jung-an and Jo Hyun-jae. It aired on SBS from August 5, 2015 through October 1, 2015. It original was set to have 16 episodes but was so popular that two more episodes were produced. Kim Tae-hee and Jo Hyun-jae worked together on Forbidden Love (2004).
Kim Tae-hyun is a talented surgeon. Desperate for money to pay for his sister’s medical bills, he adopts the code name Yong-pal and offers his medical skills to those in need of medical attention but who cannot do so publicly, dealing with criminals and corrupt plutocrats. Joining a team of corrupt physicians Kim rescues “sleeping beauty” Han Yeo-jin, a chaebol heiress, from a medically induced coma, leading to unintended consequences.