Hyun Soo-jin – 5th year nurse Ji Yi-soo as Yoo Byul – 2nd year nurse Extended as Namyang Girls' High School's teacher as Cheon Soon-hee's father, Namyang Girls' High School's director as club DJ as Choi Mi-ra as Kim Soo-cheol's friend Lee Jin-kwon as Kim Soo-cheol's friend Lee Bom-so-ri as So-ri Son Jang-woo as pregnant patient's son as patient passenger on airplane Im Ji-kyu as gunman Jin Seon-kyu as Kim Chi-hyun as Nam Hae Choi Jeong-hoo as Nam Dal as parliamentarian Na Min-soo Yeo Hoe-hyun as Choi Young-soo (Kang soo's younger brother) (Episodes 17–18) as lawyer Special appearances Lee Ki-woo as Gong Byung-doo – gang boss (Episodes 1, 3–6, 9) Lee Jun-hyeok as boss's subordinate as Oh Young-mi Lim Ji-yeon as Lee Soo-jeong – youngest gold medalist in archery (Episode 7–8) Han Hye-jin as Jo Soo-ji (Episodes 11–12) as Ahn Sung-soo – Jo Soo-ji's stalker/assailant (Episodes 11–12) Namkoong Min as Nam Ba-ram – Nam Hae and Nam Dal's father (Episodes 13–15) Lee Sang-yeob as Kim Woo-jin – Lee Hee-young's fiancé (Episodes 15, 16, 18, 20) Production The Doctors was based on the screenplay by Ha Myung-hee which is one of the winners in Broadcasting Content Promotion Foundation (BCPF)'s 3rd Find the Desert's Shooting Star Screenplay Competition, held in 2010. Then titled as Female Thug Hye-jung (), the series was in talks to air on KBS 2TV's Monday-Tuesday prime time slot in 2015 following the end of Healer, however, it did not push through. (My Love from the Star, You're All Surrounded) was supposed to produce the drama, while PD (Smile Again, Dream High 2) was in talks to direct. First script reading took place on April 28, 2016 at SBS Ilsan Production Studios in Goyang, Gyeonggi Province, South Korea. The series reunited Park Shin-hye and Baek Sung-hyun, who previously played the younger versions of Han Jung-suh and Cha Song-joo, respectively, in the 2003 hit drama, Stairway to Heaven. It also reunited Park Shin-hye and Yoon Kyun-sang who previously worked together in the 2014 hit drama, Pinocchio. In the United States, the drama was aired in the Los Angeles DMA free, over-the-air on Asian American-oriented TV channel, LA 18 KSCI-TV (channel 18) with English subtitles, Monday through Tuesday at 9:00pm, from July 18 to September 20, 2016. Original soundtrack Track listings Charted songs Ratings Awards and nominations Remake The Turkish drama ("Heartbeat") is an adaptation of Doctors, starring Öykü Karayel and