Screenwriter & Director
Main Role
- Lee Seo JinDr. Park Won JangMain Role
- Ra Mi RanSa Mo RimMain Role
Support Role
- Cha Chung HwaCha Mi Young [Nurse]Support Role
- Shin Eun JungDr. Sun Woo Soo JinSupport Role
- Kim Kwang GyuDr. Ji Min JiSupport Role
- Jung Hyung SukDr. Choi Hyung SeokSupport Role
- Seo Bum JuneCha Ji Hoon [Mi Young's son / Nurse]Support Role
- Joo Woo YeonPark Min Goo [Won Jang's first son]Support Role
- Kim Kang HoonPark Dong Goo [Won Jang's second son]Support Role
Guest Role
- Park Sung WoongDr. Park Sung Woong (Ep. 1)Guest Role
- Lee Nak Jun[Himself] (Ep. 1)Guest Role
- Oh Jin Seung[Himself] (Ep. 1)Guest Role
- Woo Chang Yoon[Himself] (Ep. 1)Guest Role
- Park Jin Young[Doctor] (Ep. 1)Guest Role
- Kim Yong Rim[Toenail patient] (Ep. 1)Guest Role
- Park Jae WanDr. Choi Jang Woo (Ep.1)Guest Role
- Park Chan Kuk[Restaurant owner] (Ep.2)Guest Role
- Park Ki Ryung[Doctor] (Ep. 2)Guest Role
- Shim Jin Hwa[Injured hand girl's mom] (Ep.3)Guest Role
- Lee Dong Gun[Swollen esophagus patient](Ep.3)Guest Role
- Lee Sae ChangFrancois Lee (Ep.3)Guest Role
- Han Da SolYoon Ji [Cha Ji Hoon's girlfriend] (Ep. 7, 11)Guest Role
- Chu Jung Hun[Convenience store cashier] (Ep.3)Guest Role
- Oh Chae Eun[Patient wanting manicure] (Ep.4)Guest Role
- Choi Ji Hui[Clothing saleswoman] (Ep.4)Guest Role
- Ko Kyung Man[Won Jang's friend] (Ep. 8)Guest Role
- Yoo Byung Jae Guest Role
- Seol Woo InOh Na Young (Ep. 2)Guest Role
- Lee Dong Geun[Swollen esophagus patient] (Ep. 3)Guest Role
- Jo Young Mi[Funeral meal server] (Ep. 8)Guest Role
- Lee Kun Goo[Paramedic] (Ep. 6)Guest Role
- Yoon Sung WonJi Man (Ep. 8)Guest Role
- Seo Ji HooSeo Ji Woo (Ep. 3)Guest Role
- Jung Sun Chul[Violent patient] (Ep. 8)Guest Role
- Jang Yoon Woo[Laser seminar speaker] (Ep. 10)Guest Role
- Jung Ki Sun[Patient] (Ep. 10)Guest Role
- Moon Woo Bin[Park Dong Gu's teacher] (Ep. 9)Guest Role
- Yun Ki Chang[Cheo Yong] (Ep. 9)Guest Role
- Lee Woo Joo[Park Dong Gu's friend] (Ep. 8)Guest Role
- Park Seung Joon[Park Dong Gu's friend] (Ep. 8)Guest Role
- Jeon Ah Hee[Nurse] (Ep. 5)Guest Role
- Song HoonDr. Bong (Ep. 5, 8)Guest Role
- Kim Min Suk[Water delivery man]Guest Role
- Heo So Yoon[Injured hand girl] (Ep. 3)Guest Role
- Kwak Yeong Seon[Police station parent] (Ep. 10)Guest Role
- Lee Ja Ryoung[Police station parent] (Ep. 10)Guest Role
- Park Jung Hwan[Dr. Park Won Jang's friend] (Ep. 8)Guest Role
- Kim Tae Yeon[Kwon Young Bae's daughter] (Ep. 2)Guest Role
- Koo Do Kyun[Patient’s son] (Ep. 8)Guest Role
- Jo Hyun Sung Guest Role
- Kim Sung Il[Soon Ja's son] (Ep. 6)Guest Role
Bit part
- Jin Yong Jin[Cameo Appearance in Episode 6]Bit part
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