Season Regulars 42

1. 

   Cho Jung-seok

   Lee Ik-jun

2. 

   Yoo Yeon-seok

   Ahn Jung-won

3. 

   Jung Kyung-ho

   Kim Jun-wan

4. 

   Kim Dae-myung

   Yang Seok-hyung

5. 

   Jeon Mi-do

   Chae Song-hwa

6. 

   Shin Hyun-been

   Jang Gyeo-wool

7. 

   Ahn Eun-jin

   Chu Min-ha

8. 

   Kwak Sun-young

   Lee Ik-sun

9. 

   Kim Joon

   Lee Woo-joo

10. 

    Kim Hae-sook

    Jeong Ro-sa

11. 

    Jung Moon-sung

    Do Jae-hak

12. 

    Kim Hye-In

    Myung Eun-won

13. 

    Ha Yoon-kyung

    Heo Sun-Bin

14. 

    Kim Jun-han

    An Chi-yong

15. 

    Moon Tae-yu

    Yong Seok-Min

16. 

    Choi Young-jun

    Bong Kwang-Hyeon

17. 

    Kim Soo-jin

    Song Su-Bin

18. 

    Bae Hyeon-seong

    Jang Hong-do

19. 

    Kim Kang-min

    Im Chang-Min

20. 

    Cho Yi-hyun

    Jang Yoon-bok

21. 

    Moon Hee-kyung

    Jo Young-Hye

22. 

    Cho Seung-yeon

    Ju Jeon

23. 

    Kim Kap-soo

    Ju Jong-su

24. 

    Park Han-sol

    ER Nurse

25. 

    Shin Do-hyun

    Bae Jun-Hee

26. 

    Yang Jo-a

    Hwang Jae-Shin

27. 

    Seo Jin-won

    Min Ki-Jun

28. 

    Jeon Kwang-jin

    Jong Se-Hyuk

29. 

    Seol Yu-Jin

    Eun Seon-Jin

30. 

    Kim Ji-seong

    Han Seung-Ju

31. 

    Yoon Hye-ree

    So Yi-Hyun

32. 

    Lee Ji-won

    Han Hyun-Hee

33. 

    Kim Bi-bi

    Ham Deok-Ju

34. 

    Lee Dal

    Kim Jae-Hwan

35. 

    Lee Noah

    Lee Young-Ha

36. 

    Choi Young-woo

    Cheon Myung-Tae

37. 

    Lee Hye-eun

    Guk Hae-Sung

38. 

    Lee So-yoon

    Kim Tae-Yeon

39. 

    Hong Seok-bin

    Kwon Sun-Jeong

40. 

    Ahn So-yo

    [Mother]

41. 

    Jeong Jae-seong

    [Chief neurosurgeon]

42. 

    Lee Ji-hoon

    Lee Ji-hun

Guest Stars 13

1. 

   Lee Chan-hyung

   Choi Seong-Yeong

2. 

   Sung Dong-il

   Peter [Jung Won's eldest brother]

3. 

   Ha Yi-An

   Jae Hun / Jae Yong

4. 

   Jeong Joon-hwan

   [Priest]

5. 

   Oh Nan-Ju

   [Middle age female medical staff in elevator]

6. 

   Lee Ju-a

   [Teen girl discharging blood]

7. 

   Song Kyung-hwa

   [Mother of teen girl discharging blood]

8. 

   Kim Sang-Il

   Shim Yeong Ho

9. 

   Lee Sae-byeol

   [Mother in labor]

10. 

    Anupam Tripathi

    [Foreign patient's co-worker]

11. 

    Lee Tae-Ho

    [Patient]

12. 

    Yoon Man-dal

    [Jae Hun's father]

13. 

    Lee Il-sub

    Sim Yeong-Su

Crew 0

There are no crew records added to Episode 4.