Good Doctor

Chief Producer

• 
  Kim Sung Geun

Composer

• 
  Choi Chul Ho

Director

• 
  Kim Jin U
• 
  Ki Min Su

Executive Producer

• 
  Lee Jang Su

Screenwriter

• 
  Park Jae Bum

Main Role

• 
  Joo Won

  Park Si On

  Main Role
• 
  Moon Chae Won

  Cha Yun Su

  Main Role
• 
  Joo Sang Wook

  Kim Do Han

  Main Role
• 
  Kim Min Seo

  Yoo Chae Gyeong

  Main Role

Support Role

• 
  Ha Kyu Won

  Hye Jin [Nurse]

  Support Role
• 
  Kim Hyeon Soo

  Na In Hae

  Support Role
• 
  Lee Ki Yeol

  Lee Hyeok Pil [Managing director of hospital foundation]

  Support Role
• 
  Jung Ho Geun

  Park Chun Seong [Si On's father]

  Support Role
• 
  Cho Hee Bong

  Ko Chung Man (Chief of department of pediatric surgery)

  Support Role
• 
  Lee Jang Kyung

  Kim Ye Eun

  Support Role
• 
  Oh Eun Chan

  Cha Dong Jin

  Support Role
• 
  Lee Ah Rin

  Lee Ga Gyeong

  Support Role
• 
  Yoon Bak

  Woo Il Gyu

  Support Role
• 
  Ahn Sung Hoon

  Lee U Ram

  Support Role
• 
  Wang Ji Won

  Kim Seon Ju

  Support Role
• 
  Kim Jin Woo

  Park I On [Si On's older brother]

  Support Role
• 
  Yu Je Geon

  Park Ho Seok

  Support Role
• 
  Jin Kyung

  Nam Ju Yun [Chief]

  Support Role
• 
  Kwak Do Won

  Kang Hyeon Tae [Deputy director]

  Support Role
• 
  Uhm Hyun Kyung

  Na In Yeong

  Support Role
• 
  Na Young Hee

  Lee Yeo Won [Chief director]

  Support Role
• 
  Jung Man Sik

  Kim Jae Jun [Chief of Department of HP Surgery]

  Support Role
• 
  Yoon Bong Gil

  Hong Gil Nam

  Support Role
• 
  Kim Chang Wan

  President Jung

  Support Role
• 
  Cheon Ho Jin

  Choi U Seok

  Support Role
• 
  Kim Young Kwang

  Han Jin Uk [Four-year residency]

  Support Role
• 
  Yun Yu Sun

  O Gyeong Ju [Si On's mother]

  Support Role
• 
  Ko Chang Seok

  Cho Jeong Mi [Nurse]

  Support Role
• 
  Seo Hyun Chul

  Byeong Su

  Support Role
• 
  Chae Song Ah

  Eun Mi

  Support Role
• 
  Kang Eun Woo

  Yun Jae Yeong

  Support Role
• 
  Kim Hye Won

  Nurse Kim

  Support Role
• 
  Kim Yoon Joo

  [Gynecologist]

  Support Role
• 
  Lee Won Jae

  [Anesthesiologist]

  Support Role

Guest Role

• 
  Yoo Hae Jung

  Eun Ok (Ep. 4-11)

  Guest Role
• 
  Kim Seon Hwa

  [Eun Ok's aunt] (Ep. 7)

  Guest Role
• 
  Jung Yoon Suk

  Gyu Hyeon (Ep. 8-11)

  Guest Role
• 
  Ban Min Jung

  [Gyu Hyeon's mother] (Ep. 8-11)

  Guest Role
• 
  Ryu Deok Hwan

  [Man cheering Si On] (Ep. 10)

  Guest Role
• 
  Kwak Ji Min

  Lee Su Jin (Ep. 10-12)

  Guest Role
• 
  In Gyo Jin

  [Lee Su Jin's husband] (Ep. 12)

  Guest Role
• 
  Seo Kang Jun

  [One of the punks who wants to beat Shi On] (Ep. 12)

  Guest Role
• 
  Yoon Seung Ah

  [Pregnant woman] (Ep. 12)

  Guest Role
• 
  Yoo Chea Myung

  [Killer] (Ep. 15)

  Guest Role
• 
  Gong Jung Hwan

  [Neurosurgeon] (Ep. 17)

  Guest Role
• 
  Kim Young Hee

  [Family restaurant staff] (Ep. 17)

  Guest Role
• 
  Kang Jin Hwi

  [Ex-gangster] (Ep. 18)

  Guest Role
• 
  Park Ki Woong

  Park Ung Gi (Ep. 20)

  Guest Role
• 
  Choi Ro Woon

  Park Si On [Young]

  Guest Role
• 
  Seo Yoon Ah

  [Cha Yun Seo's friend]

  Guest Role
• 
  Kang Pil Sun

  [Doctor]

  Guest Role
• 
  Yoo Dam Yeon Guest Role
• 
  Jo Eun Hyung Guest Role
• 
  Jung Taek Hyun Guest Role
• 
  Shin Ji Yeon Guest Role
• 
  Kang Young Eun Guest Role

Unknown

• 
  Lee Sang Hyun Unknown
• 
  Lee Chan Hee Unknown
• 
  Bang Jee Min Unknown