Pemeran Good Doctor

Joo Won (주원)

as Park Si On

Pemeran Utama

Moon Chae Won (문채원)

as Cha Yun Su

Pemeran Utama

Joo Sang Wook (주상욱)

as Kim Do Han

Pemeran Utama

Kim Min Seo

as Yoo Chae Gyeong

Pemeran Utama

Ha Kyu Won

as Hye Jin [Nurse]

Pemeran Pembantu

Kim Hyun Soo

as Na In Hae

Pemeran Pembantu

Lee Ki Yeol

as Lee Hyeok Pil [Managing director of hospital foundation]

Pemeran Pembantu

Cho Hee Bong

as Ko Chung Man (Chief of department of pediatric surgery)

Pemeran Pembantu

Lee Jang Kyung

as Kim Ye Eun

Pemeran Pembantu

Oh Eun Chan

as Cha Dong Jin

Pemeran Pembantu

Lee Ah Rin

as Lee Ga Gyeong

Pemeran Pembantu

Yoon Bak (윤박)

as Woo Il Gyu

Pemeran Pembantu

Ahn Sung Hoon

as Lee U Ram

Pemeran Pembantu

Wang Ji Won

as Kim Seon Ju

Pemeran Pembantu

Yu Je Geon

as Park Ho Seok

Pemeran Pembantu

Jin Kyung

as Nam Ju Yun [Chief]

Pemeran Pembantu

Kwak Do Won

as Kang Hyeon Tae [Deputy director]

Pemeran Pembantu

Uhm Hyun Kyung

as Na In Yeong

Pemeran Pembantu

Na Young Hee

as Lee Yeo Won [Chief director]

Pemeran Pembantu

Jung Man Sik

as Kim Jae Jun [Chief of Department of HP Surgery]

Pemeran Pembantu

Yoon Bong Gil

as Hong Gil Nam

Pemeran Pembantu

Kim Chang Wan

as President Jung

Pemeran Pembantu

Cheon Ho Jin

as Choi U Seok

Pemeran Pembantu

Kim Young Kwang (김영광)

as Han Jin Uk [Four-year residency]

Pemeran Pembantu

Ko Chang Seok

as Cho Jeong Mi [Nurse]

Pemeran Pembantu

Seo Hyun Chul

as Byeong Su

Pemeran Pembantu

Chae Song Ah

as Eun Mi

Pemeran Pembantu

Kang Eun Woo

as Yun Jae Yeong

Pemeran Pembantu

Kim Hye Won

as Nurse Kim

Pemeran Pembantu

Kim Yoon Joo

as [Gynecologist]

Pemeran Pembantu

Lee Won Jae

as [Anesthesiologist]

Pemeran Pembantu

Yoo Hae Jung

as Eun Ok (Ep. 4-11)

Bintang Tamu

Jung Yoon Suk

as Gyu Hyeon (Ep. 8-11)

Bintang Tamu

Ryu Deok Hwan

as [Man cheering Si On] (Ep. 10)

Bintang Tamu

Kwak Ji Min

as Lee Su Jin (Ep. 10-12)

Bintang Tamu

Seo Kang Jun (서강준)

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

Bintang Tamu

Yoon Seung Ah (윤승아)

as [Pregnant woman] (Ep. 12)

Bintang Tamu

Yoo Chea Myung

as [Killer] (Ep. 15)

Bintang Tamu

Gong Jung Hwan

as [Neurosurgeon] (Ep. 17)

Bintang Tamu

Kim Young Hee

as [Family restaurant staff] (Ep. 17)

Bintang Tamu

Kang Jin Hwi

as [Ex-gangster] (Ep. 18)

Bintang Tamu

Park Ki Woong

as Park Ung Gi (Ep. 20)

Bintang Tamu

Choi Ro Woon

as Park Si On [Young]

Bintang Tamu

Kang Pil Sun

as [Doctor]

Bintang Tamu

Yoo Dam Yeon

Bintang Tamu

Jo Eun Hyung

Bintang Tamu

Jung Taek Hyun

Bintang Tamu

Shin Ji Yeon

Bintang Tamu

Kang Young Eun

Bintang Tamu

Kim Sung Geun

Chief Producer

Choi Chul Ho

Composer

Kim Jin U

Sutradara

Ki Min Su

Sutradara

Lee Jang Su

Executive Producer

Park Jae Bum

Screenwriter