Doctor John
Cha Yo-Han—an arrogant but genius doctor of anesthesiology—and Kang Shi-Young—a smart, warm resident of anesthesiology—work together to help people with mysterious cases of acute or chronic pain.
Genres
Cast

Hwang Hee
Lee Yoo-jun

Moon Hak-jin
Kim Jung Ho [3rd-year Resident Ophthalmology]

Noreen Joyce Guerra
Flight attendant

Kim Mi-hye
Questioner

Park Jin-young
Nurse

Park Si-wan
Cha Yo Han (child)

Jung Ji-hoon
Min Sung [Yoo Ri Hye's son]

Lee Yo-seong
Cha Yo Han's father

고용화
Lee Ki Suk's mother

Lim Dong-jin
Shim Joon Chul

Jung Kyung-soon
Yoo Joon's mother

Uhm Hyo-seop
Kang Yi-Moon

Jeon No-min
Kang Yi-Soo

Shin Dong-mi
Chae Eun-Jung

Kim Hye-eun
Tae-Kyung

Lee Kyoo-hyung
Son Seok-Ki

Yoon Chan-young
Lee Ki Suk (A CIPA patient)

Lee Se-young
Kang Shi-Young

Ji Sung
Cha Yo-Han

Kim Seung-hyun
Inmate

Jeong In-gi
Jung-Nam

Oh Seung-hyun
Min Joo-Kyung

Oh Yoo-na
Yoo Ri Hye [former actress who suffers from neuroblastoma]

Jang Hee-soo
Professor of Anesthesiology and Pain Medicine

Yun Ju-Sang
Lee Won Gil [Former Minister of Health and Welfare]

Oh Hyun-Joong
Kim Won Hee

Jeong Jae-seong
Kwon Suk

Kim Yeong-hoon
Han Myung Oh

Lee You-mi
Na Kyung Ah

Son San
Hong Yun Jin

Kwon Hwa-woon
Heo Joon

Chun Young-min
Lee Da-hae

Jung Min-ah
Kang Mi-Rae