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Who is Kim Woo-seok, Park Tae-kyung in Doctor X? Age, agency, key works — and the other Kim Woo-seok

Kim Woo-seok, born in 1994, plays intern doctor Park Tae-kyung in SBS's Doctor X: Mafia in White, which began on October 9, 2026. This page covers his debut and roles, and how he differs from the Kim Woo-seok of UP10TION and X1 (born 1996), drawn from 14 press sources.

The Kim Woo-seok on this page is an actor born on March 3, 1994. He debuted in 2017 in season 2 of the web series Love Playlist, then appeared in OCN's Voice 2, tvN's Military Prosecutor Doberman and MBC's The Forbidden Marriage before taking a lead role alongside Kim Ji-won, Lee Jung-eun and Son Hyun-joo in SBS's Doctor X: Mafia in White in October 2026. His agency is Alien Company.

There is a second Kim Woo-seok in Korean entertainment: a singer and actor born in 1996 who was a member of the boy groups UP10TION and X1. They are different people; the first question below explains how to tell them apart. Common questions are answered below, with a source number on every claim.

WorkYear / formatRole and reported results
Love Playlist season 22017 / web seriesHis debut.6
Voice 22018 / OCN seriesPlayed Jin Seo-yul, the youngest member of the Golden Time team — a digital forensics specialist who finds crime clues in data left on devices and online.7
Rookie Cops2022 / Disney+ seriesCast member.9
Military Prosecutor Doberman2022 / tvN seriesPlayed Noh Tae-nam, a third-generation heir who became chairman of a major conglomerate in his late twenties.8
The Forbidden Marriage2022–2023 / MBC seriesPlayed Lee Shin-won, friend and retainer of King Lee Heon.9
Doctor X: Mafia in White2026 / SBS seriesLead role as Park Tae-kyung, a new surgical intern at Guseo University Hospital. Episode 1 drew 11.4% nationwide and episode 2 14.9%; No. 1 on Netflix's non-English TV chart for October 5–11.1,2,3,4

Which Kim Woo-seok? The actor born in 1994 and the singer-actor born in 1996

The Kim Woo-seok on this page was born on March 3, 1994, and is an actor who debuted in the web series Love Playlist. He is the one playing intern Park Tae-kyung in Doctor X. The other Kim Woo-seok, born in 1996, was a member of the boy group UP10TION and joined the project group X1 after finishing second in the 2019 final of Mnet's Produce X 101. After X1 he released his first solo album, Red Moon (적월), in May 2020 and began acting in the web series Twenty-Twenty. He enlisted as an army band member on November 4, 2024. When looking up roles or photos, tell them apart by birth year (1994 vs. 1996) and whether the profile mentions UP10TION and X1.

6,11,12,13

How old is he?

Actor Kim Woo-seok was born on March 3, 1994, which makes him 32 as of October 2026. He studied acting at the Seoul Institute of the Arts.

6

Who does he play in Doctor X?

In SBS's Friday–Saturday drama Doctor X: Mafia in White he plays Park Tae-kyung, a new surgical intern at Guseo University Hospital. SBS announced him as a lead alongside Kim Ji-won, Lee Jung-eun and Son Hyun-joo in November 2025, describing Park as a privileged intern "with a kind and warm outlook." Park is good-hearted and eager but clumsy at everything; meeting the genius surgeon Gye Su-jeong (Kim Ji-won) changes his hospital life and his values as a doctor. At the press conference at SBS in Mokdong on October 6, 2026, he said he had been waiting for a chance to work with the senior actors he watched.

1,2,3,14

What is Doctor X, and how is it doing?

Doctor X: Mafia in White is a Korean adaptation of TV Asahi's Japanese Doctor-X series, directed by Lee Jung-rim. It premiered on October 9, 2026, airing Fridays and Saturdays at 9:50 p.m. Episode 1 drew 11.4% nationwide (peaking at 12.9%) and episode 2 drew 14.9% (peaking at 17.4%). It also streams on Netflix, where it ranked No. 1 among non-English TV shows for the week of October 5–11, with 9.9 million hours viewed and 4.6 million views in its first three days.

4,14

What is he known for?

After debuting in season 2 of the web series Love Playlist in 2017, he played Jin Seo-yul, the Golden Time team's youngest member and a digital forensics specialist, in OCN's Voice 2 in 2018. In 2022 he appeared in Disney+'s Rookie Cops, tvN's Military Prosecutor Doberman (as conglomerate heir Noh Tae-nam) and MBC's The Forbidden Marriage (as Lee Shin-won, the king's friend and retainer). In a January 2023 interview he looked back on that year as one in which those three series let him try many different roles.

6,7,8,9

Does he perform in musicals?

Yes. He was in the ensemble of the musical Red Book in 2018, played "I" in Thrill Me in 2019, and played Pluto in Time Between Dog and Cat in 2020.

6

What agency is he with?

Actor Kim Woo-seok is with Alien Company; a September 2026 Newspim report also identified him as an Alien Company actor.

5,10

What is he doing now? As of October 2026

On September 24, 2026 he threw the ceremonial first pitch at the KT Wiz–NC Dinos game at Suwon KT Wiz Park, and on October 6 he attended the Doctor X press conference. As of October, Doctor X is airing on SBS on Friday and Saturday nights and streaming on Netflix.

3,4,5

Where can I watch his work?

Doctor X: Mafia in White airs on SBS and streams on Netflix. Rookie Cops was released as a Disney+ original series. Availability of his other work varies by country and over time, so searching each service by title is the most reliable way to check.

4,9

How to read this page

This explainer only repeats what press reports and a performing-arts database have published; the numbers at the end of sentences refer to the sources below. Ratings are the nationwide figures quoted in press reports. It will be updated when new roles or agency changes are announced.

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Kim Woo-seok Doctor X: Mafia in White Kim Ji-won Lee Jung-eun Son Hyun-joo Netflix

Sources

  1. press SBS 연예뉴스, "큰 거 온다"…SBS 2026년 기대작 '닥터X', 김지원·이정은·손현주·김우석 주연 확정, 2025-11-18
  2. press 위키트리, ‘닥터X’ 김우석, 김지원 만나 인생 뒤바뀐 인턴 박태경으로 극과 극 케미 예고, 2026-09-08
  3. press 일간스포츠, [포토]김우석, 장난꾸러기 하트, 2026-10-07
  4. press TV리포트, 공개 첫 주 만에 '990만 시간' 대기록 달성…넷플릭스 1위 씹어먹은 韓 드라마, 2026-10-16
  5. press 뉴스핌, 배우 김우석, KT 위즈 승리 기원 시구…'닥터X' 연기 변신 예고, 2026-09-23
  6. press 더뮤지컬, 김우석 인물 정보
  7. press 텐아시아, 보이스2 골든타임팀 막내 김우석, 팔방미인 신예, 2018-08-24
  8. press 뉴스토마토, '군검사 도베르만' 안보현·조보아·오연수·김영민·김우석 캐스팅 확정, 2021-11-03
  9. press OSEN, '금혼령' 김우석 "군입대 예정, 할 수 있을 때 최선 다할 것" [인터뷰 종합], 2023-01-26
  10. press 스포츠경향, [공식] 무진성, 김병철·김우석과 한솥밥, 2023-09-19
  11. press 텐아시아, [프듀X 종영] 엑스원 1위 김요한·X 이은상...이진혁·김민규 눈물의 탈락, 2019-07-20
  12. press 엑스포츠뉴스, 김우석, 비주얼+보컬 이어 '연기 맛집' 되기까지[★타임워프], 2020-09-05
  13. press 스포츠경향, 배우 김우석, 팬송 ‘In The End’ 싱글 발매, 2024-11-13
  14. press 텐아시아, 시청률 23.1% '김부장' 넘어설까…SBS, 소지섭→김지원 손잡고 하반기 흥행 정조준 ('닥터X')[종합], 2026-10-07
Cite this page

“Who is Kim Woo-seok, Park Tae-kyung in Doctor X? Age, agency, key works — and the other Kim Woo-seok.” Hallyu Wiki. https://hallyu.wiki/en/guides/kim-woo-seok-actor-faq/ (Retrieved 2026-10-19).

How this article was made: read official statements, court/regulator records and at least two independent outlets; community posts are used only as attention signals. Written by Hallyu Wiki editors with AI assistance — check the sources. Request a correction