Career:

- 1990.02.: Gradate and M.D. College of Medicine, The Catholic University of Korea
- 1991.03.~1995.02.: Residency, Department of Internal Medicine, Kangnam St. Mary’s Hospital, The Catholic University of Korea, Seoul, South Korea.
- 1995.03.~1998.04.: Army Doctor, Captain, 1st Artillery Corps, Korean Army
- 1998.05.~2001.02.: Clinical Fellow, Division of Cardiology, Department of Internal Medicine, Kangnam St. Mary’s Hospital, The Catholic University of Korea, Seoul, South Korea.
- 2003.11.~2005.05: Visiting Scholar (Research Fellow), Cardiovascular Imaging Research and Teaching Center, University of Washington Medical Center, Seattle, WA, USA
- 2012.03. ~ present: Professor, Division of Cardiology, Department of Internal Medicine, Seoul St. Mary’s Hospital, The Catholic University of Korea, and Seoul, South Korea.
- 2019.01 ~ present: Chief, Division of Cardiology, Department of Internal Medicine, Seoul St. Mary’s Hospital, The Catholic University of Korea, and Seoul, South Korea.

Memberships of medical societies:

1.Member, Korean Society of Cardiology (KSC)
2. Member, Korean Society of Echocardiography (KSE)
3.Member, Korean Society of Hypertension (KSH)
4.Member, Korean Society of Ultrasound (KSU)
5.Fellow, European Society of Cardiology (FESC)
6.Fellow, American College of Cardiology (FACC)
7.Member, American Heart Association (AHA)
8.Member, American Society of Echocardiography (ASE)
9.Executive board member, Asian-Pacific Association of Echocardiography (AAE)

Important positions in medical societies:

1.(2018. 05~present) Director, Textbook Committee, Korean Society of Echocardiography (KSE)
2.(2017.01~2018.05) Chairman, Organizing Committee of ECHO ASIA 2018
3.(2016.05~2018.04) Director, Scientific Committee, Korean Society of Echocardiography (KSE)
4.(2014.05~2016.04) Director, Education and Quality Committee, Korean Society of Echocardiography(KSE)
5.(2008.05~2012.04) Secretary general, Korean Society of Echocardiography (KSE)
6.(2017.03~present) Vice-President, Vascular Research Working Group in Korean Society of Cardiology (KSC)
7.(2017.01~2018.12) President, Korean Pulmonary Hypertension Research Group in Korean Society of Hypertension (KSH)
8.(2018~present) Secretary general, Korean Chapter of International Society of Cardiovascular Pharmacotherapy (K-ISCP)
9.(2016.05~2018.04) Scientific Committee member, Korean Society of Cardiology