• Graduated from the College of Medicine, Yonsei University in 1964.
  • Worked as a neurologist and lecturer at the University of Minnesota Hospital.
  • Former Head of the Neurology and Brain Disease Center and Parkinson's Disease Center at "Asan" Hospital in Seoul.
  • Head of the Neurology Department and Brain Disease Center at "Cheongshim".
  • Specialization: treatment of stroke consequences, degenerative brain diseases, epilepsy.