- Neurology resident, Bundang CHA Hospital, CHA Medical University
- Cognitive neurology and dementia research instructor at Samsung Seoul Hospital, Sungkyunkwan University School of Medicine
- Knight Alzheimer's Disease Research Center, Washington University, St Louis, MO, USA, Visiting Fellow
- Director of Dementia Care Center in Seo-gu, Incheon Metropolitan City
- Professor at Catholic Kwandong University International St. Mary's Hospital
- Evaluation committee member, National Institute of Health, Korea Disease Control and Prevention Agency
- Councilor of the Korean Neurological Association
- Editorial committee member of the Korean Neurological Intensive Care Association
- Councilor of the Korean Neurodegenerative Disease Society
- Audit from the Korean Dementia Society
- Director of Magnolia Neuroscience Research Society
- Director of Cognitive Intervention Therapy Association
