Served
- The Holland Korean Church CRC (2011-2016)
- Tyndale Theological Seminary (2009-2011)
- Calvin Theological Seminary (1994-1998)
- Calvin Korean-American (1990-1994)
- Leave (1989-1990)
- Daehan Theological Seminary (1988-2008)
- Korean-American CRC of Orange County (1986-1989)
- Home Missions (1984-1986)
- Leave (1982-1984)
- Orange Korean CRC (1981-1982)