Justice Johnson was appointed to the Court on March 15, 2005, by Gov. Rick Perry. He was serving as chief justice of the Seventh Court of Appeals in Amarillo at the time of his appointment.
He was elected to the Seventh Court of Appeals in 1998 and was elected chief justice in 2002. He practiced law from 1975 until 1998 with the Lubbock law firm of Crenshaw, Dupree & Milam, L.L.P.
Justice Johnson attended Texas Tech University School of Law, where he was a member of the law review and graduated with honors in 1975. He has served on numerous committees of the State Bar, is a member of the College of the State Bar, is a Life Fellow of the Texas Bar Foundation and the American Bar Foundation, and has served as president of the Lubbock County Bar Association. He is board certified in civil trial law and personal injury trial law.
From 1965 until 1972 he served in the U.S. Air Force as a pilot. He is a Vietnam veteran.
Justice Johnson is married to Carla Jean Johnson and has five children.
Justice Johnson, appointed to a vacancy left when Justice Michael H. Schneider was appointed to the U.S. District Court in Tyler, was elected to fill the remaining two years of Justice Schneider's term.
Justice Johnson was re-elected on November 4, 2014, for a term that begins on January 1, 2015, and will expire on December 31, 2020.