Judge Jantzen was appointed to Division 4 by Governor Jan Brewer in 2009 and was re-elected in 2010 and 2014. He is currently the Presiding Juvenile Judge for Mohave County. The division’s current case assignment includes adult criminal, juvenile delinquency, juvenile drug court, civil, probate, guardianships/conservatorships, and mental health cases. Prior to being on the Superior Court Judge Jantzen served as a Commissioner handling juvenile cases for two years.
Before taking the bench, Judge Jantzen was a prosecutor for 16 years, 12 with the Mohave County Attorney's Office, two with the City of Kingman and two with The State Attorney's Office in Tallahassee, Florida. Judge Jantzen is a 1991 graduate of the University Of Wyoming College Of Law. He has been licensed to practice law in both Arizona and Florida. He received a B.A. in Mass Communication from Midwestern State University in Wichita Falls, Texas in 1987.