John Kantke leads the Supported Decision Making group in his role as senior attorney at Hennepin County Adult Representation Services. He has been practicing in guardianship law since 2007 and is a frequent lecturer on Supported Decision-Making and alternatives to guardianship.

He was the founder and director of the Elder Law and Guardianship Alternatives legal clinic at the University of St. Thomas School of Law from 2017-2021. John was also the 2019 winner of the Minnesota Bar Association Elder Law Section's Mary Alice Gooderl Award in recognition of his outstanding contribution to the practice of Elder Law.