Jon is a Family Practice doctor who directed the medical work that consisted of a small health center, mobile Mother/Child Health clinics, and a network of Community Health Workers in Usandawe, Tanzania from 2006 to 2018.   In 2018 he turned over management of the health center to Tanzanian leadership, and also became the AIM Unit Leader for Central Tanzania, providing leadership support to AIM missionaries in the areas of Vision and Strategy, Admin, and Member Care.