Joanne Headshot

Joanne Dietzel, Conference Minist

Joanne Dietzel, Executive Conference Minister

Joanne lives outside of Strasburg with her husband Dan.  They have a son, Andrew, married to Julie, and a daughter, Angela.  They also have two granddaughters, Adelyn and Brenna.  Her responsibilities include supporting, encouraging and resourcing pastors, resourcing congregational leadership groups, and connecting with pastoral clusters.  Joanne desires that pastors and lay leaders not only do their best in carrying out ministry responsibilities, but that they do so with joy and a passion for Christ’s church.  She is energized by learning to know people and hearing their stories, as well as encouraging people in their life journey.  In her spare time, Joanne enjoys planning for and leading worship, playing piano, reading, greenhouse “hopping”, gardening, shopping and being grandma to her granddaughters.

Ruth Yoder Wenger, Conference Minister for New York City

Ruth Yoder Wenger has called New York City home for almost 50 years. She and her late husband David moved there for graduate school in 1971, and stayed because they loved the city and found family among Mennonites there, first at Seventh Avenue Mennonite Church in Harlem, and then at North Bronx Mennonite Church, which they helped start as lay leaders in 1986. Ruth has been serving as pastor since she was called by the congregation in 1995. Her greatest joys in life are observing, and sometimes contributing to, growth in individuals and groups, whether as a pastor, a family member, a friend, a spiritual director or a trainer.  She takes seriously (sometimes with joy and sometimes with trepidation) God’s promise recorded in Isaiah 43:18-19:

Brook Musselman, Conference Coordinator

Brook Musselman, Conference Coordinator

Brook lives in Mountville with his wife Laura, son Silas, and daughter Annalie. He is a 2012 graduate of Eastern Mennonite Univeristy where he studied Peacebuilding and Development, Business Administration and History. Brook completed a six-month term with EMM as a YES team leader in Kenya, helped coordinate the Mennonite World Conference Global Youth Summit in 2015, and leads the Step Up program for MC USA conventions. Brook enjoys the fulfilling work of facilitating ministry with ACC, in addition to biking, backpacking, and warm apple cider.


Njoki Njoroge, Financial Secretary

Njoki Njoroge, Financial Secretary

Njoki and her husband Peter are originally from Kenya. They now reside in Ephrata, Pennsylvania with their two young boys. Njoki enjoys being part of the ACC family where she serves as the Finance Secretary, a role that has deepened her knowledge and understanding of how God uses His people to minister to others in different capacities.   Her favorite season is summer so she can go to the beach and tend to her flowers, but she is finding a lot of fun things that boys are into also.


Lois Ann Mast photo

Lois Ann Mast, Resource Advocate

Lois Ann Mast
Resource Advocate

Lois Ann works to raise awareness of denominational activities and resources as Mennonite Church USA Resource Advocate for ACC. She also serves as ACC’s Historian. She enjoys editing the quarterly Mennonite Family History, leading heritage tours to Europe, and the six grandchildren she and her husband, Lemar, share.


George Stoltzfus, Conference-Related Ministries Council Coordinator


Lemar & Lois Ann Mast, Conference Historians

Lemar and Lois Ann Mast serve as ACC Historians and are available to assist persons preparing for church anniversaries.  This includes compiling a booklet or book to pass on to future generations.  “The lines are fallen unto me in pleasant places; yea, I have a goodly heritage.”  Psalm 16:6.