The Willow Creek Association Group Life Team is:
Bill Donahue, Executive Director—Adult Ministry
Bill’s passion for helping churches develop leaders through small groups led him to Willow Creek in 1992. Bill is currently the Director of Group Life for the Willow Creek Association.
He is also on staff at Willow Creek Community Church as director of Small Groups helping launch and develop the church-wide small group ministry. He was also leader of the Couples Ministry, Director of the Willow Creek Institute, and headed the Leadership Training Department. Bill has a Ph.D. in Adult Education from the University of North Texas, a Master’s in Biblical Studies from Dallas Seminary, and a Bachelor’s Degree in Psychology from Princeton University. He and his wife, Gail, have two children, Ryan and Kinsley.
Greg Bowman, Brand Architect—Adult Ministry
Greg has been involved in small group ministry for over twenty years as a small group member, leader, coach, staff member and consultant. As brand architect for adult ministries at the Willow Creek Association, Greg provides strategic leadership for the development of resources and training tools that impact ministries around the world.
He also speaks on the topic of small group ministry at national and international WCA conferences and training events. Prior to working at the WCA, Greg served for seven years as a small group pastor for Willow Creek Community Church. Before coming to Willow, Greg built and led small group ministries at churches in Cincinnati, Ohio, and Bloomington, Ind. Greg is co-author of Coaching Life-Changing Small Group Leaders with Bill Donahue. He has a bachelor's degree in Christian ministries from Cincinnati Christian University. Greg and his wife, Connie, have a daughter, Courtney, a son-in-law, Ed, and a son, Chris. They recently became grandparents. They live in Elgin, Ill.
Dave Treat, Director of Innovation—Adult Ministry
Originally from Elmira, NY, Dave lived in northern Indiana for 25 years. After six years in a parachurch ministry he founded GranDesign Studios, specializing in graphic design, video production and technology consulting for 17 years.
Dave led the adult small groups ministry at Granger Community Church as a volunteer before moving to the Chicago suburbs to join the staff of Willow Creek Community Church in 2000. As a division leader in the men's ministry and area pastor in Neighborhood Ministries he equipped volunteers and created strategies for connecting and discipling men and women in small groups. In 2006, Dave joined the Willow Creek Association where he is the Director of Innovation for Group Life. He speaks and trains internationally on small group topics. Dave loves to read about history, technology, and leadership. He and his wife, Vicki, have been married since 1985.


