Organizational Leadership

Continuing our focus on seasoned “leaders of leaders,” Asbury Theological Seminary is excited to add a Doctor of Ministry degree in Organizational Leadership in 2018. Students will dive deeply into adaptive leadership to become culture shapers in their ministry contexts. Collaborative (not solo) leadership requires particular character, strategy, and perspective. Anchored in biblical and theological foundations, supported by relevant leadership theory and practice, the Organizational Leadership D.Min degree equips pastors, directors, and educators. Students’ capacities develop from the inside out in a vibrant, spiritually formative environment that equips minds, hearts, and hands for a new season of calling.

Questions? Meet a member of the D.Min team in a weekly webinar session at Begin your Asbury journey at

Cohort Syllabi

DM(ORG)915A, W1  Seminar I Kenotic Leadership
DM9ORG)915B, X1 Seminar I Kenotic Leadership
DM(ORG)916A, W1  Seminar II Coaching in Complex Systems
DM(ORG)916B, X1 Seminar II Coaching in Complex Systems
DM(PLE)917A, W1 Seminar III Community Shaping Leadership
DM(PLE)917B, X1 Seminar III Community Shaping Leadership
DM(PLE)918A, W1 Seminar IV Leading Change 
DM(PLE)918B, X1 Seminar IV Leading Change


Dr. Tom Tumblin served seventeen years in parish ministry before joining the Asbury Theological Seminary faculty in 1999. He has pastored churches as small as 30 and as large as 3,000 in attendance. His appointments in the West Ohio Conference of the United Methodist Church have included ten years on staff at Ginghamsburg UMC and five years as District Superintendent of the Findlay and Northwest Plains Districts. Dr. Tumblin helped direct Asbury’s Doctor of Ministry program for eleven years prior to assuming the associate provost role. He serves widely as a consultant to local congregations and as a leader in the academy.

Dr. David Gyertson joined the Asbury Theological Seminary administration in August 2015. Dr. Gyertson has a broad background in higher education, publishing, consulting, executive coaching, ministry and media and has held senior leadership positions in religious, charitable and educational environments, including international and cross-cultural settings. Before coming to Asbury Theological Seminary, he served as interim Headmaster of Maranatha High School in Pasadena, CA. Prior to that he was Distinguished Professor of Leadership Formation and Renewal at Regent University in Virginia. David was a founding team member of the University in 1977 and returned as President in 1990. Dr. Gyertson also served as President of Asbury University and Taylor University.

Dr. Gyertson is an ordained minister having served in senior pastoral positions in Free Methodist and Presbyterian settings. In addition, Dr. Gyertson is a strategic initiatives consultant and executive coach to faith-based organizations and their leaders specializing in board governance training, transition planning and special projects implementation. He conducts leadership retreats in areas of spiritual formation for organizational leaders, ministry professionals and others desiring to grow personally and professionally as committed followers of Christ. He has delivered numerous lectures and published articles, chapters and books on a variety of topics related to Christian thought and practice, executive leadership as well as Scripture studies and is a frequent speaker/lecturer at conferences, camps, schools, universities & churches.

David’s wife Nancy is a retired elementary school teacher. Their daughter Andrea and her husband Brady are actively involved in the film industry in Los Angeles. The Gyertson’s have two grandchildren.

Dr. Bryan Sims has worked since 2001 as a Leadership and Organizational Change Coach with Spiritual Leadership, Inc. (SLI) where he has trained and coached leaders, teams, churches, and organizations over extended periods of time to bring spiritual awakening and missional effectiveness. In his work with SLI, he has worked in several United Methodist Conferences including Northwest Texas, West Virginia, Tennessee, Kentucky, Nebraska, and Alabama-West Florida. In each of these places significant transformation is occurring in leaders, churches, and communities, as well as in the conferences. Bryan has also led groups of business leaders through WorkLife Incubators in which leaders are growing in Christ and learning new ways to integrate their faith and work. His most rewarding work has come through coaching three dying congregations in West Virginia to become a united, new community of faith (SLI ReStart). This new church has discovered the power of team leadership in covenant, lay mobilization, and intentionally effective disciple making and mission.

In addition, Bryan is a co-author on version 2 & 3 of the L3 Leadership Incubator Materials developed in partnership with Discipleship Resourcesand SLI (2008, 2010), along with two audio CD’s: Demonstrate Your Power (1999) and Black and White (1997).

He and his wife MyLinda have been happily married since 1997 and have four children: Isaiah, Luke, Silas, and Lydia.

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