Our Faculty

From the beginning, The Urban Ministry Institute (TUMI) has placed a premium on recruiting and employing the finest and most capable faculty for its educational programming.  From the full time faculty to the carefully chosen adjunct professors, TUMI has been privileged to have faculty members with many years of missionary and pastoral experience, combined with advanced degrees in Biblical Studies, Systematic Theology, Missions and Cultural Studies, and other disciplines.  Since our inception, all of our full time faculty have worked as full time urban missionaries with many years of experience in urban evangelism, discipleship, and church planting.  Not only have they taught locally at the Hope School of Ministry with its many workshops, seminars, and courses, but they have also created quality training tools which are affordable, biblically based, and culturally sensitive.  Our faculty at our national headquarters concentrates both on solid clasroom teaching as well as the development of practical, biblical and user-friendly ministry tools for leaders in urban churches.

The Urban Ministry Institute provides education in context both locally and at satellites across the country through the use of Professors or Mentors in the classroom setting.

Rev. Dr. Don L. Davis

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Dr. Don Davis, an ordained minister and native of Wichita, Kansas, is the Founder and Director of World Impact’s Urban Ministry Institute.  He attended Wheaton College and Wheaton Graduate School, and graduated summa cum laude in both his B.A. (1988) and M.A. (1989) degrees, in Biblical Studies and Systematic Theology respectively. He earned his Ph.D. in Religion from the University of Iowa School of Religion (2000). Having served churches as both an associate and senior pastor, Don has served as Director of World Impact Wichita, as well as its Vice President of Education.

 In addition to his current duties as the Institute’s Director and as professor in its Hope School of Ministry, Dr. Davis also serves as World Impact’s national Vice President of Leadership Development, and oversees the training of urban missionaries, church planters, and city pastors, and facilitates training opportunities for urban Christian workers in evangelism, church growth, and pioneer missions. He also leads the Institute’s extensive distance learning programs (as of January 2012 we have 99 Institute satellites in 12 countries, facilitating leadership development with organizations like Prison Fellowship, the Church of God in Christ, and the Evangelical Free Church of America. 

A recipient of numerous teaching and academic awards, Don has served as professor and faculty at a number of fine academic institutions, having lectured and taught courses in religion, theology, philosophy, and biblical studies at schools such as Wheaton College, St. Ambrose University, the Houston Graduate School of Theology, the University of Iowa School of Religion, the and Robert E. Webber Institute of Worship Studies.  He has authored a number of texts, curricula, and study materials to equip urban leaders, including the Capstone Curriculum, TUMI's premiere distance education seminary instruction.  One of his latest books, Sacred Roots: A Primer On Retrieving the Great Tradition, focuses on how urban churches can be renewed through a rediscovery of the historic orthodox faith.  Dr. Davis has participated in academic lectureships such as the Staley Lecture series, renewal conferences like the Promise Keepers rallies, and theological consortiums like the University of Virginia Lived Theology Project Series. He is also a member of the American Academy of Religion and the Society of Biblical Literature.  Don received the Distinguished Alumni Fellow Award from the University of Iowa College of Liberal Arts and Sciences in 2009.  He is also a member of the Society of Biblical Literature, and the American Academy of Religion.

Don has been married to Elizabeth (Beth) since February 1975. Their oldest son, Matthew David, was 26 years old when he went home to be with the Lord in August of 2003. They have two other grown children, Joanna Davis-McEligatt, an assistant professor of ethnic studies at the University of Louisiana (Lafayette), and Daniel, who lives in Lawrence, Kansas, and is completing a Masters in English at the University of Iowa.

 ♦ Biography
♦  Contact Dr. Davis

Rev. Don Allsman


Don Allsman is Vice President of World Impact and the Satellite Director of The Urban Ministry Institute (TUMI), World Impact’s urban leadership development center, supporting the work of dozens of TUMI sites worldwide. He is also the co-dean of the School for Urban Cross-Cultural Church Planting, serving with Dr. Don Davis.

Don grew up in Bakersfield, California where he received the Lord in sixth grade. In high school and college, he was Student Body President, President of Fellowship of Christian Athletes, and an Inter-Varsity Christian Fellowship small group leader. Don was captain of the Bakersfield College track and field team and was later inducted into its Hall of Fame. He went on to be part of the conference champion Fresno State track team in 1983-84.

Don earned a Bachelor of Science in Industrial Engineering at California State University, Fresno (1984) and a Master of Business Administration from Wichita State University (1986) before working in construction management (Granite Construction), aerospace (Boeing and Northrop), and management consulting (Wygle and Company).

Since 1991, Don and his wife, Cathy, have been missionaries with World Impact as Vice President of Administration and later as Vice President of Strategic Planning. They have two sons, Ryan and Mark.


♦  Contact Rev. Allsman

Ryan Carter, National Staff

nmg 1439-600Ryan is a native of Houston, Texas. Before joining the World  Impact Wichita staff in 2008, he and his wife, Amber, served among the urban poor in Houston and Dallas. Currently, he is a church planter and the coordinator of Christ the Victor Leadership School, a TUMI Satellite in Wichita. 

He is a graduate of the University of Houston (BA in Philosophy) and Dallas Theological Seminary (ThM in Old Testament Studies and Christian Education). His ministry experience includes children and youth ministries, associate pastor, church planter, and pastor.
The Carters have two young sons, Benjamin (3/10/09) and Nathaniel (12/10/10).


Rev. Rich Esselstrom, National Staff


Rich is an ordained minister and graduate of Westmont College (CA) and has served as a urban missionary with World Impact since 1986.

Since joining World Impact, he has served as a community minister, city director and church planter in Wichita, Chester (PA), Dallas and San Diego.  Currently he is the director of The Urban Ministry Institute of San Diego and  on national staff with The Urban Ministry Institute.

 Rich and his wife, Karin, are also on a church plant team in the City Heights area of San Diego.  They have three children, Justin, Karris and Josiah.

♦  Contact Rich

Juan Pablo Herrera, National Staff

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Juan Pablo Herrera is a part of TUMI National Staff and has been leading a church plant and serving with World Impact in Dallas since 2007. He is a church planter and has given oversight and leadership to churches Guadalajara. He co-leads the Dallas TUMI Satellite and also oversees our TUMI satellite in Guadalajara.

He and his wife, Sol, have been involved in evangelism, church planting, and discipleship through the church for many years and have seen the Holy Spirit work through this ministry, bearing fruit for the Kingdom.

Juan Pablo and Sol live in Dallas and have two grown children.

♦  Contact Juan Pablo

Dr. Bob Lay, National Staff

Bob portraitBob Lay was installed as Dean of TUMI-L.A. in June of 2011.  Bob earned his Doctorate of Education degree from the Presbyterian School and Union Theological Seminary of Richmond, Virginia, Masters degrees from Gordon Conwell Theological Seminary (Old Testament Studies) and the University of North Carolina at Charlotte (M.Ed.), and a B.A. in the Social Sciences, also from UNCC. Bob served as Christian educator for St. Giles Presbyterian Church from 1980-86, was Assistant Professor of Religion at Northwestern College of Iowa from 1990 to 95, and Professor of Biblical Studies and Christian Ministry at Taylor University from 1995 through 2010. Bob has published Readings in Historical Theology: Primary Sources of the Christian Faith (Kregel Press, 2009), Lessons of Infinite Advantage: William Taylor’s California Experiences (Scrarecrow Press, 2010), and a number of scholarly articles, some of which appear in the recently published Encyclopedia of Religion in America (CQ Press, 2011).

In 2010 Bob submitted his resignation to Taylor University and, together with his wife Chris, joined the staff of World Impact to serve the inner city of Los Angeles. Chris serves as secretary for the Los Angeles Christian School, elementary division. Chris and Bob celebrate their 30th wedding anniversary in July of 2012. They have one child, Rebekah, who graduated from Taylor University (her father’s favorite among his 300 student/majors during his time at Taylor), and who is married and lives with her husband Jorge Veitia in Miami Beach, Florida. The Veitias are building a ministry to survivors of sex trafficking.

Contact Bob

Andrew Lee, National Staff

Andrew Lee joined World Impact in Chester, PA in August of 2002 as a math and science teacher at the Frederick Douglass Christian School.  Soon after, he served as the Ministry Coordinator and then joined the Highland House church plant team.  In 2007, when The Urban Ministry Institute of Chester was launched, he became the site coordinator for TUMI Chester.  Andrew has a Bachelors of Science degree in Mechanical Engineering from Drexel University and was attending Virginia Tech pursuing his Masters in Mechanical Engineering when God called him to urban ministry.

Andrew enjoys teaching courses through the Capstone Curriculum at the TUMI Chester site as well as in the local state prison, the State Correctional Institute at Chester.  He was married to his wife, Karen on October of 2008 and their first child, Christopher James Sukyul Lee was born in February of 2010.

♦  Contact Andrew

Frank Schultz, National Staff

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Frank and his wife Melodi, joined World Impact in 1991.  He served in facility maintenance and ministry group coordinator for the Newark, NJ ministry.  Frank, over the years, has served as the community ministry, city director, city administrator, and church planter.  In 2005, The Urban Ministry Institute - Newark was launched with Frank as site coordinator working with TUMI-Newark until 2013.

Frank currently is the World Impact Thrift Store - Newark manager.  He also supports local leadership in special projects and programs as necessary.

♦  Contact Frank

Rev. Hank Voss, National Staff

Hank currently serves as Senior National Staff with TUMI. He worked with The Urban Ministry Institute of Los Angeles from 2001 until 2009 and served in a variety of roles including Advisory Board Member, Mentor, and Dean.  He is currently completing a PhD in Systematic Theology at Wheaton College, and is a graduate of Taylor University (Biblical Studies, Christian Education) and Talbot School of Theology (M.A. New Testament; MA in Christian Education).  Hank's ministry experience includes: youth pastor, cross-cultural church planter, headmaster of a Christian school, and Director of Training and Member care for World Impact Los Angeles. 

Hank has been married to fellow World Impact missionary Johanna Voss since 2001 and they have four children, Samuel, David, Renee, and Isaiah.

♦  Contact Hank

Adjunct Faculty

To facilitate the training of our students, we enlist mature Christian leaders, pastors, missionaries, and Christian educators from around the country to teach courses at our satellites.  These professors or mentors teach under the direction of The Urban Ministry Institute faculty, using instruction methods and materials which take into account urban needs and cultural diversity.