OCC Staff

Dr T Feb 2016 reduced size

The Rev. Dr. William Tabbernee
Executive Director

Dr. Tabbernee

Before taking up his position as Executive Director of the Oklahoma Conference of Churches in 2010,  Dr. William (Bill) Tabbernee was President and Distinguished Professor of the History of Christianity at Phillips Theological Seminary in Tulsa, Oklahoma, from 1991 to 2009. Dr. Tabbernee has extensive experience in ecumenical relations, including more than 20 years service as a member of the World Council of Churches’ Commission on Faith and Order. Dr. Tabbernee’s academic specialty is Christian thought and history. He continues to write, teach, and publish in this field. He also co-directs an archaeological project, exploring the site of two long-lost ancient cities which he discovered in Turkey. His most recent book is Early Christianity in Contexts:  An Exploration Across Cultures and Continents  (2014). An ordained minister in the Christian Church (Disciples of Christ), Dr. Tabbernee has served local congregations and was a seminary president in Australia before coming to live in the United States.  

The Rev. Mary Hughes Gaudreau
Director of Emotional and Spiritual Care

Rev. Mary Hughes Gaudreau

Rev. Mary Hughes Gaudreau serves as Director of Emotional and Spiritual Care for the Oklahoma Conference of Churches. She is responsible for OCC’s disaster spiritual and emotional care ministries.
Consistent with new National VOAD Disaster Spiritual Care Guidelines, she facilitates OCC’s training and credentialing of local spiritual care responders who are actively engaged in addressing disaster-related spiritual and emotional care needs.
Rev. Gaudreau, a native of Oklahoma, is an ordained United Methodist deacon and licensed professional counselor who first entered into disaster response work following the 1995 Oklahoma City Murrah Building bombing. Since that time she has provided direct training, response, and consultation in more than two dozen states that have experienced disasters. Rev. Gaudreau served as a national consultant for the United Methodist Committee on Relief from 2005-2013 and was the designer of UMCOR’s national disaster spiritual and emotional “Care Team” program.
As past-chairperson of the National VOAD Emotional and Spiritual Care Committee, Rev. Gaudreau helped facilitate the development and ratification of the National VOAD Spiritual Care “Points of Consensus” and served as chairperson of the National VOAD Disaster Spiritual Care Guidelines writing group. She has been instrumental in the creation of numerous resources, standards, and operational guidelines related to disaster emotional and spiritual care.

The Rev. Shannon Fleck Speidel
Director of Program Development, Events, and Communications

Rev. Shannon Fleck Speidel

The Rev. Shannon Fleck Speidel serves as the Director of Program Development, Events, and Communications. Shannon is an Ordained Minister with the Christian Church (Disciples of Christ). Prior to joining the staff at the Oklahoma Conference of Churches, Shannon served as the Associate Minister at Central Christian Church in Enid, OK, the Protestant Parish Coordinator at the Little Rock Air Force Base Chapel in Jacksonville, AR, and the Assistant Minister with Youth at Western Oaks Christian Church in Oklahoma City, OK. Shannon has also worked in Adult Mental Health Services and Juvenile Justice work. Shannon is a graduate of the University of Central Oklahoma and Phillips Theological Seminary.


Ms. Courtland J. Powers

Executive Assistant to the Executive Director

Courtland Powers

Courtland J. Powers serves as the Executive Assistant to the Executive Director. Prior to joining the staff at the Oklahoma Conference of Churches, Courtland served as the Interim Director at the Wesley Foundation at Langston for the Oklahoma Conference of the United Methodist Church. Courtland has also worked in fundraising and operations, human resources, and higher education. Courtland has been instrumental in successful grant development, strategic planning, and policy implementation. Courtland received her Master of Business Administration degree from Oklahoma Christian University, Master of Arts degree in Nonprofit Management from Oklahoma City University, and Bachelor of Business Administration degree from Langston University.