David Bull

Contributing Faculty
College of Management and Human Potential
Ph.D. Health Services

David A. Bull received his Ph.D. in Healthcare Administration at Capella University in May 2010; DBA at Columbia Southern University in Business Administration in September 2017; and MBA in Healthcare Management at Columbia Southern University. He currently serves as Executive Director of Assembly for Christ International Ministries and has served in this role since 2016. David Bull has over twenty years of teaching experience in community colleges, and universities globally. Specifically, he has worked with several universities in the United States as full- time and adjunct faculty, teaching courses in Health Sciences, Healthcare Management, Healthcare Finance and Economics, Healthcare Biostatistics, Long Term Care, Healthcare Operations Management, Project Management, Business Administration, Healthcare Bioethics, Public Health, Healthcare Quality, Gerontology, Healthcare Market Research and Analysis, Human Resources for Healthcare Managers, Healthcare Ethics and Leadership, and Legal Aspects in Healthcare, to list a few.

Recently, he worked with the American Intercontinental University (AIU - Houston) as faculty in charge of Healthcare Administration programs - a position he held since 2014. Before taking up the position with AIU, he was the Director of Education at the North East New Mexico Detention Facility in Clayton, NM. Dr. Bull has also worked as a community organizer, and Director of HACE International, a nonprofit organization he founded in 2003. During this period, he established several programs working with vulnerable populations in Sierra Leone and the United States. Presently, he is the Executive Director of Assembly for Christ International Ministries, Inc., Houston, Texas.

Dr. Bull serves as a contributing faculty in the school of Health Sciences at Walden University where he works closely with other faculty to advance the goals of the University. As a scholar, Dr. Bull he has published academic articles in international journals on leadership, employee turnover, employee satisfaction, and other healthcare related disciplines.


PhD, capella University

DBA, Columbia Southern University

MBA, Columbia Southern University


Bull, D. A. (2018). Employee readiness and turnover intent: A critical examination of hospital employees. . International Journal of Health Sciences

Bull, D. A. (2018). Hospital manager leadership adaptability score and subordinate job satisfaction: Is there a link? Journal . International Journal of Health Sciences

Bull, D. A. (2018). Is supervisor leadership style related to employee turnover intentions? . International Journal of Management and Commerce Innovations