About Our Consulting Group

Diehl Consulting Group (DCG) utilizes a multi-disciplinary approach to service delivery. While each project is led by one of our professional consultants, we emphasize the importance of collaboration both within our own organization and with client organizations. We have also formed regional and national partnerships with a number of contracted field consultants with varying expertise (e.g., psychometrics, advanced data analysis, and software development). This approach capitalizes on various expertise and allows for tailoring overall service delivery to specific client needs.


Jennifer Bellville, consultant


  • Unique professional experience in community college and higher education, workforce development, community development, process and outcome evaluation, data analysis and visualization
    • M.P.A., Sustainable & Economic Development, School of Public & Environmental Affairs, Indiana University, 2012
    • B.A., Economics, University of Wisconsin, 2009

Doug Berry, vice president and partner


  • Unique professional experience in advanced data analysis, performance appraisal, compensation, human resources, human performance technology, and instructional systems design
    • M.A., Industrial and Organizational Psychology, Western Kentucky University, 2008
    • B.A., Psychology, Wabash College, 2006

Drew Buttrum, data analyst


  • Unique professional experience in data management and analysis, economics research, and statistical software packages
    • B.A., Economics, Wabash College, 2021

Jason Chadwell, field consultant


  • Unique professional experience in performance appraisal, community development, epidemiological analysis, selection, human resources and compensation
    • M.A., Industrial and Organizational Psychology, Western Kentucky University, 1997
    • B.A., Psychology, Berea College, 1994

Sam Crecelius, vice president and partner


  • Unique professional experience in training, advanced data analysis, communication, afterschool program administration, instructional design, and evaluation
    • M.A., Communication, Indiana State University, 2013
    • B.A., Communication Studies, Indiana University Southeast, 2008

Heather Davis, assistant consultant


  • Unique professional experience in non-profit administration, non-profit development, grant writing, volunteer management and recruitment, fundraising, social media management, event management, and healthcare support
    • M.S., Public Service Administration, University of Evansville, 2014
    • B.S., Organizational Leadership, University of Evansville, 2012
    • A.S., Education, Ivy Tech Community College, 2009
    • Certificate of Achievement- Principles and Technologies of Fundraising, Indiana University Lilly Family School of Philanthropy, 2016

Dan Diehl, president and partner


  • Unique professional experience in community schools, afterschool program administration and evaluation, advanced data analysis, small business administration, education, mental health, and youth development
    • Ph.D., Social Work, University of Louisville, 2003
    • M.S.W., Social Work, University of Southern Indiana, 1998
    • M.A., Applied Experimental Psychology, Western Kentucky University, 1996
    • B.A., Psychology, Western Kentucky University, 1994
    • Certificate in Business Management, University of Notre Dame, 2014
    • Licensed Clinical Social Worker (LCSW), 340040892A

Andrea Swain, consultant


  • Unique professional experience in health program development, community health needs assessments, substance abuse prevention, healthy communities coalitions, early childhood development, non-profit leadership, and grant writing
    • B.S., Health Education and Promotion (Community Health Concentration), East Carolina University, 2007
    • Certified Health Education Specialist (CHES), 14687

Maureen Tolefree, field consultant


  • Unique professional experience in SPSS data management and support
    • Minnesota School of Business, 1978

Amanda Vote, consultant


  • Unique professional experience in non-profit evaluation and research
    • M.S., Public Service Administration, University of Evansville, 2011
    • B.S., Psychology, University of Evansville, 2004