Dennis Flemming, Founder and Executive Director

Flemming has been a resident of the Hamakua Coast in Hawaii since 1998, using the town of Nīnole as his home base while commuting as project manager for a number of international development initiatives in the South Pacific and around the world. He recognizes that the Hamakua coast’s transition from its long history of sugar production provides invaluable insights for other rural communities grappling with similar challenges.

Before establishing the Hamakua Institute, Flemming spent three decades designing and implementing community programs in developing countries, acting as a consultant, trainer and program manager within both the private and public sectors. He has served as a facilitator and architect of numerous multi-stakeholder development partnerships including: Community Development Initiatives (CDI) Foundation (a set of rural development programs in Papua New Guinea); the Angola Partnership Initiative (pairing private and public sector support for the reconstruction and development of Angola after 27 years of civil war); and the Niger Delta Partnership Initiative, a corporate social enterprise created by Chevron to bring peace and development to the Niger Delta of Nigeria.

Flemming holds an MSc in Sustainable Development from the University of London.


Tam Nguyen

Vice President

Nguyen provides advocacy support and guidance to the Hamakua Institute. He is the Global Head of Sustainability for Bechtel Corporation, based in northern Virginia. He has worked on the development and implementation of corporate sustainability, human rights and other corporate social responsibility policies and strategies for more than 10 years. Prior to that, Nguyen worked with international finance institutions and aid organizations as both a staff member and consultant.

Educated in the United States, Europe, and Asia, Nguyen is a graduate of George Washington University, and holds a doctorate in business administration and two masters’ degrees in international business and international development.


Daniel McCall


McCall has more than 20 years of experience managing conservation and development projects and programs. As am employee of the World Wildlife Fund and CARE, he has worked on initiatives in the countries of Papua New Guinea, Uganda, Somalia, Sudan, Suriname and Guyana. He is skilled in organizational management, program development, partnership development, human resources, donor relations, evaluation, finance and accounting and working in challenging environments. 

McCall holds an MSc in Forestry from the Wageningan University, The Netherlands.


Nancy Gilbert


Following a successful legal career, Nancy has worked with the Water and Sanitation Rotarian Action Group of Rotary International and has established and managed the Appropriate Technology Enabled Development (ATED) Project in the Niger Delta of Nigeria for Engineers Without Borders (EWB) and the Foundation for Partnership Initiatives in the Niger Delta.

​Gilbert holds a LL.B from Osgoode Hall Law School, Toronto, Canada.

Contact us

Hamakua Institute - P.O. Box 60, Ninole, HI 96773 · +1.808.937.7372 · Info@HamakuaInstitute.org