Dennis A. Yniguez is a Registered Consulting Arborist, an International Society of Arboriculture Board Certified Master Arborist, and the principal of Tree Decisions, an arboricultural consulting firm in Berkeley, California. He received B.A. and M.A. degrees from the University of California, Berkeley, and his J.D. degree from the University of California, Berkeley, School of Law. Mr. Yniguez is a past president of the American Society of Consulting Arborists and has served on their national faculty since 2000. His consulting practice includes tree health and risk assessment, forensic examination and case analysis, insurance claim evaluation, expert trial assistance, and alternative dispute resolution for tree-related issues.