Dr. Gilman was nominated by President Bush to serve as the Assistant Administrator for the Office of Research and Development which is the scientific and technological arm of the Environmental Protection Agency. He was also named Science Advisor to the Agency. Before this nomination, he was Director of Policy Planning for Celera Genomics in Rockville, Maryland, a bioinformation and drug discovery company known for having decoded the human genome.

Prior to joining Celera, Dr. Gilman was the Executive Director of the life sciences and agriculture divisions of the National Research Council of the National Academies of Sciences and Engineering; the Associate Director of the Office of Management and Budget (OMB) for Natural Resources, Energy, and Science; and, Executive Assistant to the Secretary of Energy. Gilman has 13 years of experience working on the staff of the United States Senate. He received his A.B., M. A., and Ph.D. degrees in ecology and evolutionary biology from Johns Hopkins University, Baltimore, Maryland.