Eller’s current and previous board leadership with medical, science and financial entities is widespread. During the 1980s David was heavily involved in numerous business activities, serving as the chairman and chief executive officer of Granada and its subsidiaries. He simultaneously served as the Chief Executive Officer of American National Petroleum Company and its subsidiary, Coquina Oil Corporation, from 1983 through 1987, and as Chairman of the Board of Regents of the Texas A&M University System from 1985 to 1987.

David Eller served on the Board of Trustees of Baylor College of Medicine, Houston Symphony, Houston Ballet, Chapelwood Methodist Church Foundation, Hermann Hospital System and other civic organizations, as well as on the Board of Directors of Allied Bank of Texas, First Interstate Bank, InterFirst Bank, Swift Independent Packing Company and the Texas Cattle Feeders Association, among others.

David has served on countless other boards, including the boards of Celltex Therapeutics Corporation, DuPont Pharmaceuticals Company – Europe, the Foundation for Biomedical Research, Rice University Energy & Environmental Systems Institute, and Texas Chamber of Commerce, among others.

He is also a member of the American Society of Mechanical Engineers, the Houston Engineering & Scientific Society, the Masonic Lodge and the Sons of the Republic of Texas.