Tim Clark is a researcher in biomedical informatics with two decades of experience in the field. He is Director of Informatics at the MassGeneral Institute for Neurodegenerative Disease; holds an Instructor appointment at Harvard Medical school; and is an Investigator and Executive Committee member at the Massachusetts Alzheimer Disease Research Center. Tim is also a Founding Editorial Board member of the journal Briefings in Bioinformatics. Tim was formerly Vice President of Informatics at Millennium Pharmaceuticals, where his team built one of the first integrated bio- and chemi-informatics software platforms in the pharmaceutical industry. His current research group is based in the Neurology Research Department of the Massachusetts General Hospital (MGH), where it works in the areas of neuroinformatics, semantic web, and social computing.