Dr Mark Lewis, vice president, is a PhD economist with more than 15 years of experience providing economic analysis to clients in litigation and business consulting matters. Dr Lewis provides expert witness support in a wide range of matters, with a focus on antitrust, class certification and healthcare cases. His recent case work has involved cartel allegations in a variety of industries, alleged horizontal and vertical restraints by manufacturers in the technology and construction industries, antitrust claims against brand and generic drug manufacturers, and transfer pricing disputes involving a major beverage company and a medical device manufacturer. Prior to joining Analysis Group, Dr Lewis was a manager in the economic and statistical consulting group of Deloitte Financial Advisory Services.