Maryellen O'Donnell Walter

Maryellen O'Donnell Walter has over 26 years of experience in the pharmaceutical industry, primarily with Merck and Merck Sharp & Dohme. Currently serving as a Business Technology Partner at Merck since September 2012, Maryellen has held various leadership roles including Product Line Lead for Trial Site Management and Associate Director positions across multiple domains including regulatory affairs and clinical trial management. Prior experience includes key account management roles and solutions delivery at Merck Sharp & Dohme from 1997 to 2011. Maryellen holds a Master of Science in Information Science from Penn State Great Valley and a dual Master of Science in Business Administration focusing on Accounting and Marketing from Villanova University.