EMD Serono, USA
Merck KGaA, Darmstadt, Germany
Merck KGaA, Darmstadt, Germany

Leadership Team

GARY ZIEZIULA


President and Managing Director

JOSEPH LEVEQUE


Chief Medical Officer

LISA WALSH


Regional Controller

BÉLA BERNHARDT


Head of Business Technology Support Americas

LISA BUFFINGTON


Vice President of US Communications

SCOTT FILOSI


Senior Vice President of Managed Markets

TIM GOLDEN


Vice President, Business Excellence

JOHN HUYCKE


Vice President, Strategy & Management Process

MICHAEL MACDOUGALL


Vice President and General Counsel

CRAIG MILLIAN


Senior Vice President, Neurology and Immunology

DANIEL MOYNIHAN


Chief Compliance Officer

MICHAEL J. RUGGIERO


Vice President, US Government Affairs & Policy

DAVID TREXLER


Senior Vice President, Oncology