ROCKLAND, Mass.--(BUSINESS WIRE)--EMD Serono, Inc., a subsidiary of Merck KGaA, Darmstadt, Germany, announced today the appointments of Allene Diaz, Senior Vice President, Head of US Oncology; Evan Lippman, Senior Vice President of Neurodegenerative Diseases and Rheumatology; Rami Levin, Vice President of Marketing, Neurodegenerative Diseases and Rheumatology; and Craig Millian, Senior Vice President, Head of US Fertility, Metabolic Endocrinology and HIV.