Dr. Ari Kellen has been appointed executive vice president and company group chairman at Valeant Pharmaceuticals International, Inc., effective January 1, 2014. He has also been named to Valeant’s executive management team. Dr. Kellen was previously a senior partner in McKinsey & Company’s Mid-Atlantic Office and has led numerous strategy, organization and performance improvement studies for health care companies, including corporate strategies for boards and top management teams, bus...