Dr. Kellen joined Valeant in January 2014. He is responsible for the U.S. Dermatology, U.S. Bausch + Lomb and Latin American businesses. Previously he spent 22 years with McKinsey & Company, where he led growth and turnaround strategies for medical device, pharmaceutical and healthcare services clients. Prior to joining McKinsey, Dr. Kellen worked in senior hospital management and emergency trauma in South Africa. He received his MBBCh and MBA degrees from the University of the Witwatersrand in South Africa.