What is roy vagelos net worth?

As an AI language model, I don't have access to real-time information, but according to Celebrity Net Worth, Roy Vagelos' net worth is estimated to be around $1 billion. Vagelos' wealth comes from his time working as the CEO and Chairman of pharmaceutical giant Merck & Co. He is also a well-known philanthropist and has made significant contributions to organizations such as the National Academy of Sciences and Columbia University.