Stephan Schiffman is President of DEI Management Group, a dynamic, international sales training and consulting organization based in New York. In business for over 17 years, DEI provides instructional workshops, motivational programs, and licensed support to Fortune 1000 clients as well as smaller companies. DEI Management Group has offices across America as well as Canada.DEI provides a full range of sales training services including motivational speeches for national sales meetings, consulting services, trainer "training", and intensive training sessions for senior sales executives. DEI has a client base of over 9,000 corporations and has trained over 450,000 sales professionals in the United States, Europe, Asia, and South America.

Stephan Schiffman has been cited as the foremost expert in the area of Prospecting Skills and is internationally known as America's #1 Corporate Sales Trainer.

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