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Coffman Group, LLC | Kansas City & Overland Park, Kansas

Meet Our Sandler Training Team

A local, regional and national company delivering extraordinary results.


Casey Coffman

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Casey Coffman brings drive, passion and decades of goal-breaking experience to what he and his organization, Coffman Group, Inc., do best: create world-class sales professionals and help CEOs drive lasting growth through training, counsel and ongoing support.


Eric Dunn

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Dunn joined the company in 2003 as an associate and soon became a partner in 2005. Since that time Dunn has been instrumental in growing the company’s corporate sales division. His unique communication skills and coaching abilities stem from a wealth of knowledge and experience in both the corporate and entrepreneurial sectors.

Managing Director

Tom Mulligan

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Tom Mulligan brings to the Coffman Group a record of uninterrupted success in sales and sales training. He is an award winning performer at the fortune 500 level and has helped thousands of small businesses achieve their goals. He understands business owners because he is one.

Development Director

Justin Knox

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Justin Knox has been consulting in the areas of sales, training and organizational development for almost eight years. Justin's areas of expertise provide value-based strategies designed to maximize employee retention and improve employees' personal and organizational growth.

Sandler Books

The Sandler library of books includes two Amazon and Wall Street Journal best sellers, as well as the best-selling sales classic for any sales book ever.