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Coffman Group, LLC. | | 913-236-9055

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Meet Your Sandler Team

A local, regional and national company delivering extraordinary results.

Sandler Training by Coffman Group

Sandler Training by the Coffman Group has received the Pinnacle Award from Sandler Training. This is one of the highest levels of awards given by Sandler Training. Sandler Training by the Coffman Group is one of only 7 organizations out of over 250 Sandler Training Centers worldwide to receive the Pinnacle Award.


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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Eric 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.

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.

David Doherty

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David Doherty has led sales and marketing teams ranging from technology start-ups to Fortune 500 companies across a wide variety of industry segments. David specializes in business to business selling.

Brian Ellis

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Brian has joined Sandler Training to help business owners, CEO’s and other executives maximize their output and ultimately grow revenue. He brings a tremendous amount of relevant business expertise to the table. Brian has been fortunate to apply many sales systems, but has found none more enduring than Sandler. He has developed many common-sense resources and examples as a result. Brian is ready to help business leaders unlock the vast potential that exists within their entire organization.

Josh Shirley

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Josh can help you grow your revenue, keep your clients, and upskill your managers and leaders. To do this, he pulls from a long career helping a wide array of companies with B2B sales, demand generation, and marketing analytics.

The Coffman Group is an award winning, certified Sandler Training Center Dedicated to Your Success

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