Dennis D. Theis, CPA
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“When working with clients, I feel it is important to always be honest and fair. It is also important to present clients with all information, options and potential consequences up front, so they are never surprised with the end results.”
Dennis joined Maner Costerisan in 1990 upon his graduation from college. As an audit principal, he focuses his practice on providing financial statement related services to clients throughout various industries including manufacturing and distribution, nonprofit organizations, and governmental and retail entities. Providing clients with opportunities for improvement is a key goal in each engagement.
Beyond his client service responsibilities, Dennis plays numerous other roles at Maner Costerisan and is an integral part of the firm’s success and execution. He serves as director of quality control, as well as director of continuing professional education for the firm. Dennis is a member of Maner Costerisan’s Marketing Committee and Education Services Group, and is the leader of the Manufacturing and Distribution Solutions Group. He also assists clients in utilizing the additional resources of the BDO Business Resource Network (BRN), which is designed to improve performance by reducing costs and improving technology and operational efficiencies.
Dennis was inspired to go into the accounting field because he recognized that accounting gave a broad perspective into many different facets of business. Dennis attributes his success to always listening to and anticipating client needs, the vast resources of Maner Costerisan and a strong work ethic.
Dennis was raised on a dairy farm in Central Michigan as the youngest of 11 children. He currently resides in Lansing with his wife, Luann, and their three daughters. In his free time, Dennis can usually be found outdoors where he enjoys boating, kayaking and fishing with his family at his cottage. He also likes to run, and play catch and lawn games with his children.