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Professional Experience

Derik Rynearson is a Shareholder at Doeren Mayhew with 18 years of experience in public accounting. He works closely with small businesses, professional services firms, and companies in the manufacturing and food and agribusiness trades. Derik’s areas of expertise include identifying research and development credits, IC-DISC consulting and compliance, and transaction planning and consulting. He also provides tax planning and consulting services to businesses and individuals.

Derik strives to develop deep personal and professional relationships with clients. As their trusted advisor, he continuously communicates with them about their businesses, recent developments, and future goals to find every opportunity for tax savings. His goal is to give clients peace-of-mind that no stone is left unturned.

Derik recently joined Doeren Mayhew as part of a merger announced in January 2022.

Education and Certifications

  • Bachelor of Science Degree, Accounting – Western Michigan University
  • Master of Science Degree, Accountancy – Western Michigan University
  • Master of Science Degree, Taxation – Golden Gate University


  • American Institute of Certified Public Accountants
  • Michigan Association of Certified Public Accountants

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