Firm Profile

Our Values

We believe in the value of relationships. We view every client relationship like a partnership, and truly believe that our success is a result of your success.

We are committed to providing close, personal attention to our clients. We take pride in giving you the assurance that the personal assistance you receive comes from years of advanced training, technical experience and financial acumen. Our continual investment of time and resources in professional continuing education, state-of-the-art computer technology and extensive business relationships is indicative of our commitment to excellence.

Partner Profiles

John W. Siedhoff, CPA:

Mr. Siedhoff, a life-long resident of Wichita, received a BA in accounting from Wichita State University (1964). In 1970, Mr. Siedhoff was one of the founding partners of the Wichita office of Knudsen Markel and Monroe, which later became Koch Siedhoff Hand & Dunn, LLP. He is active in many civic, non-profit, and church activities.

Edward P. Dunn, Jr., CPA:

Mr. Dunn joined the firm in 1982. His educational background includes degrees in accounting and business administration from Emporia State University (1980). Mr. Dunn has over forty years of diverse accounting experience. His responsibilities include accounting, auditing, taxation, business consulting services and our firm's quality control. Mr. Dunn's background includes experience in manufacturing, wholesale distribution, oil and gas, medical practice groups, construction, and service industries. He has a particular interest in business consulting, economic development and other tax incentives, M&A activities, and family wealth transfer and estate and trust services. He is a member of the Kansas Society of CPA's, American Institute of CPAs, Wichita Manufacturers Association, Wichita Estate Planning Council and the National Association of Accountants. He is also active in various organizations, holding offices related to the accounting field.

Brandon Riggs, CPA:

Mr. Riggs joined our firm in 1996.  His educational background includes a master’s degree in accounting from Oklahoma State University.  Mr. Riggs has over twenty-five years of diverse accounting experience and has the credentials of Accredited in Business Valuation (ABV). His responsibilities include accounting, auditing, taxation services, and attestation services. He is a member of the Kansas Society of CPA's and American Institute of CPAs.

Jon Oetting, CPA:

Mr. Oetting grew up in Wichita and graduated from Kansas State University with a bachelor of science in business administration and accounting.  With over 25 years of experience, Mr. Oetting joined the firm in 2016 and specializes in taxation and attestation services.  He is a member of the Kansas Society of CPA's, American Institute of CPA's and is involved in various community organizations.

Principal Profiles

Arthur Hoopes:

Mr. Hoopes joined our firm in 1999.  His educational background includes a master’s degree in accounting from Wichita State University.  Mr. Hoopes has over twenty-five years of diverse accounting experience.  His responsibilities include accounting, auditing, taxation services, economic development incentives and merger/acquisition services. He is an affiliated non-CPA member of the Kansas Society of CPA's and American Institute of CPAs.

Manager Profiles

Joe Baier, CPA:

Mr. Baier worked as an avionics technician in a family owned business while attending high school and college.  He received a bachelor’s and master’s degrees in accountancy from Wichita State University in 2001 and 2002, respectively.  Mr. Baier joined the Koch Siedhoff Hand & Dunn Family in 2004, and has had a diverse range of experiences working in taxation, state and local incentives, and attestation services.  He is a member of the Kansas Society of CPA's and American Institute of CPAs.