Meet Our Staff

  • Forest City Staff

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    Location(s): Forest City,

    Chad Anderson, Deena Lewison, Lori Rauk, David Arndt, CPA, Gustave Byom, CPA, Doug Bruhns, CPA, David Iverson, CPA, Samantha Dugan, CPA

  • Belmond Staff

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    Location(s): Belmond,

    Cathy Willms, Betty Nash, CPA

  • Garner Staff

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    Location(s): Garner,

    Chad Anderson, Gustave Byom, CPA, Ray Waddingham, CPA

  • Titonka Staff

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    Location(s): Titonka,

    Doug Bruhns, CPA, Adam Helm, David Iverson, CPA

  • David K. Arndt, CPA

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    Location(s): Forest City,

    David has been a certified public accountant since 1984.  He began his career in Minneapolis, MN where he became the manager of a regional certified public accounting firm.  He moved to Forest City in 1992 and he acquired the CPA firm in 1994 and incorporated the firm under the name D.K. Arndt, P.C. in 1996.  He is the managing shareholder of D.K. Arndt, P.C.  His strong sense of commitment to client services is the driving force behind the success of D.K. Arndt, P.C. and its clients. During 2014 he worked with a group of investors to bring a major country music festival to Forest City on Memorial Day Weekend. The festival has featured country music stars such as Blake Shelton, Brad Paisley, Dierks Bentley, Miranda Lambert to name just a few. David volunteers his services to several local organizations and causes. He is the treasurer of Forest City Education Foundation, the local movie theatre, and several other local charities. He is a board member of the Forest City Economic Development, and local Rotary International Club where he was a past president. In 2016 he received the John K. and Louise V. Hanson Lifetime Achievement Award for his years of service to the community.

  • Gustave R. Byom, CPA

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    Location(s): Forest City, Garner,

    Gus joined D.K. Arndt P.C. in 1999, and passed his CPA exam in February 2000. Gus works with a number of individual as well as corporate clients. In January 2004, he became a minority shareholder in the company. Gus has served on several boards of non-profit organizations and donates his time to the community of Garner. Gus lives in Garner with his wife Keri and has three children. Clay is a Sophomore at North Iowa Area Community College, Kailyn and Camren both attend Garner Hayfield Ventura Community School District. In his free time, Gus enjoys golf and camping with his family.

  • Douglas G. Bruhns, CPA

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    Location(s): Forest City, Titonka,

    Doug joined D.K. Arndt, P.C. in November 2006. Prior to becoming a staff member with the company, Doug owned and operated Midwest Tax and Accounting in Lake Mills. Doug also possesses many years of accounting experience in private industry. Doug has two grown sons and lives in Lake Mills with his wife Shannon.

  • Dave Iverson, CPA

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    Location(s): Forest City, Titonka,

    Dave has been a CPA since 1982, and been involved with financial services since 1989. Dave is a shareholder of the firm and is the manager of the Lake Mills office. Dave specializes primarily in business tax consulting. Dave lives in Greene with his wife Molly.

  • Chad Anderson

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    Location(s): Forest City, Garner,

    Chad joined D.K. Arndt, P.C. in October 2009.  Prior to joining the staff at D.K. Arndt, P.C. he worked for the City of Forest City.  Chad enjoys sports and attending his children’s activities.  Chad lives in Forest City with his wife Stacy and their children Tyler, Hannah and Emma.

  • Deena Lewison

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    Location(s): Forest City,

    Deena has worked for D.K. Arndt, P.C. since 1998. She is responsible for client bookkeeping and payroll processing services. Deena lives in Forest City with her husband Jeff.  They have 3 children.  Zach lives in Wyoming and is a youth pastor.  Alec is in the Air Force and lives in Florida with his wife Nicole.   Molly is a junior at Buena Vista University in Storm Lake, IA.  Deena  & Jeff enjoy traveling and spending time with their children.  

  • Lori Rauk

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    Location(s): Forest City,

    Lori has been with D.K. Arndt, P.C. since 1998. She is responsible for client bookkeeping and payroll processing services.  Lori lives on an acreage outside of Forest City with her husband Jeff.  She enjoys spending her time with their children: Mathew and Danialle, Alexandra and Bo, and granddaughter Kaylee. Her hobbies include her farm animals, gardening, reading and trash to treasure redo’s.

  • Samantha Dugan, CPA

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    Location(s): Forest City,

    Sam graduated from the University of Northern Iowa with a bachelor’s degree in Accounting and a minor in Ethics. After graduation she obtained her CPA license. Sam has experience in bookkeeping, payroll services, tax preparation, and tax planning for a variety of clients. She truly enjoys the relationships formed with clients and being able to help them focus their efforts on what they do best. Over the years Sam has been involved in a number of organizations in the community. She is currently a member of the Winnebago County Fair Board. Sam grew up on a farm near Thompson, which is where she now resides with her husband and infant son. She has a small and unique livestock farm, specializing in raising heritage pigs. In her free time, she enjoys spending time with her family and step-daughter, working with her animals, reading, and eating delicious meals prepared by her husband.

  • Nicole Determann

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    Location(s): Forest City,

    Nicole has joined the D.K Arndt, P.C. team as Executive Administrator. Her duties will cover a wide range of duties including scheduling, bookkeeping, payroll, expenses, and assisting with the management of the firm. In her spare time Nicole enjoys spending time with her family and friends. Her little family includes her husband, Nicolas, and their three kids, MacKenzie, Brantley and Asher. As a family they like to be outdoors hiking, camping and sitting by the fire. When they aren’t spending time outside, they are enjoying movies or playing games. If Nicole isn’t watching her kids’ activities you can find her with a good book or baking. Nicole also keeps busy with her church teaching Promiseland and most recently has become a board member of BrickStreet Theatre.

  • Penny Weaver

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    Location(s): Garner,

    Penny joined D.K. Arndt, P.C. in 2017. She is responsible for client bookkeeping and payroll processing services. Penny lives in Garner, enjoys traveling and spending time with her 2 children. Jordan is an iOS engineer in Orlando, Florida. Autumn is a Senior/Cheerleader at Upper Iowa University majoring in Secondary Education.

  • Ray Waddingham, CPA

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    Location(s): Garner,

    Ray has been working in the field of public accounting for the past twenty-nine years with a primary emphasis in individual and business income taxes, and small business accounting. He joined DK Arndt, PC in 2005.

  • Betty L. Nash, CPA

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    Location(s): Belmond,

    Betty joined D.K. Arndt P.C. in October 2010 and passed her CPA exams by May 2011. She earned her B.A. in Accounting with highest honors from the American Institute of Business, Des Moines and also holds an Associate Degree in Computer Programming. Betty brings a vast amount of experience in employer taxes as well as business financial reporting to the firm. She is an active member of the Belmond community, financial advisor on the New Lyric Theatre Board, and is a lector in her parish. Some of her hobbies, in addition to family time, include biking, kayaking, and reading. She and her husband, Todd, have two sons (Derek and Jeremy) both of whom are Engineering Students at Iowa State University in Ames.

  • Cathy Willms

    Location(s): Belmond,

    Cathy has been associated with the Belmond office for over 15 years. She is responsible for client bookkeeping and payroll processing services. Cathy and her husband Vince have five grown children, eight grandkids, and live in Belmond.

  • Adam Helm

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    Location(s): Titonka,

    Adam Helm joined DK Arndt P.C. in 2012 when DK Arndt acquired TSB Bank's tax practice in Titonka.  Adam worked as a tax preparer for TSB since 2007 specializing in individual farm tax returns.  In 2006, Adam graduated with B.A. in Finance from Waldorf College.  Outside of tax season, Adam and his wife Trista farm in the Woden and Crystal Lake areas.  They have two daughters, Hailey and Reagyn.

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