Sioux Falls Employees
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Nordell Griebel, CPA, Partner Nordell has been in public accounting since 1993. He provides tax,
audit and financial services to clients ranging from small to large businesses and individuals. |
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Mary Pat Mullen, CPA, Partner Mary Pat has worked in the accounting profession for 19 years, including over 10 years
in public accounting. She works in both audit and income tax,
including small business; individual taxation; estates and trusts. |
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Clay Noteboom, CPA Clay joined the firm as an intern in January and returned as a staff
accountant in June 2009. He graduated from USD in May 2009 with his Masters
of Professional Accountancy degree. Clay passed the CPA exam in 2010. |
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Bobbi Bourk Bobbi joined the firm in January 2012. She is a graduate of Northern State University
with a degree in Accounting. |
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Stacie Burch, Staff Accountant Stacie joined the firm in March 2008. She graduated from Augustana
College in 2004 with degrees in Accounting and Business Administration.
She completed her Masters in Business Administration in September 2011. |
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Courtney Lens, Staff Accountant Courtney joined the firm as an intern in January and returned as a staff accountant
in September 2010. She graduated from the University of Sioux Falls in May 2010 with
degrees in Accounting, Business Administration, and Marketing. She is currently working
toward her Masters. |
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Tanya Marhel, Staff Accountant
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Sandy Person, Staff Accountant Sandy joined the firm in 1974. She graduated from Nettleton College.
She works on financial statements, business and individual income tax returns,
and does software setup and help with Peachtree and QuickBooks. |

Tanya joined the firm in 2006. She graduated from Augustana College in 2005
with degrees in Professional Accountancy and Business Administration. She is a
Certified QuickBooks Pro Advisor. She prepares tax returns, financial reports,
assists with audits, and provides other accounting services for small businesses.