WALT SCHAAN, CPA
Email: wschaan@hagakommer.com
Walt is a CPA with 8 years of public accounting experience; plus private industry employment and governmental auditing experiences. His specialties include accounting and tax compliance and preparation services for individuals and businesses in the private sector.
Walt was born in Rugby and grew up on a farm near there. After graduating from the University of Mary with majors in both Accounting and Business Administration, he took a position as a corporate income tax auditor with the ND Tax Commissioner. He has held several managerial positions in both small and large corporations in the private sector; one of which was Vice President–Division Controller for U.S. Home Corporation, a residential developer traded on the New York Stock Exchange.
Walt’s homebuilding position included moves from San Diego to Dallas, Las Vegas and Denver. He and MaryBeth moved back to Bismarck for a CPA position with Capital Accounting in 2010. Walt previously volunteered for finance committee, Treasurer, and prison educator for nonprofits primarily during his 14 years in Denver. He enjoys horticulture and fishing, especially the fall salmon runs at Lake Sakakawea.
EDUCATION
- Bachelor of Science, Accounting & Business Administration - University of Mary, Bismarck, ND
Designations and licensure
- Certified Public Accountant - North Dakota
professional memberships
- North Dakota Society of Certified Public Accountants

STEPHANIE THORP, CPA
Email: sthorp@hagakommer.com
Stephanie Thorp joined Haga Kommer in 2016 and has over 18 years of experience in public accounting. She has experience with individual, corporate and partnership taxes, as well as, bookkeeping, payroll and accounting.
Stephanie is a board member of her township and local Dollars for Scholars chapter.
She enjoys gardening, reading, traveling and spending time with family and friends.
EDUCATION
- Bachelor of Science, Accounting - University of Mary
DESIGNATIONS AND LICENSURES
- Certified Public Accountant, North Dakota
- Notary Public

JESSICA Magilke, CPA
Email: jmagilke@hagakommer.com
Jessica joined Haga Kommer in 2017 as an accountant. She previously worked for Wisian and Breeding, PLLC in Amarillo, TX as an accountant where she gained experience in bookkeeping, payroll and tax preparation.
She enjoys spending her spare time riding and training horses and competing in rodeos throughout the summer.
EDUCATION
- MPA/BA in Accounting - West Texas A&M University - Canyon, TX
- Associate in Agricultural Business/Accounting - Northwest College - Powell, WY

Kelda Rerick, CPA
Email: krerick@hagakommer.com
Kelda joined Haga Kommer, CPAs in 2017. She has 10 years of tax preparation experience. Her main focus is ag taxation and tax planning. She has experience with individual, corporate, and partnership taxes as well as bookkeeping and payroll. She grew up on a farm near Napoleon. She has a husband, Jeff, and three children. She previously worked for AgCountry Farm Credit Services as a Senior Tax Specialist.
EDUCATION
- Bachelor of Science in both Business Administration and Office Management with concentrations in Finance and Accounting from Valley City State University.
Designations and licensures
- Certified Public Accountant - North Dakota
- Member of the North Dakota Society of Certified Public Accountants

Diane Schaff
Email: dschaff@hagakommer.com
Diane joined Haga Kommer in February 2020. She has many years of accounting and audit experience which includes public accounting with Ernst & Young, state government, self-employment and private industry.
In her spare time she enjoys tennis, downhill skiing, gardening, traveling and music. She is married to Mitchell and they have five children scattered throughout the country.
EDUCATION
- Bachelors of Business Administration, Accounting - University of Hawaii Manoa, Honolulu
Designations and Licensures
- Certified Public Accountant, North Dakota
Professional memberships
- North Dakota Society of Cerfied Public Accountants

Scott Hoffman
Email: shoffman@hagakommer.com
Scott joined Haga Kommer in 2017 as a staff accountant and has previous experience with both public and private accounting through past work experiences. He worked at an accounting firm in Mobridge, SD and also was in the accounting department for Harms Oil Company while attending school.
He enjoys spending time outside playing basketball, golf, tennis, and frisbee golf. He also loves spending time with family and friends.
EDUCATION
- Bachelor of Science in Professional Accountancy - Northern State University, Aberdeen, SD.

CARMEN WILL
Email: cwill@hagakommer.com
Carmen joined HagaKommer in 2016 as an Administrative Assistant. She is a Mandan native who previously worked for 18 years at a dental office. Prior to that she taught part-time for a Christian School, and also part-time as a Montessori preschool and daycare aide.
In her free time, she likes to spend time with her family and friends, going to movies, walking, and doing suduko puzzles.
EDUCATION
- Bachelor of Science, Elementary Education with a Mathematics Minor - Dickinson State University
DESIGNATIONS AND LICENSURES
- North Dakota Elementary Teaching License
Rochester Mugumbate
Email: rmugumbate@hagakommer.com
Rochester joined Haga Kommer in 2020. He has several years of Accounting and Auditing experience which includes private industry and state government. In his spare time, he enjoys playing golf, video games, and board games.
EDUCATION
- Bachelor of Business Administration and Management, Accounting - Mayville State University, Mayville
- Master of Business Administration, Project Management - University of Mary, Bismarck