Derek A. Nelsen | Sioux Falls Insurance Lawyer
Premium Member
Verified Highlights
Main Office
7521 S Louise Ave
Sioux Falls, SD 57108
Office Hours
Other Locations
Proudly serving Sioux Falls, South Dakota, and the surrounding areas.
Fuller, Williamson, Nelsen & Preheim
About Derek
After graduating, Derek clerked for the Honorable Justice Judith Meierhenry of the South Dakota Supreme Court from 2009 until 2011. As a law clerk, Derek reviewed over 1,000 appellate briefs, heard approximately 100 oral arguments, and assisted the South Dakota Supreme Court in writing its decisions. He joined the firm after his clerkship ended.
Since joining the firm, Derek has developed a comprehensive litigation practice with a focus on insurance-based and insurance bad faith cases. Derek has tried jury trials across South Dakota, given oral arguments before the South Dakota Supreme Court, and has appeared regularly in South Dakota’s Federal Courts. Derek’s advocacy skills have earned him a reputation for excellence, which has resulted in his retention by other attorneys to assist with high-value and high-stakes cases at trial and on appeal. Derek is admitted to practice in South Dakota, Minnesota, the Eighth Circuit Court of Appeals, as well as the Flandreau Santee Sioux Tribal Court. Derek is a member of the American Bar Association, South Dakota Defense Lawyers Association, South Dakota Trial Lawyers Association, Second Judicial Circuit Bar Association, and Defense Research Institute. Derek is AV-Preeminent rated for high professional ethics and legal abilities.
Please call today to further discuss my fee structure.
Experience
Partner
Fuller, Williamson, Nelsen & Preheim, LLP
2011-Present
Sioux Falls, South Dakota
Law Clerk
Honorable Justice Judith Meierhenry, South Dakota Supreme Court
2009-2011
Admission
Minnesota
2011
South Dakota
2010
Education
University of South Dakota School of Law
J.D.
2009
Recognitions & Achievements
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Member | U.S. District Court, District of South Dakota
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Member | American Bar Association
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Member | Second Judicial Bar Association
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Member | South Dakota Defense Lawyers Association
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Member | South Dakota Trial Lawyers Association
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Member | Phi Beta Kappa
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Gavel Award University of South Dakota2009
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Sterling Honor Graduate University of South Dakota2009
Additional Info
Fuller, Williamson, Nelsen & Preheim Highlights
Insurance, Litigation, Employment, Personal Injury, Government
Mr. Derek A. Nelsen has been a Premium Member since October 03, 2025.
Many of our longest-standing Premium Members have built strong reputations over time. We highlight their experience to help you make informed choices with confidence.