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About me

I joined the Zimmer and Duncan law firm as an associate attorney on May 11, 1992. I became a partner in the firm and we became Zimmer, Duncan and Cole in 1996. I focus primarily on trials and litigation.


I have tried to verdict 24 jury trials and have tried hundreds of court trials. I have also briefed and argued 7 reported cases to the South Dakota Supreme Court and 1 reported case to the United States Court of Appeals for the Eighth Circuit.


Photos and videos

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Practice areas


  1. Wills: 20%
  2. Personal Injury: 20%
    2 years
  3. Criminal Defense: 20%
    2 years
  4. Litigation: 20%
    2 years
  5. Car Accident: 20%



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Attorney endorsements

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  • Drew Duncan

    I endorse this lawyer.


    Drew Duncan Personal injury Attorney
    Relationship: Co-worker

  • Dennis Duncan

    I endorse this lawyer.


    Dennis Duncan Administrative law Attorney
    Relationship: Co-worker

Contact info

Zimmer, Duncan & Cole

5000 S. Broadband Lane, Suite 119
Sioux Falls, SD, 57108


SDAuthorized to practice law199201/06/2014
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Work experience
TitleCompany nameDuration
PartnerZimmer, Duncan & Cole, LLP1992 - Present
Association namePosition nameDuration
Turner County States Attorneypart-time prosecutor1996 - 2000
Legal cases
Case nameOutcome
Trial CounselA case that ended up in the United States Supreme Court, with Mr. Cole's client ultimately prevailing.
See all legal cases 
Publication nameTitleDate
E-Book From Zimmer, Duncan and Cole7 Deadly Sins That Can Wreck Your Injury ClaimN/A
E-book From Zimmer, Duncan and ColeA Step-by-Step Guide to Will Contest CasesN/A
School nameMajorDegreeGraduated
University of South Dakota School of LawN/AN/A1992
South Dakota State UniversityN/AN/A1988