Great Plains Claims is a multiple line insurance adjustment company based out of Jamestown, North Dakota, whose adjusters Great Plains Claims, Jamestown, North Dakota, NAIIAare dedicated to prompt, in-depth investigations. With over 75 years of combined experience, the professionals at Great Plains Claims of Jamestown understand the importance of each claim and have the expertise to see it through its conclusion.


We work with a large number of insurance companies, including: AAA, Allianz Federated, Utica, Auto Owners, EMC/Dakota Fire, Phoenix Aviation, Chartis, North Star Mutual, North Dakota Insurance Reserve Fund and others.


We are also members of the National Association of Independent Insurance Adjusters.  This membership requires that we adhere to a code of ethics which can be found at their website.

Our Staff

RICHARD MANGNALL, C.P.C.U. – Richard Mangnall graduated from NDSU in Fargo, ND with a B.S. Degree in Business Economics with a Minor in History.  He was quickly offered a job at GAB Business Services, Inc as an Insurance Adjuster, and went through their rigorous Adjuster Training Program.  There he gained expertise in Property, Automotive, and Casualty adjusting.  He was awarded his Chartered Property and Casualty Underwriter (CPCU) designation in 1983.  He is also a Fellow of the International Insurance Adjusters Association, and a member of the Honorable Order of the Blue Goose International.

JOHN J. FLUTH – John J. Fluth graduated Southern State College in Sprinfield, SD with a B.S. Degree in Business Administration with a Minor in Mathematics.  After serving in the Air Force he became employed by GAB Business Services, Inc where he underwent extensive training in Auto Repair Estimating, Casualty, Aviation, Motorcycle Repair Estimates, as well as completing the GAB Senior Insurance Adjuster (S.I.A.) program.  He has since garnered expertise in Advanced Arson Investigation, Flight Ground School, and Law Enforcement Photography.