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Agency Phone: 906-632-3337

After Hours Contact

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Our Staff

Administrative Staff

Lynette Culbertson

Lynette Culbertson
  • Graduated from Roosevelt High School in Portland, OR
  • Moved to Michigan in 1998
  • Licensed in Insurance in 1999
  • Became a Partner of Superior Insurance Agency in 2009

Commercial Lines Division

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John Madigan
  • Born in Munising Michigan in 1959, John Madigan has always been committed to the residents of the Upper Peninsula of Michigan. John graduated from Northern Michigan University in 1982 and taught high school until joining an insurance agency in 1995. He has been selling and servicing the insurance needs of the Eastern Upper Peninsula residents since that time. Currently an owner of the Superior Insurance Agency of Sault St. Marie he continues his commitment to his current clients and is always willing to help anyone with insurance needs.
  • John has served on many boards of directors and state agencies over his career.
  • He is married to Kristin Madigan and they have on daughter who is currently in graduate school.

Bill Goldenbogen

Bill Goldenbogen
  • Graduated in 1979 from Holy Cross High school, Marine City, Michigan
  • Graduated in 1984 from Wayne State University, Detroit Michigan with a Bachelor of Science in Business Management.
  • Over 28 years in the sales industry and also a licensed Realtor.
  • Moved to the Upper Peninsula in 2008 to become a partner in the Superior Insurance Agency
  • Licensed in Property, Casualty, Life and Health Insurance.

Kasey Falkenhagen

Kasey Falkenhagen
  • Licensed in Property & Casualty
  • Born and raised in Sault Ste Marie, MI
  • Graduated Sault Area High School
  • Enjoys spending time with her son and anything to do with the outdoors.
Personal Lines Division

Becky Hoornstra

Becky Hoornstra
  • Life long resident of Sault Ste Marie. A graduate of Sault Area High School
  • Attended Lake Superior State University where she took courses in Paralegal studies.
  • Joined the Superior Insurance Agency in April of 2009. In 2010 she received a Property and Casualty license.

Ashley Bassett

Ashley Bassett
  • Moved to the Upper Peninsula in 2009
  • Graduate of Sault Area High School
  • Studied Business, Sales & Marketing at Lake Superior State University
  • Joined Superior Insurance Agency March 2019
  • Licensed in Property & Casualty

Employee Benefits Division (Life and Health)



Carrie Lemaster
  • Born in Sault Ste Marie Ontario.
  • Graduate of Sault Area High School and went on to earn an Associate's Degree from the University of Phoenix.
  • Carrie has been with the Superior Insurance agency since 2012
  • Licensed in Life & Health as well as Property & Casualty
  • Carrie became a Partner of Superior Insurance Agency in 2018
Maria (Lee) Brown Maria (Lee) Brown
  • A graduate of Sault Area High School and Lake Superior State University
  • Has lived in the Sault Ste Marie area for over 30 years
  • Licensed in Life and Health Insurance for both Personal and Commercial Group
  • Joined Superior Insurance Agency in 2014
Denise Brummett Denise Brummett
  • Relocated to Sault Ste. Marie from New York State in 2007
  • Worked in the health care industry for many years
  • Joined Superior Insurance Agency in 2016
  • Provides a personalized approach to employee benefits
  • Acutely focused on education for both her clients and herself
  • Prides herself on building lasting relationships with her clients
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