Welcome to Great Lakes Insurance Agency Inc

"Committed to our Customers and our Community"

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About Us

About Us

    Great Lakes Insurance Agency saves you time and money when it comes to looking for an affordable insurance plan that fits your needs. Whether it be Auto, Home, Commercial, Life and Health Insurance, we have many providers and will strive to find the perfect plan for you and your loved ones. Setting up a new plan is easy. From beginning to end, we get to know you and help you find a plan that fits your needs. Making payments for your plans are just as easy. Either walk through our doors and pay through our office, or log on to your provider’s website and pay electronically.

Types of insurance


Personal Insurance

  Auto Insurance Homeowners Insurance Renters Insurance Mobile Homeowners Insurance Flood Insurance Floaters for Jewelry and other items Boat Insurance Motorcycle Insurance Recreation Vehicle Insurance Personal Watercraft Insurance Umbrella Policy More Personal Lines Information  

Commercial Insurance

Artisan Contractors Business Offices Farm or Ranch Insurance Manufacturers Professional Practices Real Estate and Rental Property Retail Stores Services Business Construction Companies Food Service Business Auto Insurance More Business Insurance  

Life & Health Insurance

Hometown Service

That's what sets us apart from our competitors.

Our locally owned and operated agency is located at 124 Main St W. in Ashland, and has been serving the community for years. Great Lakes Insurance Agency strives to offer the thorough and affordable plans you need. We're committed to client satisfaction, and we go out of our way to find the policies that address your concerns. With flexible hours throughout the week, we make it easy to set up a consultation. 

Find out how we can help protect the things you care about by calling us today to schedule an appointment. For our current customers thank you for your business and your trust in our agency. For our future customers we hope you give us an opportunity to earn your trust and business, and look forward to working with you.   Give us a call today for a free quote!

Our Team

David Martinsen

David began his career in the insurance world as a personal lines agent for Rural Mutual Insurance. David worked for Blue Cross Blue shield for many years.  With these experiences David is able to understand and write all Lines (Home, Auto, Commercial, Umbrella Insurance) David along with Laura Martinsen started Great Lakes insurance 20 years ago. 

Laura Martinsen

Laura got her start in the Insurance field 20 years ago when David and her started Great Lakes Insurance. Her knowledge and expertise give her the ablitity to quote and write all lines of insurance (Home, Auto, Commercial,Umbrella and Bonds).

Debra Larson

Debra has 40+ years of experience in the insurance industry. One thing that has remained the same in the last 40 + years is her knowledge and ability to work with property and casualty insurance 

Theresa Jaskowiak

Theresa got her start in the insurance industry with Blue Cross Blue Shield. She has worked as an agent with Great Lakes Insurance for 9 years. Theresa has extensive knowledge in personal lines. Theresa works to find the best coverage for the best rate. 

Brett Martinsen

Brett Martinsen got his start in the insurance industry April of 2017. His area of expertise is in the personal lines (Home, Auto, Umbrellas and also Life). 

Amy Zak

Amy just started with Great lakes Insurance in 2017. Amy's expertise is in business transitions. 

Contact Us

Contact us for a free insurance quote

Great Lakes Insurance Agency Inc

124 Main St W, Ashland, Wisconsin 54806, United States

(715) 682-2086


Monday - Friday: 8am - 5pm

Saturday: Closed

Sunday: Closed