My Team

I take customer service very seriously. So does my staff. Together, we are committed to providing exceptional customer service to all of our clients.

If you need to schedule an appointment, make changes to your policy, submit a claim or request any other service, please let us know. We will respond promptly.

Drew Andrew Walters

Drew Andrew Walters

Office 319-351-5075

Drew began his career with Northwestern Mutual in January 2013.  He attended the University of Iowa receiving a B.A. in American Studies. Drew currently holds his Series 6, 63 as well as Life, Accident and Health licenses and is currently pursuing his RICP designation. 

Drew assists Denny’s team with the creation, proposal, and management of financial plans.  He also assists with:

  • Policy Changes and Information changes
  • Billing and Premium Payments
  • Medical Exams and Underwriting  

Drew lives in North Liberty and in his free time enjoys spending time with friends, family, cooking, volleyball, Ultimate Frisbee, running, cycling and golf.  While staying active he is also an avid Hawkeye fan and enjoys traveling.

Colleen M Brown

Colleen M Brown

Associate Financial Representative
Office 319-351-5075

Colleen began with Northwestern in 2008 and finds an enormous passion in helping provide Financial Security & Planning education and information to clients as part of the Visser team.  A University of Iowa graduate, Colleen has obtained her Chartered Life Underwriter (CLU®) designation.

Native to the Quad-Cities and now Coralville resident, Colleen’s time outside work is immersed in family, including husband Fred, their 5 teenagers, Hunter, Alex, Amanda, Ava & Drake, and daughter, Elizabeth who resides with her family in Fred' s native home state, NY. Between the kid’s sports & activities, and running the household, Colleen carves out precious time traveling to see family in and outside Iowa, loves walking, swimming, biking and participating in local 5k’s, 10k’s or other organized events, (i.e. Pig-man Triathlons and the Army challenge).


Dennis G Visser, CLU®, ChFC®

Financial Representative

  • Office 319-351-5075 ext. 7018

To learn more about Northwestern Mutual Investment Services, LLC and its financial representatives, visit: FINRA BrokerCheck