William C Fisk, CLU®, ChFC®, MBA

Wealth Management Advisor


As a Financial Representative for the Northwestern Mutual Financial Network, I am committed to helping my clients whether they are concerned for their own financial needs or those of their family or business. I don't do it alone. Here you will find a listing of the people who help make it happen.

Together, we stand committed to providing the best customer service possible. If you have a problem or need assistance at any time, please let us know.

Jackie J Ritter

Jackie J Ritter

Associate Financial Representative
Office 517-853-3362

Jackie started with Northwestern Mutual in 2014 and is an Associate Financial Representative for Bill Fisk. Jackie can assist in answering questions regarding billing accounts, making changes to your policies, scheduling appointments and other customer service needs.


Jackie spends her spare time reading, gardening, hanging out with her husband and caring for her horses and dog.


Mary K Croff

Mary K Croff, CLTC

Associate Wealth Management Advisor
Office 517-853-3366

Mary Croff started at Northwestern Mutual in 2001. She is currently an Associate Wealth Management Advisor. She supports all aspects of Bill's insurance and investment practice and thoroughly enjoys getting to know clients on a personal level.

She is happy to assist with any investment related questions or requests.

In her free time, she enjoys spending time with her daughter, teaching water fitness classes, singing in her church choir and helping with the youth group, as well as hanging out with her friends.


Paige C Bentler

Paige C Bentler

Associate Financial Representative

Paige Bentler started with Northwestern Mutual in 2017 and is an Associate Financial Representative for Bill Fisk. Paige is a recent graduate from Grand Valley State University and is eager to assist clients with the following:

  • Scheduling
  • Navigating the NM client website
  • Underwriting
  • Customer Service 

Paige spends her free time hanging out with family and friends, playing with her dog, attending concerts, and watching Detroit sports. She especially enjoys watching hockey and closely follows the Detroit Red Wings and the Grand Rapids Griffins.


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