My Team

I take customer service very seriously. So does my entire Team. 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.


Fiona Yonan

Agent Assistant
Office 847-663-7000

As an Agent Assistant, I share responsiblities for our team in servicing our client's needs. With a customer service and sales background, my first priority is to ensure your highest quality experience.

Feel free to call or email me with questions or concerns.


Lynn Louise Zaransky

Office 847-663-7000
Mara Lazda

Mara Lazda

Administrative Assistant
Office 847-573-6824
Kathryn G Dieter

Kathryn G Dieter

Fax 847-663-7000

Katie Dieter has been with Northwestern Mutual since 2007 and serves as my Financial Planning Consultant.  In this role Katie helps me deliver financial security to my clients by developing personalized financial plans based on my client’s specific goals.  Katie also consults with me to provide investment product solutions as part of our long-term strategy which is consistent with the goals outlined in the plan.  Katie holds the Series 7, 63, 66, 9 & 10 and is fully licensed in life, health and disability insurance.  Katie has degree in Sociology and a minor in Mathematics.


Bradford T Graham, CLU®, RHU®, CLTC®
Financial Representative

Physicians Nationwide


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