Northwestern Mutual » Member Directory Go back to directory. Add to Address Book. Northwestern Mutual Northwestern Mutual Contact: Trent Lower, Financial Representative Work N14 W23833 Stone Ridge Drive, Suite 400 Waukesha WI 53188 USAwork Cell Phone: 414-403-0518cell Work Phone: 262-333-2199work Work Email: trent.lower@nm.comINTERNET Website: https://www.northwesternmutual.com/financial/advisor/trent-lower/