Our Team
Dan Dettlaff, CPFA
Wealth Management Advisor, has been in the financial services industry working with professionals and business owners for over 30 years. He started his practice as a college intern in 1986 in Oshkosh, WI. Graduating in 1987, Dan moved back home to the Milwaukee area and continued a full time practice.
Dan, his staff and associates take a very holistic approach in their strategy using a macro-economic model much like an architect uses a blueprint. "In building ones' financial life for themselves and for the security of their family, we start with what we call a financial blueprint. With that, we can move forward and work together with all of our clients' team of professionals-accountant, mortgage broker, attorney, etc...to take care of their needs and implement their strategy. It's the right hand knowing what the left hand is doing-approach."
Dan served on the Board of Directors for the National Exchange Clubs in Milwaukee, West Suburban Christian Academy and the Fellowship of Christian Athletes. Dan currently serves on the Board for The Starting Point Project and Steeplechase Homeowners Association. Dan is a member of the National Association of Financial Advisors (NAIFA) and member of FINESCA, for Financial Securities Professionals. Dan is active in men's ministry within his local church. He and his family of five children reside in Pewaukee, WI.
Gwendolyn Beck
Licensed Agent - Client Services Specialist
Gwendolyn “Gwen” Beck is a valued new addition to Dettlaff & Company, joining our team in the summer of 2025. A graduate of the University of Wisconsin–Whitewater with a degree in International Studies and Public Diplomacy, Gwen brings a strong academic background, a dedicated work ethic, and a client-first mindset to every interaction.
Born and raised in the Milwaukee area, Gwen has deep roots in the community. She brings over 13 years of professional experience to the firm, having previously served customers at American Family Insurance for more than seven years and held leadership roles in restaurant management for six years. Her knowledge of the insurance industry, coupled with her commitment to outstanding client service, makes her an asset to both our team and the clients we serve.
Outside the office, Gwen is an avid outdoor enthusiast. Whether it’s riding snowmobile trails in northern Wisconsin, exploring UTV routes, or enjoying time on the water at a nearby lake, she’s always on the move and embracing all that Wisconsin’s outdoors have to offer.
Nicholas Dettlaff
Intern – Business & Finance
Nicholas “Nick” Dettlaff is currently in his second year as an intern at Dettlaff & Company, where he is gaining valuable, hands-on experience in multiple areas of the business. A student at the University of Wisconsin–La Crosse, Nick is on track to graduate in the spring of 2026 with a degree in Business and Finance.
Originally recruited as a freshman football player at UW–La Crosse, Nick brings the same discipline and drive from the field into the office. His internship at Dettlaff & Company has allowed him to develop practical skills across marketing, sales, insurance, investments, communications, and client service—all preparing him for a strong start to his professional career after graduation.
Nick’s eagerness to learn, combined with his well-rounded exposure to the industry, positions him for future success and growth in the financial services field.
Isabella Swanson
Bookkeeping & Accounting Specialist
Isabella “Bella” Swanson has been an integral part of Dettlaff & Company for several years, beginning her journey with the firm as a college intern. An honors graduate from the University of Minnesota, Bella earned her degree in Business Marketing and Education—graduating with a perfect academic record, never receiving a grade lower than an A.
At Dettlaff & Company, Bella specializes in bookkeeping and accounting. Her behind-the-scenes work organizing, recording, and analyzing financial data plays a critical role in ensuring the smooth operation of the firm. Bella’s attention to detail and commitment to accuracy help keep the business on track, enabling the team to better serve clients and support long-term growth.
Outside of the office, Bella stays busy with her young family, including her new baby boy. She enjoys soaking up Wisconsin summers on the lake, boating, going for walks, and spending quality time with her loved ones.
“I’m proud to contribute to the success of Dettlaff & Company Incorporated.”
Sheila Elkins
Commercial Insurance Specialist
Sheila Elkins is the backbone of Dettlaff & Company’s commercial and business insurance operations. With over 40 years of experience in the commercial insurance industry, Sheila brings an unmatched depth of knowledge and a commitment to excellence in serving the business owner marketplace.
Highly detail-oriented and client-focused, Sheila understands the many complexities of the commercial insurance world. As she puts it, “There are so many facets to the Business Insurance Market—one really needs to know the ins and outs of the industry to properly serve the Business Insurance marketplace.” Her expertise ensures that every client receives comprehensive, accurate, and tailored coverage solutions.
Outside the office, Sheila enjoys quality time with her family. During the summer months, you’ll often find her tending to her many flower pots—a true passion for her and a peaceful contrast to her busy professional life.