JMR Financial Group is staffed by a skilled and talented team ready to support your financial future. Whether you need a financial planner, investment advisor, or support of your QuickBooks software, JMR Financial Group has you covered. We proudly serve Superior, WI, Duluth, MN, and the entire Twin Ports.

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JMR Financial Group’s Leadership Team

Nathan A. Madill, APA, CFP®, IAR


Nathan A. Madill serves as the President and Secretary of JMR Financial Group and leads the firm’s investment management, financial planning and employee benefits departments.  

As one of the few individuals in Minnesota to hold an Accredited Pension Administration (APA) from the National Institute of Pension Administrators (NIPA), Nathan is well-equipped to provide clients and retirement plan participants with expert financial strategy and service. For the past 25 years, he’s worked diligently to increase each of his clients’ net worth and ensure their distinctive financial goals are met. 

Importantly, Nathan is a Certified Financial Planner, a professional designation awarded to advisors who prove their fluency in financial planning through rigorous coursework, hundreds of hours in continuing education, and an exhaustive examination. 

Nathan’s B.S. in accounting from the University of Minnesota Duluth and his Series 65 Uniform Investment Advisor license serve as the solid foundation for his leadership role at JMR Financial Group. He is a proud graduate of the Blandin Community Leadership Program, an in-depth course aimed at helping local leaders build and sustain healthy communities. As an advocate for the expansion of Twin Ports-based businesses and non-profits, Nathan is a member of the Hermantown and Superior Chambers of Commerce. 

When not working, Nathan enjoys hiking with his wife, Karly. Their favorite trails include Angel’s Landing and The Narrows at Zion National Park. Together, they’ve explored breathtaking landscapes from Canada’s Banff National Park to the United States’ Glacier and Yellowstone National Parks. Nathan also enjoys relaxing at the lake and spending time with his children Trent, Megan, Lauren and Bode. As a family, they mountain bike, golf and play very competitive games of pickleball. 

Nathan’s favorite quote speaks to his innovation in leadership: “Do not go where the path may lead, go instead where there is no path and leave a trail.” – Ralph Waldo Emerson 

Robin L. Rosenbaum, CPA, MS


Robin L. Rosenbaum serves as the Vice President and Treasurer of JMR Financial Group and leads the firm’s accounting, tax, compliance and payroll departments. 

As an experienced and meticulous member of the leadership team, she leverages her strength and skillsets to support JMR’s business, non-profit and individual clients with accurate and exhaustive financial services. For more than 15 years, she has supported hundreds of clients in improving their processes, performance and bottom-line results – with many of those years spent as the Principal of Rosenbaum Business Consulting, LLC. Her valuable and trusted experience in executive operations and both private and public accounting allows her to support organizations as they optimize efficiencies, strengthen internal controls and reduce costs.  

Robin is a Certified Public Accountant (CPA) with active licenses in Minnesota and Wisconsin. She holds two degrees from the University of Wisconsin–Superior – a B.S. in economics and a second in accounting. She also earned a master’s degree in organization and management from Minneapolis’ Capella University. 

The foundation of Robin’s career has been laser-focused on continued professional development. She is a proud member of the American Institute of Certified Public Accountants, the Minnesota Society of Certified Public Accountants, the Wisconsin Institute of Certified Public Accountants and is a graduate of the Superior/Douglas County Leadership Program. 

Robin lives in Superior and spends as much time as she can outdoors – walking, gardening, boating and listening to outdoor concerts. For Robin, winters are dedicated to travel, reading and movies. 

Robin’s favorite quote is one that many women in leadership roles can agree with: “Strong women don’t have ‘attitudes,’ we have standards.” – Marilyn Monroe  

Zephrina Cazaubon, CPA, EA


Zephrina Cazaubon is the Founder of ZMC & Associates and its managing partner, in addition to being an accomplished financial services professional. 

Her robust 20 years in the financial services industry stems from her experience providing both in-house and outsourced CFO services – in addition to the establishment, growth and development of several accounting and financial businesses. Zephrina’s success stems from her ability to build teams based on competence, capabilities and shared core values.  

ZMC & Associates provides payroll, and accounting services, as well as tax planning and preparation, retirement planning and insurance services – aligning well with JMR Financial Group’s offerings. Both organizations are aptly prepared to serve the other to ensure excellent customer service. 

Prior to forming ZMC & Associates, Zephrina spent 15 years as Chief Financial Officer for a global transportation and logistics company. Realizing that many companies in growth phases are not yet ready to hire financial leaders at the c-suite level, she was inspired to launch her own business and provide that as an outsourced service. Today, she transforms her experience into guidance and oversight for companies in a wide range of industries. 

Zephrina is a Certified Public Accountant (CPA) and a member of the American Institute of Public Accountants (AICPA). Her B.S. is in Accounting from the University of Indiana, and she has also earned an accounting professional certificate from McGill University, Montreal, Canada.  She lives and works in Atlanta, GA where she manages a distributed team of financial experts helping clients across the United States. 

Zephrina lives in Atlanta Georgia.  When not working, she enjoys spending time with her family, traveling, and taking part in charitable activities.   

Zephrina’ s favorite quote speaks to her passion in helping others: “Life is really about creating meaning – and meaning doesn’t come from what you get; it comes from what you give –  Tony Robbins. 

Gail Woronick


Gail Woronick serves as the Chief Operating Officer of ZMC & Associates, providing its partner JMR Financial Group with strategic and operational expertise.  She works to help both organizations leverage technology, upskill staff and maintain a culture of accountability – all to further the leadership team’s high standards of quality and excellence for its valued clients. She has over 20 years of experience helping firms optimize people, processes and systems 

Gail attended Rutgers University as undergraduate majoring in business management, and since obtained an MBA from the same reputable organization. Prior to working for ZMC & Associates, Gail implemented business operating systems for many organizations – from startups to firms with $40mm in revenue – supporting their efforts to level-up and attain growth and success.   

Gail lives in Los Angeles, CA with her husband Walter and her adorable Doberman Sasha. When she is not working, she enjoys international travel, high-quality cuisine, and cardio kickboxing. 

Gail’s zest for continued personal and professional growth is summarized by the paraphrasing of some of Angela Duckworth’s core philosophies: “You must get used to living in the uncomfortable zone, continually trying new activities, reading and learning daily, and asking for help – while feeling the hurt of having some losses and failures along the way. It’s the journey that successful people have learned to enjoy.”