— our staff

Our experienced leadership team is committed to you

RDR has been a leader in imaging for over 40 years. With over 200 years of combined experience, we have continuously refined our mission to care, heal, teach and discover.

RDR Board of Directors

  The Board of directors includes dedicated community leaders who are selected on the basis of their expertise and experience in a variety of areas beneficial to RDR. Our current Board of Directors includes doctors that oversee RDR’s work and help to ensure that our mission is upheld.

Darrin Spoden, D.O.



Nathan Danielson, D.O.



Brad Hilger, M.D.

Vice President


Leslie Hartman, M.D.

Vice President, Department Chair


James Dickinson, M.D.

Vice President

Providing daily support to the RDR team.

Our executive management team is committed to creating a healthy community and works to establish our vision and mission. Our team ensures that RDR’s staff and doctors maintain the highest quality health care and provide the best possible patient experience.

Mary Hondl


Mary Hondl is the Chief Executive Officer of RDR and has been a leader in our organization since 2001. Mary has a Bachelor of Arts degree in Business Management from St. Scholastica and an Executive Masters of Business Degree from the University of St. Thomas. With 20+ years of experience in healthcare administration, she has been invaluable to the company’s growth and financial management.

Mark Laliberte

Executive Director

Mark Laliberte joined RDR’s leadership team in 2021. Mark has a Bachelor of Arts degree in Biology and a Masters of Business Degree, both from the University of St. Thomas. Mark is a former government affairs and health policy professional with experience that also includes the clinical and business practices of care providers, payers and clinical research study partners.

Cassie Fisher

Director of IT & Billing Systems

Cassie Fisher joined RDR’s leadership team in 2018. Cassie has a Bachelor of Science Degree in Psychology from Moorhead State University. Cassie brings over ten years of medical management to RDR. As Director of IT & Billing Systems, Cassie provides vital knowledge and expertise critical to the operational success of our organization.