Keltgen, a certified marketing executive, is working on a Ph.D. from the University of South Dakota. She teaches introductory marketing courses as well as business writing, healthcare marketing, advertising, promotions, sports marketing and personal selling. She has written and published case studies and articles on experiential and service learning as well as relationship marketing and healthcare marketing. Keltgen's advanced marketing students regularly research and write promotion plans for local non-profit and for-profit organizations as part of Augustana College's focus on community service. Current research, which follows her specialty in healthcare marketing and management, focuses on generational differences in the medical workplace. She serves on the college's Curriculum Council.