Dr. Marleen is licensed in Oregon and Washington as a Naturopathic Physician and in Oregon as an acupuncturist. She has been in practice since 1997, and relocated to Portland from the Seattle area in 2009. She has been an herbalist since 1989 and has a Bachelor of Science from Cal Poly State University, and a Masters degree in Exercise Science from Penn State University. She graduated with a Doctorate in Naturopathic Medicine in 1997 from Bastyr University where she also received a Master's in Acupuncture in 1996. She did her residency at Bastyr's Center for Natural Health and was clinical faculty there for a year afterward.

Dr. Marleen continues to lecture at Bastyr University in Herbal Sciences, Naturopathic Medicine, and Botanical Medicine. She has consulted on several grants for complimentary and alternative medicine and cultural competency at the University of Washington and lectured at the UW's Schools of Nursing and Social Work. She has taught courses in traditional herbal medicines to tribal members at the Port Gamble S'Kallam and Lower Elwa tribes. As a primary care provider, she works with all types of patients and conditions. She believes empowering the patient, individualizing treatment plans, and encouraging the body's own natural healing abilities are essential in the promotion of health.

Outside the clinic she participates in her Lakota Sioux culture and traditions. She was interviewed by the NW Federation of Community Organizations for stories of Native Americans and healthcare in their publication, An American Debt Unpaid, which was presented to the US Congress in 2009.