Dr. Regina Ertz And Dr. Dewey Ertz

Regina S. Ertz, Ph.D. is an enrolled member of the Cheyenne River Sioux Tribe in north central South Dakota and is a licensed health service psychologist. She started her work with school-aged children and adolescents who have engaged in problematic sexual behaviors (PSB) when she completed her internship/residency with the University of Oklahoma Health Sciences Center (OUHSC). Dr. Ertz is currently working at an outpatient tribal clinic located in central Oklahoma and has continued working with American Indian children/youth who have engaged in PSB. It is not uncommon for these issues to be highly present within Native communities as this behavior has been present within intergeneration trauma. American Indian cultural and traditional teachings/methods are often incorporated in services, if appropriate. Dr. Ertz is honored to be able to provide effective evidenced-based treatment for children/youth and their families to offer healing from this cycle of PSB and promote the concept of wellbeing.


Dr. Dewey Ertz began providing mental-health services in 1974. He began working with children and adolescents who display problematic sexual behaviors in 1985 and he gained his clinical membership in ATSA during 1994. Treatment has been provided to both victims of abuse and abusers by Dr. Ertz. He is the current Chairperson of the Great Planes Region Indian Health Services Institutional Review Board (IRB), and he is a member of the National Indian Health Service IRB. Dr. Ertz is an enrolled member of the Cheyenne River Sioux Tribe in northcentral South Dakota. One of his current research interests is to develop and validate culturally appropriate interviewing techniques for American Indian children and adolescents who are victims of inappropriate sexual activities and/or individuals who display problematic sexual behavior.