Psychology Post-Doctoral Fellowship Faculty

Raymond List, PhD, is a clinical psychologist who has been practicing in the Gundersen Neuropsychology Unit since 2008. He earned his doctorate from University of North Dakota in 1996 and became a licensed psychologist in Wisconsin in 1997. Dr. List received additional training in clinical neuropsychology through the Fielding Institute in 2002. His areas of clinical interest are adult neuropsychology including TBI, memory concerns, dementia and Parkinson’s disease.

Bryan Kolberg, PsyD, ABPP, is a rehabilitation psychologist who staffs the acute rehabilitation unit while also maintaining an outpatient clinic practice. He is board certified in Rehabilitation Psychology. He has been with Gundersen Health System since 2013. He earned his doctorate from The Chicago School of Professional Psychology in Chicago, Ill., and completed his APA-accredited, pre-doctoral internship at The University of Miami/Jackson Memorial Medical Center. He then completed a two-year post-doctoral residency at Rancho Los Amigos National Rehabilitation Center in Downey, Calif. Dr. Kolberg's areas of clinical interest are in neuropsychological evaluation and management of individuals with stroke or cerebrovascular disease, traumatic brain injury, hypoxia and other medical disorders, in addition to psychological evaluation and intervention with individuals with spinal cord injury. 

Savannah Whitemarsh, PsyD, LP, is a licensed clinical psychologist working in Internal Medicine. She has been with Gundersen Health System since 2018. She earned her doctorate from the Wisconsin School of Professional Psychology in Milwaukee, Wisconsin and completed an APA-accredited pre-doctoral internship at the Oscar G. Johnson VA Medical Center in Iron Mountain, Michigan. She then completed a post-doctoral fellowship in health psychology at the Louis V. Stokes VA Medical Center in Cleveland, Ohio. Dr. Whitemarsh’s areas of clinical interests include primary care/behavioral health integration, with the aim of providing short-term, solution-focused interventions to patients (18+), aiding in chronic disease management, mental and behavioral health and life skills. Dr. Whitemarsh also conducts preliminary testing for adult ADHD. 

Katherine Cleven, PsyD, is a licensed clinical psychologist and behavioral health consultant working in Family Medicine at the Gundersen Tomah Clinic. Dr. Cleven is passionate about the integration of mental health treatment in our healthcare systems and communities. Dr. Cleven earned her doctorate in Clinical Psychology from the Wisconsin School of Professional Psychology. She also completed a year-long, APA-accredited pre-doctoral internship with Rogers Behavioral Health in West Allis, Wis. While there, she worked with children and adolescents, ages 5-17, in their Child and Adolescent Day Treatment Unit. She gained post-doctoral experience and training with the Wisconsin Department of Corrections before coming to Gundersen in 2023. Dr. Cleven’s areas of interest include primary care behavioral health; Dialectical Behavior Therapy; behavioral disorders; and providing education and training about mental health in our rural communities. She holds licenses to practice as a psychologist in Wisconsin, Iowa and Minnesota.