New Members of DLF Board of Directors Introduced
Dan Lewis Foundation
Photo of Dr. Kim Gorgens

Dr. Kim Gorgens is a board-certified rehabilitation psychologist and Professor of Psychophysiology, Clinical Neuropsychology and Psychology of Criminal Behavior at the University of Denver. She manages a large portfolio of brain injury related research and has lectured extensively on those issues around the world. She has a 2010 TED talk on youth sports concussion and a 2018 TED talk on brain injuries in criminal justice with 3.5M views. She has been interviewed on CNN with Anderson Cooper, NPR, and on 20/20 and her work with brain injuries has been featured in USNewsNewsweek, the EconomistPeople Magazine, and more. She has a small forensic neuropsychology practice with juvenile and death penalty cases and is active in legislative and policy development around best practices in brain injury. Her research studies the reported injury history, cognitive function, and brain biomarkers of all vulnerable populations including young and older athletes, probationers and inmates, persons who are unhoused, and women who have been exposed to interpersonal violence.

Lisa A. Brenner, Ph.D., is a Board-Certified Rehabilitation Psychologist, and a Professor of Physical Medicine and Rehabilitation, Psychiatry, and Neurology at the University of Colorado, Anschutz Medical Campus. Dr. Brenner is a Senior Clinical Investigator at the Department of Veterans Affairs Rocky Mountain Regional Medical Center. She co-leads the VA Brain Health Coordinating Center (BHCC) and the Military and Veteran Microbiome Consortium for Research and Education (MVM CoRE). She is the past Chair of the International Brain Injury Association and a past President of Division 22 (Rehabilitation Psychology) of the American Psychological Association (APA), as well as an APA Fellow. She serves as an Associate Editor of the Journal of Head Trauma Rehabilitation. Dr. Brenner is a leading expert in the field of traumatic brain injury and comorbid psychiatric disorders. She has over 250 peer-reviewed publications, participates on national advisory boards, and has co-authored a book titled: Suicide Prevention After Neurodisability: An Evidence-Informed Approach. She is also a Co-Editor of the APA Handbook of Rehabilitation Psychology (3rd Edition) and is the current Editor of the Oxford University Press Academy of Rehabilitation Psychology Series.

Photo of Lisa A. Brenner, Ph.D.,
Two women embrace, comforted. A man watches from a separate chair. Interior, daytime.
By Hal Lewis December 5, 2025
My daughter, currently nearing completion of a graduate program in counselling, recently introduced me to the term “ambiguous loss”. This term applies to a loss that is unclear and lacks certainty, leaving family members and close friends feeling stuck because it is so difficult to mourn or find closure. One type of ambiguous loss is when the person is physically present but psychologically absent because their personality, memory, cognition, or emotional connection has been altered. Examples might include a family member with dementia, a progressive disease, a severe emotional disorder, or substantial brain injury. A second type of ambiguous loss is when the person is psychologically present but physically absent. This could include a missing person due to a natural disaster, a long- term incarceration, a kidnapping, or severe estrangement from the family. This type of loss can lead to intense confusion, frozen grief, and a prolonged sense of helplessness.
Marchell smiling, sitting on a couch, holding notebooks
By Dan Lewis Foundation December 2, 2025
Marchell is an engaging and energetic middle-aged man who was enthusiastic about being interviewed for the DLF newsletter. He is an activist working to promote the rights and well-being of persons in the brain injury community, with a particular emphasis on helping persons with brain injury who are incarcerated or have been released from prison. Marchell is a successful businessman, proud of the company he co-founded--the Association of Young Business Owners (AYBOS), a marketing company in the Denver, Colorado area. He also works for Well Power (Denver’s Mental Health Center system) as a Zero Suicide Certified Peer and Family Specialist.  Marchell is clearly a man on the move to get a lot of positive things done. But this wasn’t always the case. Marchell spent much of his younger adult life incarcerated himself for a variety of crimes including robbery and assault. He had a history of recidivism following multiple releases.