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Our Team

Our Team

Nathan D. Zasler, MD

Mark Bender, PhD

Carrie Hartwell, PhD, LCSW

Tree of Life Staff


Dr. Mark Bender                                                      


      Dr. Mark Bender is a Rehabilitation Neuropsychologist and Clinical Program Director for Tree of Life Services. He obtained his Ph.D. in clinical psychology from Saint Louis University and completed his internship at the Durham VA Medical center, and postdoctoral training at the Kansas City VA Medical Center. Dr. Bender has 16 years of experience in rehabilitation and has provided rehabilitation and neuropsychological services in a variety of rehabilitation settings.  Dr. Bender has been involved extensively in program development and evaluation projects. He has worked in both the private and federal government sectors.  He has published in the areas of chronic pain and neuropsychology and has given presentations in the topics of rehabilitation, chronic pain, neuropsychology, and polytrauma.