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Tim J. Arentsen

Dr. Arentsen serves patients with a wide range of conditions (ages 16+), including ADHD, brain tumors, concussions and TBIs, dementia, epilepsy and seizures, mild cognitive changes, movement disorders such as Parkinson’s, stroke, and other conditions that affect how the brain works. He also performs pre-surgical evaluations for some procedures (e.g., Dorsal Column Spinal cord stimulation). For Dr. Arentsen, the goal of many evaluations is not simply to clarify questions about a patient’s diagnosis but may also include identifying appropriate treatment recommendations, encouraging a patient to live to his/her fullest potential, and/or commenting on some of the implications that cognitive limitations may have for a patient and his/her family. As such, he can provide evaluations that are clinically indicated by a referring provider as well as forensic evaluations (e.g., IMEs) that may address fitness for duty, disability, or worker’s compensation.

Dr. Arentsen grew up in Sheboygan, WI, and completed his undergraduate degree at Wheaton College. He earned his doctoral degree in clinical psychology with an emphasis on neuropsychology as well as a Master of Arts in Theology at Fuller Theological Seminary. He also completed an APA-accredited internship at the Iowa City VA and a post-doctoral fellowship in neuropsychology at the Memphis VA Medical Center, an APPCN-member training program. He is certified by the American Board of Professional Psychology in Clinical Neuropsychology (ABPP-CN).

Dr. Arentsen has also supplemented his career by continuing to engage in research that has enhanced his clinical work. He has a wide range of research interests, and several of his past peer-reviewed publications have addressed issues related to job training and readiness (especially for police officers) as well as the trustworthiness of a patient’s neuropsychological scores.

Governor Bill Lee appointed Dr. Arentsen to the Board of Examiners in Psychology in 2020. His other professional activities include serving through the American Psychological Association (APA) as a site visitor during the accreditation of training programs in psychology and neuropsychology.

Professional Societies
  • American Board of Professional Psychology
  • American Psychological Association, Division 40, Clinical Neuropsychology
  • International Neuropsychological Society
  • National Academy of Neuropsychology
  • Tennessee Psychological Association

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We're available to serve your brain and spine care needs at these locations. The Semmes Murphey main office is just 20 minutes from the Memphis International Airport, and we have clinics throughout the Mid-South area.

Services & Specialties

The best brain and spine care in the world starts here. The doctors of Semmes Murphey specialize in neurosurgery, neurology, physical medicine and rehabilitation, interventional pain, and neuropsychology.