David A. S. Kaufman, Ph.D., ABPP, is a clinical neuropsychologist and the director of Gateway Neuropsychology, LLC. He is board certified in clinical neuropsychology from the American Board of Clinical Neuropsychology. In addition to working with clients at Gateway Neuropsychology, he is an Associate Professor of Psychology at Saint Louis University, where he is director of the doctoral program in clinical psychology and is active in research, teaching, and clinical training of doctoral students.  

Dr. Kaufman received his training in neuropsychology from two of the most established and respected training programs in the nation, earning is Ph.D. from the University of Florida and completing his internship and postdoctoral fellowship in neuropsychology from the UCLA Semel Institute.

Prior to becoming a psychologist, Dr. Kaufman joined Teach For America and taught high school for five years.  He continues to have a passion for teaching and working with students to maximize their potential.

Michelle Tankersley, MSN, is the practice manager for Gateway Neuropsychology. She has a vast knowledge of neuropsychology and is available to assist you with your questions and/or concerns about assessments and scheduling.

Michelle has many years of clinical management experience in specialty areas such as Behavioral Health, IBD, Pathology, OB/GYN and Chiropractic, with the last twelve years managing in neuropsychology. She has managed inpatient, outpatient and rehabilitation sites of care. Her MSN was earned from Memorial University in St. John’s Newfoundland, CA with a minor in business management.

Michelle is an active member of the Human Rights Committee for the City of Ellisville, a team captain for the Alzheimer's Association Walk to End Alzehimer's and a volunteer for several non-profit animal rescue and therapy organizations.