Southern Oregon  Neuropsychological Clinic​

Our Providers

Michael R. Villanueva, PsyD, ABPP-CN


Dr. Villanueva received his doctorate at Baylor University in 1990, and completed his internship and post doctoral residency at the Portland VAMC at Oregon Health Sciences University.  Dr. Villanueva is board-certified in neuropsychology.  He has served as a reviewer for medical journals, published original research in assessment of dementia, and is a consulting neuropsychologist for both Medford hospitals.  Dr. Villanueva is also a member of the State Lawyer Assistant Committee.  Dr. Villanueva has served as the president of the Oregon Geriatric Society, and continues to work with providers statewide to educate healthcare professionals regarding geriatric patient care.

Mercedes Dickinson, PhD, ABPP-CN


Dr. Dickinson received her doctorate in Clinical Psychology, with a specialization in Neuropsychology, at the University of Houston.  She completed her internship in Clinical Psychology/ Neuropsychology at the VA Pittsburgh HealthCare System and her postdoctoral fellowship in Neuropsychology at the Medical College of Wisconsin.  Her research interests have focused on the cognitive changes associated with primary and metastatic brain tumors and their treatment (e.g., surgery, radiation therapy, and chemotherapy).  Clinical interests also include evaluation of dementia, traumatic brain injury, epilepsy, multiple sclerosis, and movement disorders.  Dr. Dickinson is a consulting neuropsychologist for both Medford hospitals.

Tricia L. Smith, MS


Tricia Smith, MS, earned her master’s in psychology at the University of Oregon in 2000, then completed a five year residency program in clinical neuropsychology in Medford, Oregon.  She has published original research in Alzheimer’s assessment, and has served on the Alzheimer’s Associations’ advisory board for the Southern Oregon region.

Southern Oregon Neuropsychological Clinic provides comprehensive neuropsychological assessment services to child, adult, and geriatric cases of known or suspected cognitive and behavioral health issues.