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Clinical Team



Ryan Darby, MD,  

Ryan Darby is an assistant professor of neurology at Vanderbilt University Medical Center. He currently sees patients as the director of the Frontotemporal Dementia Clinic in the Department of Neurology at VUMC.

He received his undergraduate degree from Princeton University in psychology and neuroscience, and his medical degree from Vanderbilt University. He trained in neurology at Massachusetts General Hospital and Brigham and Women's Hospital as part of the Partners Neurology/Harvard Medical School program. He then received the Sidney R. Baer, Jr. Research Fellowship in Clinical Neurosciences at the Beth Israel Deaconess Medical Center. He simultaneously completed a clinical fellowship in behavioral neurology and neuropsychiatry at Beth Israel Deaconess Medical Center, Massachusetts General Hospital, and McLean Psychiatric Hospital in Boston. 


Lealani Mae Y. Acosta, MD, MPHLealani Mae Y. Acosta, MD, MPH 

Dr. Lealani Mae Y. Acosta is a board-certified behavioral neurologist and an Assistant Professor of Neurology at Vanderbilt University Medical Center. Dr. Acosta has clinical expertise in neurodegenerative diseases in aging adults. She is a clinician in the Behavioral and Cognitive Neurology Division of the Department of Neurology where she evaluates and treats patients with memory loss symptoms. Dr. Acosta serves as a study physician for the Vanderbilt Memory and Aging Project and the Vanderbilt Alzheimer’s Disease Research Center.  

Dr. Acosta completed medical school at University of Virginia School of Medicine, a neurology residency at University of Virginia Health System, and a behavioral neurology fellowship at University of Florida. Dr. Acosta completed a Master of Public Health degree at Vanderbilt University. She joined the Vanderbilt faculty in 2013.