He earned his PsyD degree in Clinical Psychology from Rosemead School of Psychology at Biola University in July 2001 and completed a psychology residency at the Vanderbilt/VA Psychology Consortium. He was a Visiting Scholar at the Oliver Zangwill Center at the Princess of Wales Hospital in Ely, England in the summer of 2011, where he received intensive training in cognitive rehabilitation. He is a licensed clinical psychologist who specializes in neuropsychological outcomes research and studies psychological (e.g. depression and PTSD) and cognitive functioning in survivors of critical illness as well as the effects of cognitive rehabilitation in ICU survivors with brain injuries. He is a National Institute of Aging funded investigator.