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Maya E O'Neil

Dr. Maya O’Neil is an Associate Professor at Oregon Health & Science University (OHSU) in the Department of Psychiatry and the Department of Medical Informatics and Clinical Epidemiology. She is Core Faculty in OHSU’s Clinical Psychology doctoral program. Dr. O’Neil is a licensed psychologist and Neuropsychologist at the Portland VA where she currently works as a Rural Telehealth, Posttraumatic Stress Disorder (PTSD), and Neuropsychology clinician. As a clinician, Dr. O’Neil conducts evidence-based mental health treatments for depression and PTSD (e.g., Prolonged Exposure, Cognitive Processing Therapy, Cognitive Behavioral Therapy, Acceptance and Commitment Therapy, and Behavioral Activation), neurocognitive assessments, and cognitive rehabilitation with Veterans who have PTSD, Traumatic Brain Injury (TBI), and other mental and physical health comorbidities. Dr. O’Neil also supervises trainees doing clinical work related to Rural Telemental Health, PTSD, Neuropsychology, Inpatient Mental health, and Substance Use. She also serves as a research mentor for psychology interns, postdoctoral fellows, and junior faculty.

Dr. O’Neil’s research focuses on assessment, treatment, and health services outcomes related to PTSD, traumatic brain injury (TBI), and common comorbidities. Dr. O’Neil is currently funded on a 5-year Career Development Award (CDA) through the VA’s Rehabilitation Research & Development program. Dr. O’Neil’s CDA focuses on conducting a randomized controlled trial of Compensatory Cognitive Training for Veterans with PTSD as well as tracking longitudinal cognitive outcomes for Veterans who engage in evidence-based psychotherapy for PTSD.  Previously, she was the recipient of an Agency for Healthcare Research and Quality K Fellowship at OHSU. Prior to the K fellowship, Dr. O’Neil was a Core Investigator for the VA Evidence-based Synthesis Program and AHRQ Scientific Resource Center for the Evidence-based Practice Center Program, working on projects related to mental health, TBI, and evidence synthesis methods. She has been a principal investigator on multiple evidence synthesis projects, including reviews of interventions for dementia, suicide prevention/risk assessment, TBI, and PTSD. She has also been a co-investigator on research and evidence synthesis projects related to functioning, health disparities, PTSD, TBI, pain, drug/alcohol abuse, and neuropsychological assessment. She has served as a statistics, methods, and research design consultant with a focus on development and validation of assessment tools and evidence synthesis methodology and dissemination. Dr. O’Neil has advanced quantitative methods training including linear and non-linear modeling for univariate and multivariate analyses, Exploratory and Confirmatory Factor Analysis, and Structural Equation Modeling methods.

Currently, Dr. O’Neil is a principal- or co-investigator on numerous grants investigating mental health and cognitive functioning. She has collaborated on multiple VA and DoD projects, including as a co-investigator and lead neuropsychologist for the Portland site of the Chronic Effects of Neurotrauma Consortium (CENC) longitudinal epidemiology study (now funded as LIMBIC) along with OHSU colleague Dr. Kathleen Carlson.

Information on her work related to cognitive rehabilitation with OHSU colleague Dr. Marilyn Huckans can be found here. Dr. O’Neil was recently funded to lead a project developing an fMRI protocol to examine neurophysiologic outcomes for Veterans with TBI and PTSD, and works with OHSU’s Advanced Imaging Research Center for this project. She has also obtained multiple years of funding to lead and develop the PTSD-Repository for the National Center for PTSD, available through the National Center for PTSD website, here.

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Areas of interest

  • Post-traumatic stress disorder (PTSD)
  • Traumatic Brain Injury (TBI)
  • Neuropsychology
  • Cognitive Rehabilitation
  • Rural Telemental Health
  • Evidence Synthesis/Systematic Reviews
  • Quantitative Methods


  • "Integration of existing systematic reviews into new reviews" Systematic Reviews June 23 2014
  • "Medical providers' screening, training and intervention practices for eating disorders" Eating Disorders March 2010
  • "Measuring perceived teacher support and its influence on adolescent career development" Journal of Career Assessment May 2008
  • "Early warning system scores for clinical deterioration in hospitalized patients" Annals of the American Thoracic Society November 1 2014
  • "Factors associated with mild traumatic brain injury in veterans and military personnel" Journal of the International Neuropsychological Society February 24 2014
  • "Comparing the Neuropsychological Test Performance of Operation Enduring Freedom/Operation Iraqi Freedom (OEF/OIF) Veterans with and without Blast Exposure, Mild Traumatic Brain Injury, and Posttraumatic Stress Symptoms" Journal of the International Neuropsychological Society June 30 2015
  • "Comparison of health service use among veterans with methamphetamine versus alcohol use disorders" Journal of Addiction Medicine  2014
  • "Counseling latina/o students from an ecological perspective" Journal of College Counseling September 2009
  • "Observational evidence and strength of evidence domains" Systematic Reviews April 23 2014
  • "Transgender identities and gender variance in vocational psychology" Journal of Career Development March 2008
  • "Positive adult support and depression symptoms in adolescent females" Journal of Research on Adolescence June 2011
  • "Using questionnaires in clinical couple and family research"  January 1 2014
  • "Intensive care unit outcomes among patients with lung cancer in the surveillance, epidemiology, and end results-medicare registry" Journal of Clinical Oncology May 10 2012
  • "Aggressiveness of intensive care use among patients with lung cancer in the surveillance, epidemiology, and end results-medicare registry" Chest October 1 2014
  • "Predictive effects of mother and peer influences on increases in adolescent eating disorder risk factors and symptoms" International Journal of Eating Disorders December 2011
  • "Screening for hepatocellular carcinoma in chronic liver disease" Annals of Internal Medicine August 19 2014
  • "Assessing phonemic awareness in preschool and kindergarten" Assessment for Effective Intervention March 2011
  • "Medical Providers' Self Perceived Knowledge and Skills for Working With Eating Disorders" Eating Disorders January 2012
  • "Educational group visits for the management of chronic health conditions" Patient Education and Counseling  2014
  • "Peer Associations and Coping" The Journal of Black Psychology October 2013
  • "So many options, where do we start? An overview of the care transitions literature" Journal of hospital medicine (Online) March 1 2016
  • "Implementation Processes and Pay for Performance in Healthcare" Journal of General Internal Medicine March 7 2016
  • "Compensatory Cognitive Training for Operation Enduring Freedom/Operation Iraqi Freedom/Operation New Dawn Veterans With Mild Traumatic Brain Injury" Journal of Head Trauma Rehabilitation March 28 2016
  • "Risk of hospitalization due to motor vehicle crashes among Iraq and Afghanistan War Veterans diagnosed with traumatic brain injury" NeuroRehabilitation  2016
  • "Postconcussion symptoms reported by Operation Enduring Freedom/Operation Iraqi Freedom veterans with and without blast exposure, mild traumatic brain injury, and posttraumatic stress disorder" Journal of Clinical and Experimental Neuropsychology September 28 2016
  • "Sensory sensitivity in operation enduring freedom/operation Iraqi freedom veterans with and without blast exposure and mild traumatic brain injury" Applied neuropsychology. Adult December 9 2016
  • "The effects of pay-for-performance programs on health, health care use, and processes of care" Annals of Internal Medicine March 7 2017
  • "Mental Health Does Not Moderate Compensatory Cognitive Training Efficacy for Veterans With a History of Mild Traumatic Brain Injury" Archives of Physical Medicine and Rehabilitation  2017
  • "The effects of cannabis among adults with chronic painandan overview of general harms a systematic review" Annals of Internal Medicine September 5 2017
  • "Benefits and harms of plant-based Cannabis for posttraumatic stress disorder a systematic review" Annals of Internal Medicine September 5 2017

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