Faculty

Faculty teaching student information on whiteboard

Faculty with an asterisk by their name are able to serve as research mentors. We review applicants on a case by case basis for mentor and program match and qualifications. It is strongly recommended that applicants describe their fit for working with at least two possible mentors.

For those applying for Fall 2022 admission, we are likely to admit students into labs focused on the following research areas:

  • Mechanisms of neurological and psychological disorders of aging, including cognition and behavior in the context of addiction or viral infections
  • Implementation science related to family- and home-based interventions for children with medical and psychosocial complexity
  • Neuroscience and biopsychosocial influences on very early life risk for dysregulatory psychopathology, and the development of pain-related problems in adolescents
  • Research through the VA national rural health center, examining health disparities and health equity among women, racial/ethnic minority, disabled, and LGBTQ+ rural veterans

Core Faculty

Jason I. Chen, Ph.D. (core; Psychiatry/VA) in Clinical Psychology from the University of South Florida. Dr. Chen is the Assistant Program Director for the Clinical Psychology PhD Program at OHSU and an Assistant Professor of Psychiatry. He is also a Core Investigator at the VA HSR&D Center to Improve Veteran Involvement in Care (CIVIC) located with the VA Portland Health Care System. He is currently funded on a 5-year, VA HSR&D Career Development Award titled, "Enhancing Social Connectedness Among Veterans at High Risk for Suicide through Community Engagement," (CDA 18-185; IK2HX002787). His research lab, the Connecting Communities for Suicide Prevention Lab (CCSP), studies suicide prevention for high-risk populations with a focus on military veterans, community-based approaches, and help-seeking processes. Clinically, Dr. Chen provides supervision on suicide-specific interventions and adapting evidence-based psychotherapies to acute care and non-traditional settings.

Susanne W. Duvall, Ph.D. (core; Pediatrics) in Clinical Psychology from the University of New Mexico. Dr. Duvall is the Associate Director of Clinical Training for the Clinical Psychology PhD Program. Her expertise lies in neuropsychological evaluation and she enjoys working with children and young adults with special healthcare needs and sees patients through the Autism Program, the Pediatric Brain Tumor Program and the Child Development and Rehabilitation Center.  Research interests include development of executive function and neurocognitive outcomes in many medically complicated populations (premature birth, childhood cancer and brain tumors and autism spectrum disorders).  Dr. Duvall is also very interested in cultural and individual differences that impact coping, functional outcome, diagnosis and treatment in these populations.  

Amy Holley, Ph.D.* (core; Pediatrics) in Clinical Child Psychology from Case Western Reserve University. Dr. Holley's expertise lies in the assessment and treatment of youth with chronic pain and their families. Research interests include how psychopathology and sleep disturbances influence pain-related disability in youth experiencing acute or chronic pain and the identification of mechanisms underlying the development of chronic pain. Dr. Holley is part of the Advancing Research in Pediatric Pain lab.

Jennifer Loftis, Ph.D.* (core; Psychiatry/VA) in Behavioral Neuroscience and postdoctoral fellowship in Molecular Microbiology and Immunology, from Oregon Health & Science University; MA in Clinical Psychology, Fairleigh Dickinson University, New Jersey. Dr. Loftis possesses a unique set of experiences and resources that are ideal for bridging the interrelated disciplines of neuroscience, immunology and molecular biology to tackle mental health disorders from a comprehensive perspective. Her translational research program is focused on investigating the psychoneuroimmunological mechanisms contributing to substance use disorders and neuropsychological impairments (e.g., cognitive deficits and mood disorders) and how immunotherapeutic strategies can be used to treat these conditions. Read more about the Psychoneuroimmunology Research Team and the Methamphetamine Research Center.

Kristen Mackiewicz Seghete, Ph.D.* (core; Psychiatry) in Clinical Psychology from the University of Colorado Boulder. Dr. Seghete's clinical expertise is in pediatric neuropsychological evaluations and working with women and children who have experienced interpersonal trauma. Her research is focused on neurobiological risk factors for psychopathology assessed primarily through neuroimaging, neuropsychological assessment, and behavioral tasks, and direct translational science that incorporates mechanistic studies and clinical trials. Dr. Seghete is interested in populations at heightened risk due to prior trauma or psychiatric histories, with a particular emphasis on understanding how periods of heightened neuroplasticity, particularly adolescence and the perinatal period, simultaneously confer vulnerability and potential for increased responsivity to intervention. While she has some ongoing work focused on adolescent cognitive brain development, current studies are primarily focused on cognitive and affective changes during the perinatal and postpartum period, including how opioid use may affect this trajectory, and translational studies of mindfulness-based interventions during pregnancy.

Leeza Maron, Ph.D. (core; Psychiatry) in Clinical Psychology (specialization in Neuropsychology) from the University of Florida. Dr. Maron is the Director of Clinical Training, and is also Director of the Adult Neuropsychology Clinic. She provides clinical and forensic neuropsychological evaluations to a broad range of patients with suspected neurocognitive disorders and provides student practicum experiences in that clinic as well. Research interests involve the development and implementation of novel neuropsychological paradigms to study executive dysfunction and attentional failures in those with ADHD and other psychiatric disorders, where she collaborates with Dr. Nigg and others.

Suzanne H. Mitchell Ph.D.* (core; Psychiatry/Behavioral Neuroscience) in Biopsychology from State University of New York, Stony Brook. Dr. Mitchell's research uses neuroeconomic principles to understand choice behavior in healthy normal and patient samples. Studies include the genetic and neurobiological bases and consequences of impulsive and risky behavior. Read more about Dr. Mitchell's Translational Neuroeconomics Lab.

Joel Nigg, Ph.D.* (core; Psychiatry) in Clinical Psychology from the University of California, Berkeley. Dr. Nigg's research focuses on the psychological mechanisms and causes in attention deficit hyperactivity disorder (ADHD). His broad program of research includes maternal-infant early life studies (with Elinor Sullivan), as well as studies of genetics, family factors, and personality and temperament from a longitudinal perspective. Dr. Nigg is Director of the Center for ADHD Research.

Maya O'Neil, Ph.D.* (core; Psychiatry/VA). in Counseling Psychology from the University of Oregon and completed her internship at the Portland VA. She is a VA Career Development Awardee and past AHRQ K Scholar at OHSU. Her research and clinical work focuses on PTSD, TBI, cognitive rehabilitation, and suicide prevention. She is a neuropsychologist at the VA on the Rural Telemental Health team, is the Co-Director for Research Training for the MIRECC Fellowship Program, and provides clinical and research supervision to practicum students and fellows. She is a quantitative methodologist, leads systematic reviews for the VA, and developed the PTSD-Repository with the National Center for PTSD. In addition to her CDA, she is PI of VA, DoD, and AHRQ grants on PTSD, TBI, and suicide prevention.

Sara Walker, Ph.D. (core; Psychiatry) in Clinical Psychology from the University of California, Santa Barbara, and postdoctoral fellowship in Clinical Neuropsychology from the University of Michigan. Dr. Walker provides clinical services to adults referred for comprehensive neuropsychological evaluations in the Adult Outpatient Psychiatry Clinic at OHSU. Research interests and activities are related to cognitive functioning and quality of life among individuals with cancer.  Dr. Walker is also active in providing disaster mental health services and psychological first aid in the region.

Anna Wilson, Ph.D.* (core; Pediatrics) in Clinical Psychology from University of Washington. Dr. Wilson conducts research on functional outcomes in adolescents with chronic pain with a focus on developing prevention and treatment programs to reduce pain and disability. She also provides behavioral assessment and treatment to children and adolescents through the Pediatric Pain Management and Coping Clinics. Read more about Dr. Wilson's Advancing Research in Pediatric Pain Lab.

Associate Faculty

Joshua L Clark, Ph.D. (associate; Psychiatry/VA) in Clinical Psychology from American University and postdoctoral fellowship in Polytrauma at VA Portland. Dr. Clark's expertise lies in the assessment and treatment of survivors of complex trauma with both psychological and medical sequelae.  He is a neuropsychologist at VA Portland and provides psychotherapy through a private practice in the community. 

Lauren M. Denneson, MS, Ph.D.* (associate; Psychiatry/VA) in Social Psychology from Portland State University. Dr. Denneson is an Associate Professor of Psychiatry at Oregon Health & Science University and a core investigator with the VA HSR&D Center to Improve Veteran Involvement in Care at the VA Portland Health Care System. She is a social psychologist with training in health promotion and disease prevention. Her research primarily centers on suicide prevention, with special focus areas of patient-centered care and social determinants of health. One of her current projects is a national study examining gender differences in suicide risk, resilience, and recovery using a socio-ecological framework.

Nathan F. Dieckmann, Ph.D. (associate; School of Nursing) in Judgment and Decision Making from the University of Oregon. Dr. Dieckmann leads the Statistics Core in the School of Nursing. Areas of statistical expertise include structural equation modeling, longitudinal modeling, and psychometrics. Dr. Dieckmann also conducts basic and applied research in the decision sciences and risk communication. His current work is focused on how people understand and use uncertainty in a range of decision contexts. Other areas of interest include examining lay and expert perceptions of conflicting scientific information and trust in science more generally.

Danny C. Duke, Ph.D. (associate; Pediatrics) in Clinical Psychology from the University of Florida. Dr. Duke has notable expertise (and research interests) in optimizing empirically supported treatment for youth anxiety, obsessive-compulsive disorder, and PTSD, through the Institute on Developmental Disabilities (IDD), Anxiety Treatment Clinic. He also has specialized expertise in the use habit reversal treatment (HRT) to address trichotillomania, tic/Tourette disorders (CBIT), and the body focused repetitive disorders. He holds a degree concentration in Pediatric Psychology, with clinical and research interests in improving youth and family adjustment to chronic health conditions, and optimizing the transition from pediatric to adult healthcare settings and health condition management (self-care), with particular interests in children and adolescents with type 1 diabetes, and their families.

Alice Graham, Ph.D.* (associate; Psychiatry) in Clinical Psychology from University of Oregon. Dr. Graham's research focuses on how the early environment influences developing brain systems and risk for mental health disorders. Her work employs MRI beginning in the neonatal period to characterize the developing brain. Her clinical interests lie in employing intervention to prevent or ameliorate effects of stress exposure on children and families. Learn more about Dr. Graham's research

David W. Greaves, Ph.D.* (associate; Psychiatry/VA) in Clinical Psychology from Brigham Young University. Dr. Greaves has worked primarily in administrative roles for several years, but also provides clinical services in health psychology settings at the VA Portland Health Care System.  He is the Clinical Director of the Whole Health Service at the facility, and is the past Chief of Psychology.

Hanna Gustafsson, Ph.D. (associate; Psychiatry) in Developmental Psychology from the University of North Carolina at Chapel Hill. Dr. Gustafsson's research explores prenatal and early life influences on children’s self-regulation and risk for psychopathology. Dr. Gustafsson has a specific interest in perinatal mental health and in identifying the biological and family-level mechanisms through which early life experiences influence children’s long term functioning. 

Jeni Johnstone, Ph.D.* (associate; Psychiatry) in Clinical Psychology from the University of Otago, New Zealand; Post-Graduate Diploma, Clinical Psychology, University of Canterbury, New Zealand; MA in Counseling Psychology, Santa Clara University, CA. As a clinician-scientist, Dr. Johnstone conducts clinical trials in integrative treatments (e.g., mindfulness and micronutrient supplementation) for ADHD, mood and behavioral issues in adults and children. She works with patients ranging in age from children through adults, and provides therapy to families in a Family Therapy Clinic.

Amy Kobus, Ph.D. (associate; Psychiatry) in Counseling Psychology from the University of Iowa. Dr. Kobus has a general clinical practice and provides both counseling and assessment services to adults, adolescents, couples and families. She has specialized training in health psychology, chronic pain management and primary care psychology. She has considerable experience with young adults, psychological aspects of medical illness, and cultural issues. Dr. Kobus’ previous research has focused on chronic pain, HIV and cervical cancer prevention with the Asian community using mixed-methods and community-based participatory research. Her current research interests are in chronic pain and opioid treatment, behavioral health integration in primary care, and health disparities and community-based research.

Travis I. Lovejoy, Ph.D.* (associate; Psychiatry/VA) in Clinical Psychology from Ohio University. Dr. Lovejoy's clinical expertise is in health psychology, behavioral medicine, and substance use disorders. His research interests include optimizing pain management in patients with co-occurring chronic pain, mental health, and substance use disorders, as well as HIV prevention in traditionally underserved populations.

Benjamin Morasco, Ph.D.* (associate; Psychiatry/VA) in Clinical Psychology from Saint Louis University. Dr. Morasco provides clinical services in the specialty substance abuse treatment program at the VA Portland Health Care System, with a focus on treating non-substance-related addictive behaviors. His research interests are on improving the safety and effectiveness of pain management interventions, with a specialty interest in treating patients with co-occurring psychological and substance use disorders.

Bonnie J. Nagel, Ph.D.(associate; Psychiatry/Behavioral Neuroscience) in Clinical Psychology, with emphasis in Neuropsychology, from the University of Memphis. Dr. Nagel's clinical expertise lies in pediatric neuropsychological evaluation. Research interests include utilizing neuroimaging, as well as other biopsychosocial assessment techniques, to better understand neurodevelopment and risk for psychopathology (including addiction, depression, and suicidality) and comorbid medical disorders (e.g., chronic pain) during adolescence and young adulthood. Read more about Dr. Nagel's Developmental Brain Imagining Lab.

Elinor Sullivan, Ph.D.* (associate; Psychiatry/Oregon National Primate Research Center) in Integrative Physiology from Oregon Health & Science University. Dr. Sullivan’s research examines the influence of the early environment on offspring behavioral and emotional regulation, with an emphasis on behaviors that relate to early precursors of mental and behavioral disorders including attention deficit hyperactivity disorder, autism spectrum disorders, anxiety, and depression. She currently is directing a large new study following a new, large cohort of pregnant women and offspring from before birth to preschool, to track early prediction and mechanisms, in collaboration with Joel Nigg, Jennifer Loftis, and Hanna Gustafsson.

Amy Wagner, Ph.D. (associate; Psychiatry/VA) in Clinical Psychology from the University of Washington. Dr. Wagner provides clinical expertise in cognitive-behavioral therapy for PTSD and anxiety disorders, as well as Dialectical Behavior Therapy. Dr. Wagner has an on-going program of research in the area of treatment development and evaluation. In collaboration with Dr. Daniel Storzbach, she is currently examining the effectiveness of Cognitively Augmented Behavioral Activation for veterans with comorbid PTSD and traumatic brain injury.

Other Contributors

Christopher F. Anderson, Ph.D. (other contributor; Psychiatry/VA) in Clinical Psychology from Auburn University. Dr. Anderson is the Chief of Psychology at the VA Portland Health Care System and is also Program Manager for the Substance Use Disorder Treatment Program (SATP) and the PTSD Clinical Team (PCT). He consults with the Regional Liver Transplant Program, performing pre-transplant evaluations to determine candidate's risk of relapse post-transplant surgery.

Stephen Boyd, Ph.D. (other contributor; Psychiatry) in Clinical Psychology from Arizona State University. Dr. Boyd had his doctoral training in health psychology and post-doctoral specializing in pain psychology. He supervises graduate students in practicum training within the Comprehensive Pain Center where he is a practicing psychologist.

James W. Carson, Ph.D. (other contributor; Psychiatry) in Clinical Psychology from the University of North Carolina at Chapel Hill. Dr. Carson has worked extensively with individuals suffering from persistent pain (back pain, fibromyalgia, cancer-related, multiple sclerosis, etc.), those with post-concussion/traumatic brain injury concerns, and patients referred for bariatric surgery consideration. He is an Associate Professor of Anesthesiology and Perioperative Medicine in the School of Medicine at OHSU.

Teni Davoudian, Ph.D. (other contributor; Psychiatry) in Clinical Psychology from Marquette University. Dr. Davoudian is a clinical psychologist with specialized training in health psychology. She provides psychotherapy to women and couples experiencing emotional distress related to infertility, pregnancy, and postpartum depression and anxiety. 

Tyler Duffield, Ph.D. (other contributor; Pediatrics) in Clinical Psychology from Brigham Young University. Dr. Duffield specializes in treating children impacted by mild traumatic brain injury or neurologic disease, and their families.

Kurt A. Freeman, Ph.D. (other contributor; Pediatrics) in Clinical Psychology from West Virginia University. Dr. Freeman is the program director of the CDRC Behavioral Pediatrics Treatment Program, which focuses on toileting problems, tic and habit problems, and behavior problems in young children. 

Sue Gritzner, Psy.D. (other contributor; Psychiatry) in Clinical Psychology from Pacific University. Dr. Gritzner specializes in the treatment of chronic pain. She is especially interested in evidence based approaches such as cognitive behavioral techniques and approaches that facilitate a relaxation response (biofeedback, guided imagery, relaxation, and meditation).

Nathan Hantke, Ph.D. (other contributor; Psychiatry) in Clinical Psychology from Marquette University. Dr. Hantke's  is a board certified clinical neuropsychologist with experience assessing cognitive problems in adults across a wide range of diagnoses. His primary research interests are in geriatric neuropsychology, and he also serves as the national Co-Director for the VA’s 27-site research fellowship program in mental illness research and treatment.

Michael A. Harris, Ph.D. (other contributor; Pediatrics) in Clinical Psychology from Alliant International University, San Diego. Dr. Harris is the director and founder of OHSU’s Novel Interventions in Children’s Healthcare (NICH) program. His research has involved the adaptation, implementation and evaluation of a family-based psychosocial intervention for adolescents with chronic conditions. 

Darren M. Janzen, Psy.D. (other contributor; Pediatrics) in Clinical Psychology from George Fox University. Dr. Janzen conducts comprehensive interdisciplinary diagnostic evaluations through the CDRC Child Development clinics. Areas of specialty include attention-deficit/hyperactivity disorder and learning disabilities.

Thomas Kern, Ph.D. (other contributor; Anesthesiology) in Clinical Psychology from the University of Missouri. Dr. Kern specializes in helping patients manage chronic pain and other chronic conditions. He is the Director of Pain Psychology for OHSU's Anesthesiology and Perioperative Medicine (APOM).

Justin B. Lee, Ph.D. (other contributor; Pediatrics) in Clinical Psychology from Fuller Theological Seminary. Dr. Lee specializes in pediatric neuropsychology. His work helps to identify neurocognitive late effects associated with cancer treatments in order to develop evidence based treatment and intervention strategies. He is also involved in direct patient care working within the Doernbecher Cancer Survivorship Program. 

Danielle Moyer, Ph.D. (other contributor; Pediatrics), in Clinical Psychology from the University of North Texas. Dr. Moyer practices primarily in the Doernbecher Gender Clinic and in association with the OHSU Transgender Health Program. She specializes in supporting transgender and gender diverse youth and their families. 

Mina Nguyen-Driver, Psy.D. (other contributor; Pediatrics) in Clinical Psychology from Alliant University. Dr. Nguyen is a licensed pediatric psychologist at the Child Development Rehabilitation Center (CDRC) at OHSU. She is an associate professor of pediatrics and is involved with direct patient care in the hemophilia, spina bifida, craniofacial, metabolic, and neurology clinics. 

Emily Olsen, Ph.D. (other contributor; Pediatrics) in Clinical Psychology from the University of Illinois at Chicago. Dr. Olsen provides neuropsychological assessment, consultation, and treatment for youth with developmental and medical complexity.

Jacob Raber, Ph.D.* (other contributor; Behavioral Neuroscience) in Molecular Genetics and Virology from The Weizmann Institute of Science. Dr. Raber’s studies the aging brain and causes and mechanisms of neurological disorders and psychological disorders of aging, using both humans and in animal (non-human primate and rodent) models. Research targets include both specific molecular genetic targets, such as apolipoprotein E, and environmental factors, including irradiation, immunotherapy, a high-fat diet, environmental toxins, second-hand smoke, and other stressors.  Based on what is learned in animal models, tests and treatment strategies are being developed to improve brain function in humans suffering from these conditions. Possible opportunities include collaborative efforts with Dr. Mitchell or Loftis in the context of aging, addiction, or viral infections as part of a co-mentored rotation or beyond. Read more about Dr. Raber’s research.

Kimberly Reynolds, Ph.D. (other contributor; Pediatrics) in Clinical Psychology from the University of Alabama at Birmingham. Dr. Reynolds provides psychological assessment and treatment to children with developmental disabilities and chronic medical conditions.

Andrew Riley, Ph.D. (other contributor; Pediatrics) in Clinical Psychology from Western Michigan University. Dr. Riley’s research interests focus on the integration of behavioral health services in pediatric primary care and the dissemination of simple and effective methods for improving common child behavior problems.

Kimberly Spiro, Ph.D. (other contributor; Pediatrics) in School Psychology from the University of Oregon. Dr. Spiro co-directs the Novel Interventions in Children's Healthcare, which assists youth with chronic medical conditions and their families.

Jason Steward, Ph.D. (other contributor; Psychiatry/VA) in Counseling Psychology from the University of Minnesota, Twin Cities. Dr. Steward provides psychological assessment and treatment to trauma survivors within populations of sexual assault, combat, terrorism, maltreatment, and sudden bereavement.

Chris Stauffer, M.D.* (other contributor; Psychiatry/VA) is an Oregon Health & Science University medical school graduate, psychiatrist, and addiction medicine physician. Dr. Stauffer's lab aims to maximize the benefits of therapeutic alliance and psychotherapy through the adjunct use of social psychopharmacologysuch as oxytocin, MDMA, and psilocybin.

Jacklyn Stellway Beard, Psy.D. (other contributor; Pediatrics) in Clinical Psychology from Nova Southeastern University. Dr. Stellway specializes in caring for children and adolescents with gastrointestinal issues. 

David Wagner, Ph.D. * (Pediatrics) in Clinical Psychology from the University of Missouri. Dr. Wagner is the Research Director of the Novel Interventions in Children’s Healthcare (NICH) Program. His expertise lies in the identification and treatment of children and adolescents with chronic medical conditions (e.g., type 1 diabetes) who are experiencing health disparities. Research interests include the evaluation of multisystem, home- and community-based interventions for high-risk pediatric populations. He is also interested in the role of social risks on health outcomes, implementation science, and capturing the economic value of nontraditional behavioral health intervention models.