School of Medicine


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  • Alexander Eckehart Urban

    Alexander Eckehart Urban

    Associate Professor of Psychiatry and Behavioral Sciences (Major Laboratories and Clinical Translational Neurosciences Incubator) and of Genetics

    Current Research and Scholarly InterestsComplex behavioral and neuropsychiatric phenotypes often have a strong genetic component. This genetic component is often extremely complex and difficult to dissect. The current revolution in genome technology means that we can avail ourselves to tools that make it possible for the first time to begin understanding the complex genetic and epigenetic interactions at the basis of the human mind.

  • Alfredo M. Valencia

    Alfredo M. Valencia

    Postdoctoral Scholar, Psychiatry

    BioFreddy Valencia is currently a Stanford Science Fellow and Ford Foundation Postdoctoral Scholar at Stanford University. Informed by human genetics and by combining biochemical, structural biology, and functional genomics investigative techniques, his work aims to uncover the molecular basis of human disorders and disease. His current research at Stanford University aims to investigate and characterize chromatin regulatory processes in human brain development and neurodevelopmental disorders.

  • Keara E. Valentine

    Keara E. Valentine

    Clinical Assistant Professor, Psychiatry and Behavioral Sciences

    BioKeara E. Valentine, Psy.D., is a clinical assistant professor at Stanford University School of Medicine in the Psychosocial Treatment Clinic and OCD Clinic, where she specializes in the assessment and treatment of OCD and related disorders. Dr. Valentine utilizes behavioral-based therapies including Cognitive Behavioral Therapy (CBT) and Exposure and Response Prevention (ERP) with children, adolescents, and adults experiencing anxiety-related disorders.

    Dr. Valentine completed an APA accredited pre-doctoral internship at Alexian Brothers Behavioral Health Hospital, where she complete a rotation in OCD and anxiety disorders and a rotation in Eating Disorders. Dr. Valentine has experience working with individuals with OCD, anxiety, and/or eating disorders at various levels of care including outpatient, partial hospitalization, residential, and inpatient.

  • Peter Johannes van Roessel

    Peter Johannes van Roessel

    Clinical Associate Professor, Psychiatry and Behavioral Sciences

    BioDr. Peter van Roessel, MD PhD, completed his MD at Stanford University and his residency training in psychiatry at Columbia University and the New York-Presbyterian Hospital in New York City, with additional training in psychodynamic psychotherapy (TFP) via the Columbia University Center for Psychoanalytic Training and Research. Prior to joining the clinical faculty at Stanford, he worked for several years as Associate Director of the general research unit of the New York State Psychiatric Institute, a premier state-funded research hospital affiliated with Columbia University.

    At Stanford, Dr. van Roessel sees adult mood and anxiety disorders outpatients through the Assessment Clinics and participates in resident training and patient care as director of the resident Continuity Clinic and as a supervisor in psychodynamic psychotherapy. He additionally directs the third-year resident curriculum in psychopathology and psychopharmacology. As a member of the department's Rodriguez Translational Therapeutics Lab, he sees individuals with obsessive-compulsive spectrum disorders for evaluations and research-protocol driven clinical treatment and contributes to and leads clinical neuroscience studies pioneering rapid-acting interventions in OCD. Clinically motivated research interests include the nature and neural correlates of metacognitive ‘awareness’ (insight) in OCD and related disorders, and particularly the relationship of awareness to mechanisms of attentional control.

    Dr. van Roessel pursued research training in basic neuroscience prior to his clinical training, completing an MPhil in Biology via the Open University, UK, for research performed at the Max Planck Institute for Developmental Biology in Tübingen Germany, and a PhD in molecular and developmental neurobiology at the University of Cambridge, UK. He has contributed to work in the lab of Dr Julia Kaltschmidt (Stanford) on studies of GABAergic/Glutamatergic interneuronal circuity in mouse. He received a 2018 NARSAD Young Investigator Award to pursue study of nitrous oxide as a rapid-acting treatment for OCD, he was a 2020-2022 Miller Foundation Fellow, and from 2020 to 2022 was a Advanced Fellow in Mental Illness Treatment and Research via the Sierra Pacific Mental Illness Research, Education, and Clinical Center of the Palo Alto VA. Dr. van Roessel is a Fellow of the American Psychiatric Association and a member of the American College of Psychiatrists.