Meet Our Team | Mood Disorders Research Program | Department of Psychiatry and Behavioral Sciences | UC Davis Health

Manpreet K. Singh, M.D., M.S.

Robert H. Putnam Endowed Chair in Bipolar Disorders Research and Treatment; Program Director
Expert in pediatric mood disorders, translational research, and early intervention.

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James Bourgeois, O.D., M.P.A., M.D.

Health Sciences Clinical Professor, Psychiatry and Behavioral Sciences
Focuses on patients’ systemic medical illness and psychiatric illness simultaneously, and works collaboratively with other physicians to provide integrated behavioral health care. 

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Debra Kahn, M.D.

Director of the Advanced Psychiatric Therapeutics Clinic, Professor, Clinical Psychiatrist
Specializes in providing novel treatment modalities such as transcranial magnetic stimulation (TMS) and esketamine nasal spray. 

Katharine Marder, M.D.

Associate Physician
Research and clinical interests in treatment-resistant depression. 

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John Claro Onate, M.D.

Professor, Psychiatry and Behavioral Sciences
Research focuses on interventional psychiatry procedures and techniques for mood disorders including depression and bipolar disorder. 

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Matthew Settle, N.P.

Nurse Practitioner 
Involved in direct patient care and clinical research coordination.

Professor, Psychiatry and Behavioral Sciences; MIND Institute

Leads the Silverman Lab, researching the biology of neurodevelopmental disorders.

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Julie Schweitzer, Ph.D.

Professor, Psychiatry and Behavioral Sciences; Director, AIR Program at the MIND Institute

Focuses on attention, impulsivity, and self-regulation in youth.

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Amanda Guyer, Ph.D. 

Professor, Human Development and Family Studies; Co-Director, Center for Mind and Brain

Studies emotional and cognitive development in children and adolescents.

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Nicole Schultz, Ph.D.

Clinical Professor, Psychiatry and Behavioral Sciences

Schultz is a clinical psychologist who provides evidence-based psychotherapy to adults. Her research interests include understanding environmental variables that systematically influence self-reported and actual drinking behavior (e.g., drinking context, peer groups), motivational models of substance use behavior, and prevention and intervention for substance use among young adults with focused interests in leveraging technology to improve assessment and inform adaptive interventions to reduce in-the-moment risks.

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Nikos Karakashian, M.D.

Psychiatrist, Psychiatry and Behavioral Sciences

Karakashian is a board-certified psychiatrist and family practitioner in Sacramento, California. He is affiliated with UC Davis Medical Center and Sacramento Veterans Affairs Medical Center.

Sally Bae, M.D.

Research Track Resident
Focus: Transcranial magnetic stimulation (TMS)

Jake Branchini

ARC-MD Medical Student
Focus: Substance use disorders and advanced psychiatry interventions

Emma Hare, D.O.

Child & Adolescent Psychiatry Fellow 
Focus: Measuring aggression in youth

Maitri Khanna

Ph.D. Neuroscience Student
Focus: Neurobiology of placebo response using neuroscience tools including EEG and MRI in the context of clinical trials

Natalia Khodhayari, Ph.D.

Neuroscience Postdoctoral Fellow
Focus: Mechanisms of attentional control and regulation using EEG and MRI tools

Zachary Springs

ARC-MD Medical Student
Focus: Substance use disorders and advanced psychiatry interventions

Maria Fermanda Parada Valencia

UC Davis MIND Institute International Training Program in Neurodevelopmental Disabilities Fellow 
Focus: Attentional dysfunction and family interventions in youth

Jacqueline Williams, M.D.

Adult Psychiatry Resident
Focus: Clinical trial research 

Hosanna Kim, M.D.
Adult Psychiatry Resident

Focus: Neurodevelopment