About Me


Dr. Onate as a faculty member at the University of California Davis School of Medicine supervises Psychiatry, Combined Internal Medicine and General Internal Medicine residents; addressing the coordination of medical care in uninsured and indigent patients with mental illness and substance disorders.  He is a recipient of the American Psychiatric Association’s Nancy C.A. Roeske, M.D., Certificate of Recognition for Excellence in Medical Student Education. He has published several articles and book chapters in the field of primary care preventative health and psychiatry.  He has spoken nationally at on the subject of integration, collaboration in medical and mental health care, addiction medicine, sports psychiatry, and on exercise as a treatment for depression. Dr. Onate has appeared on the PBS medical program “Second Opinion”.  He is strongly interested in the collaboration and integration of psychiatric care and substance abuse treatment in primary care, HIV medicine and Hepatitis C and exercise in the treatment of mental illness.  He is the faculty advisor for the UCDSOM Chapter of the Gold Humanism Honor Society.


1996 Biology, University of Southern Mississippi
2000 University of Mississippi School of Medicine

Post Graduate Medical Training

2005 Combined Internal Medicine and Psychiatry, Rush University Medical Center, Chicago, IL

Board Certification

ABIM-Internal Medicine