University of California, Riverside

School of Medicine

Clinical Faculty Biographies

Dr. Roberto Castaños

Health Sciences Assistant Clinical Professor - Psychiatry

Dr. Roberto Castaños

Medical Office

UCR Health - Citrus Tower
3390 University Avenue
Suite 115
Riverside, CA 92501
(844) 827-8000

Academic Office

School of Medicine
University of California, Riverside
Riverside, Calif. 92521
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Contact the medical office by telephone.

Education and Training

  • Residency, Psychiatry, University of California, Irvine School of Medicine, Irvine, California
  • M.D., Texas Tech University School of Medicine, Lubbock, Texas
  • B.S., Neuroscience, minor in Philosophy, University of California, Los Angeles, California
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Dr. Roberto Castaños, M.D., is an assistant clinical professor of psychiatry at the University of California, Riverside School of Medicine and a psychiatrist at the Riverside County Department of Mental Health.

He came to UCR from the UC Irvine School of Medicine's Department of Psychiatry and Human behavior, where he was a resident physician and served as chair of the External Representative and Community Outreach Committee and as a member of the Behavioral Health Medication Safety Committee. He also served on the Graduate Medical Education committee at UCI.

He has previously served as a mentor to medical students and psychiatric residents at Texas Tech's medical school and currently serves as a mentor for medical students and psychiatric residents at both UC Riverside and UC Irvine.

Prior to earning his M.D., he served as a volunteer researcher and research assistant at the University of Southern California's Hastings Thoracic Oncology Laboratory and as a research fellow at the Hastings Thoracic Surgical Laboratory.

He is fluent in both English and Spanish.

Research Interests

Castaños has interests in trans-cultural psychiatry, the treatment of refractory and bipolar depression, and health disparities and access. He has presented posters on "Pharmacogenetic Testing to Illustrate Unique Response to Opiates in Refractory Depression." "A Review of the Challenges of Treating Bipolar Depression," and “Acute, atypical psychosis suggestive of temporal lobe epilepsy following single injection of diphenhydramine and prednisolone” at meetings of the American Psychiatric Association.


  • Intern of the Year, UC Irvine Psychiatry, 2011.

Selected Publications

  • Sievers EM, Bart RD, Backhus LM, Yuanguang L, Starnes M, Castaños R, Starnes VA, Bremner RM. "Evaluation of cyclooxygenase-2 inhibition in an orthotopic murine model of lung cancer for dose-dependent effect". J. Thorac. Cardiovasc. Surg. 2005; 129: 1242-1249.
  • Backhus LM, Sievers EM, Lin GY, Castaños R, Bart RD, Starnes VA, Bremner RM. "Peri-operative COX-2 inhibition reduces tumor cell adhesion and metastatic potential of circulating tumor cells in NSCLC". J. Thorac. Cardiovasc. Surg. 2006; 132:297-303.

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