Marcela Horvitz-Lennon

Photo of Marcela Horvitz-Lennon
Natural Scientist; Professor, Pardee RAND Graduate School
Boston Office


M.D. in medicine with intern, Pontifical Catholic University; M.P.H., Johns Hopkins University


Marcela Horvitz-Lennon is a physician scientist at the RAND Corporation and a professor at the Pardee RAND Graduate School. She is also a member of the medical staff at the Veterans Health Administration and adjunct faculty at the University of Pittsburgh Medical School. Previously, Horvitz-Lennon was affiliated with the Center for Multicultural Mental Health Research at Cambridge Health Alliance, and the Department of Health Care Policy at Harvard Medical School, and with the Chilean Ministry of Health. She has conducted mental health services and policy research on utilization and quality of care for adults with mental illnesses. Her main research interests are racial/ethnic and geographic disparities in care; quality and value of publicly-funded care; Medicaid policy; use, safety, and costs of psychiatric drugs; underuse and overuse of mental health interventions; diffusion of innovations; and global mental health. Her research is mainly focused on people with schizophrenia and other severe mental illnesses, including those who are homeless. Horvitz-Lennon has served and continues to serve as principal investigator or co-investigator of NIMH and other federally-funded research. Horvitz-Lennon earned her M.D. in Santiago, Chile, and completed her psychiatric residency training at the University of Maryland Medical School and a fellowship in community psychiatry at Johns Hopkins Medical School. She earned a Masters degree in public health at Johns Hopkins University School of Public Health.

Recent Projects

  • An In-Depth Investigation of Racial & Ethnic Disparities in Schizophrenia Care
  • Medicare Part D Cost-Sharing & Treatment of Mental Disorders among Disabled Dually Eligible Beneficiaries
  • Evaluation of the SAMHSA Primary and Behavioral Health Care Integration Grant Program
  • Identifying and Addressing Health Care Disparities among Severely Mentally Ill Latinos