She then completed her residency in Psychiatry at the Payne Whitney Psychiatric Clinic in the New York Hospital-Cornell Medical Center.
[1] Upon completing her formal education, Oquendo joined the faculty at Columbia University and co-established the Oquendo-Gould-Stanley-Posner classification system to identify sub-categories of suicidal behavior.
[2] In 2003, Oquendo and her colleagues were commissioned by the Food and Drug Administration to develop a classification system to examine suicide-related events in the data.
[5] In September 2014, Milton Wainberg and Oquendo launched a fellowship program to promote international training in mental health implementation research in Mozambique.
[8] Oquendo left Columbia in 2017 to become the new chair of the Department of Psychiatry in the Perelman School of Medicine at the University of Pennsylvania.