She was the interim Secretary of Health of Puerto Rico in March 2020 and had previously served as the undersecretary of Rafael Rodríguez Mercado.
Quiñones de Longo completed a bachelor's degree in premedical studies at the Interamerican University of Puerto Rico.
[1] Starting in 1973, Quiñones de Longo worked as a pediatrician instructor at the University of Puerto Rico School of Medicine.
[1] In the 1980s, Quiñones de Longo assisted the Puerto Rico Department of Health with pediatric centers for children with special needs and hospital accreditation.
[1] While serving as undersecretary in 2020, Quiñones de Longo reported Department irregularities to Secretary Rafael Rodríguez Mercado.