Igancio Bórquez, MA
NYU Langone Health - NYU Grossman School of Medicine – Graduate Research Assistant
Education
PhD Candidate, Epidemiology, NYU Grossman School of MedicineMA, Sociology, Pontificia Universidad Católica de Chile
BA, Sociology, Pontificia Universidad Católica de Chile
Research Interests
Substance use, health services, mental health, criminal justice, treatment, care trajectories BIO
Ignacio Bórquez is a fourth-year doctoral candidate in Epidemiology at New York University Grossman School of Medicine. His research focuses on evaluating and designing policies, services, and interventions for hidden populations, with a particular emphasis on harms related to substance use and drug policy. His current work at the Center for Opioid Epidemiology and Policy examines longitudinal patterns of healthcare utilization among people with opioid use disorders and uses simulation modeling to examine the potential effects of expanding methadone access on population-level health outcomes. Previously, he worked at the Center for Studies on Justice and Society at Pontificia Universidad Católica de Chile and at Horwitz Psychiatric Institute’s Early Psychosis Intervention Program. He earned his BA and MA in Sociology from Pontificia Universidad Católica de Chile. Publications
Recent
Borquez I, Allen B, Basaraba C, Renson A, Moore B, Marshall BDL, Cerda M (2026).
Changes in community-level pedestrian stops following overdose prevention center implementation in New York City: An augmented synthetic control approach
Epidemiology, 37 (5), 667-678. doi: 10.1097/EDE.0000000000002000.
Changes in community-level pedestrian stops following overdose prevention center implementation in New York City: An augmented synthetic control approach
Epidemiology, 37 (5), 667-678. doi: 10.1097/EDE.0000000000002000.
Cherian T, Borquez I, Krawczyk N, Katyal M, Goldfeld KS, Wiewel E, Khan M, Braunstein SL, Murphy SM, Jalali A, Oyemakinde B, Jeng PJ, Rosner Z, MacDonald R, Lee JD, Lim S (2026).
Care trajectories among people with opioid use disorder after release from New York City jails: A state sequence analysis approach
Drug and Alcohol Dependence, 284, 113135. doi: 10.1016/j.drugalcdep.2026.113135.
Care trajectories among people with opioid use disorder after release from New York City jails: A state sequence analysis approach
Drug and Alcohol Dependence, 284, 113135. doi: 10.1016/j.drugalcdep.2026.113135.
Borquez I, Pantaleco B, Brogim G, da Cunha AP, Krawczyk N, Bastos FI (2026).
Emergence of synthetic drugs in South America: Insights from Brazil, Chile, and Colombia
Harm Reduction Journal [Epub 2026 Jun 4]. doi: 10.1186/s12954-026-01480-4.
Emergence of synthetic drugs in South America: Insights from Brazil, Chile, and Colombia
Harm Reduction Journal [Epub 2026 Jun 4]. doi: 10.1186/s12954-026-01480-4.
Krawczyk N, Borquez I, Miller M, Lim SW, Cherian T, Schatz D, Harocopos A, Carter E, Scott M, Henry BF, Frank D, Cerda M, Williams AR (2026).
Characterizing complex opioid use disorder care trajectories and outcomes following acute service utilization: A protocol for a population-based data linkage study
PLoS One, 21 (4), e0345769. doi: 10.1371/journal.pone.0345769. PMCID: PMC13132183.
Characterizing complex opioid use disorder care trajectories and outcomes following acute service utilization: A protocol for a population-based data linkage study
PLoS One, 21 (4), e0345769. doi: 10.1371/journal.pone.0345769. PMCID: PMC13132183.
Borquez I, Bailey K, Laynor G, Toledo L, Bastos FI, Santaella-Tenorio J, Castillo-Carniglia A, Cerda M, Krawczyk N (2025).
Harm reduction services and interventions for people who use drugs (PWUD) in Latin America and the Caribbean (LAC) between 2013-2024: A scoping review protocol
PLoS One, 20 (11), e0334978. doi: 10.1371/journal.pone.0334978. PMCID: PMC12643314.
Harm reduction services and interventions for people who use drugs (PWUD) in Latin America and the Caribbean (LAC) between 2013-2024: A scoping review protocol
PLoS One, 20 (11), e0334978. doi: 10.1371/journal.pone.0334978. PMCID: PMC12643314.
Notable
State sequence analysis of daily methadone dispensing trajectories among individuals at United States opioid treatment programs before and following COVID-19 onset
Addiction, 120 (6), 1207-1222. doi: 10.1111/add.70008. PMCID: PMC12048216.
Borquez I, Krawczyk N, Matthay EC, Charris R, Dupre S, Mateo M, Carvacho P, Cerda M, Castillo-Carniglia A, Valenzuela E (2025).
Substance use and psychiatric outcomes following substance use disorder treatment: An 18-month prospective cohort study in Chile
Addiction, 120 (4), 756-769. doi: 10.1111/add.16731. PMCID: PMC12988487.
Borquez I, Cerda M, Gonzalez-Santa Cruz A, Krawczyk N, Castillo-Carniglia A (2024).
Longitudinal trajectories of substance use disorder treatment use: A latent class growth analysis using a national cohort in Chile
Addiction, 119 (4), 753-765. doi: 10.1111/add.16412. PMCID: PMC11766828.
Mr. Borquez's ResearchGate Profile