Our Team


  • Jason Adelman, MD, MS

    Executive Director/Chief Patient Safety Officer

    Headshot of Jason Adelman.
  • Jo Applebaum, MPH

    Director of Research Science

    Jo Applebaum, MPH is Director of Research Science, Patient Safety Research at Columbia University Irving Medical Center/NewYork-Presbyterian Hospital. Jo oversees the Center for Patient Safety Research’s portfolio of grant-funded and hospital-supported research projects, guiding the team on research design, methodology, and interpretation and dissemination of results. She has expertise in quantitative, qualitative, and mixed-methods approaches. Previously, Jo was Director of Research and Evaluation at Community Pediatric Programs, a federally qualified health center program affiliated with Montefiore Medical Center and Children’s Health Fund, where she led the development, implementation, and evaluation of the Center’s health initiatives. Jo received her MPH from the Mailman School of Public Health at Columbia University and BA from Johns Hopkins University.

    Headshot of Jo Applebaum, MPH.
  • I-Fong Lehman, DrPH, MS


    Dr. Lehman is the Director of the Center for Patient Safety Research where she is responsible for overall operations including grant and contract activities. Previously, she was the Director of Quality and Patient Safety at NewYork-Presbyterian Hospital/Columbia University overseeing Columbia Milstein, The Allen Hospital and Lawrence Hospital. Prior to joining NYPH, she was the Director of Clinical Communities at The Johns Hopkins’ Armstrong Institute for Patient Safety and Quality. She earned her DrPH in Health Policy and Management from Johns Hopkins School of Public Health and her MS in Health Policy and Administration from the Harvard School of Public Health.


  • Yelstin Fernandes, BS


    Yelstin joined the Center for Patient Safety Research in 2018 as a Programmer.  He is responsible for organizing, analyzing, and leveraging healthcare data in order to develop programmatic tools that support the team's ongoing research and operational duties.  Yelstin comes from a background in biology research holding a B.S. in Microbiology from the University of Rochester.  Additionally, he was exposed to patient care and safety as an EMT-B, and began to code as a hobby.  He is excited to now be using data analytics to reduce medical errors.  In his spare time Yelstin enjoys baseball, cooking, and travel.

    Headshot of Yelstin Fernandes, BS.
  • Chelsea Redman, MPH

    Program Coordinator

    Chelsea Redman, MPH is responsible for supporting grant-funded research projects, including the multisite adoption of patient photos in the electronic medical record as a tool to prevent wrong-patient errors, and serves as the Administrator for the Patient Safety Research Fellowship in Hospital Medicine. She has experience in qualitative methods, program management and evaluation. Previously Chelsea worked for Memorial Sloan Kettering Cancer Center in clinical operations and physician practice management. Chelsea received her BS from Georgetown University and MPH from the Mailman School of Public Health at Columbia University. She is currently pursuing her Doctor of Public Health (DrPH) in Health Policy and Management, Quality and Patient Safety at Johns Hopkins Bloomberg School of Public Health with research interests in health disparities, medical errors, and patient safety culture. 

  • Patrick Robles, MPH

    Program Coordinator

    Patrick Robles, MPH supports multiple grant-funded research projects, including an R01 grant from AHRQ for the development and validation of multiple automated, objective measures for medication order errors. Patrick has experience in qualitative methods and survey development. Previously he supported research with Columbia University's Student Health Services, examining students' well-being and for Memorial Sloan Kettering Cancer Center, researching investigational drugs for melanoma. Patrick received his BA from St. John's University and MPH from the Mailman School of Public Health at Columbia University. His research interests include decision-making and behavioral economics in clinical settings.

  • Chanel Rojas, BS

    Clinical Coordinator

    Chanel Rojas, BS is a Clinical Coordinator at the Center for Patient Safety Research. Chanel supports a multi-site study focused on reducing wrong-patient errors among newborns in neonatal intensive care units through the use of pictographs, an innovative newborn identifier in electronic health record (EHR) systems. Chanel is currently attending the Mailman School of Public Health at Columbia University for her MPH.

  • Sandra Yoshida

    Grants Manager

    Sandra Yoshida, MA is Grants Manager for the Division of General Medicine. She has a background in biology and education. She is currently pursuing an MS in Strategic Communication through Columbia SPS. In her spare time she enjoys hiking, cooking and nature.

Patient Safety Research Fellows

  • Pooja Reddy, MD

    (2019 – 2021)

    Dr. Reddy is a Pediatric Patient Safety Research Fellow. She graduated from Emory University School of Medicine in 2015 and completed residency at the Children’s Hospital at Montefiore in 2018. She is also concurrently training as a Pediatric Gastroenterology fellow in her second year. Her interests include patient safety, efficient use of medical resources and cost reduction in medicine.

  • Amanda Rosen, MD


    Dr. Rosen is a research fellow within the Division of General Medicine.  She graduated from Northwestern University's Feinberg School of Medicine in 2017 and completed her internal medicine residency at New York Presbyterian- Columbia University Medical Center in 2020.  Her research interests include biomedical ethics, patient safety, and critical care.  

  • Danielle Carter, MD


    Dr. Carter is a clinical research fellow within the Division of General Medicine. She graduated from University of Chicago Pritzker School of Medicine and completed internal medicine residency at New York Presbyterian-Columbia University Medical Center in 2020. Her research interests include patient safety, reducing hospital acquired infections, and health IT systems. 

  • Anne Grauer, MD


    Dr. Grauer is a Patient Safety Research Fellow.  She graduated from The Donald and Barbara Zucker School of Medicine at Hofstra/Northwell in 2016.  Dr. Grauer then went on to complete her internship at NYU School of Medicine and residency at New York-Presbyterian Hospital-Weill Cornell Medical Center in 2020.  Her research interests include patient safety, EHR optimization and the use of Clinical Decision Support tools. 

Past Fellows

  • Jerard Z. Kneifati-Hayek, MD, MS

    (2018 – 2020)

    Dr. Kneifati-Hayek is the first Hospitalist Patient Safety Research Fellow. He graduated from Weill Cornell Medicine in 2014 and was a Howard Hughes Medical Institute research fellow. Dr. Kneifati-Hayek finished his residency in 2017 at New York Presbyterian-Weill Cornell Medicine. His interests include patient safety and quality, and health outcomes research.


Program Advisors

Columbia University Irving Medical Center
  • Donald Landry, MD, PhD
  • Graham Barr, MD, DrPH
  • George Hripcsak, MD, MS
  • Steven Shea, MD, MS
  • Melissa Stockwell, MD, MPH
NewYork-Presbyterian Hospital
  • Wilhelmina Manzano, MA, RN
  • Robert Green, MD, MPH
  • Daniel Barchi, MEM
  • Laureen Hill, MD, MBA
  • Katherine Heilpern, MD
NewYork-Presbyterian Hospital Queens
  • Joseph Cooke, MD
Harvard University
  • Hojjat Salmasian, MD, PhD
Albert Einstein College of Medicine
  • William Southern, MD, MS