Postgraduate Year Four (PGY-4)
James Beckett
Hometown: Mount Vernon, Ohio
Medical School: Johns Hopkins University School of Medicine
Surgical Interest: Transplantation
Researching: Novel mechanisms and therapies for fibrosis
![James Beckett image](/-/media/surgery/images/beckett-james-y1.jpeg?h=300&iar=0&w=240&hash=9B911DF61ED95F2160EC596EF04981B7)
Sophia Y. Chen
Hometown: Honolulu, Hawaii
Medical School: The Johns Hopkins School of Medicine
Surgical Interest: Colorectal Surgery
Researching: Surgical outcomes and health services, cancer immunotherapy
![Sophia Chen](/-/media/surgery/images/sophia240.png?h=300&iar=0&w=240&hash=7D863BDB4EE81E7B438E8E071CF646BA)
Zachary O. Enumah
Hometown: Columbus, Georgia
Medical School: Johns Hopkins University School of Medicine
Surgical Interest: Cardiothoracic surgery
Researching: Global surgery, rheumatic heart disease, refugee studies, conflict and health
![Zachary Emumah](/-/media/surgery/images/zacharyenumah.png?h=525&iar=0&w=376&hash=8C6CBFCF602306BD5ED433770062D7DB)
Colin Fadzen
Hometown: Pittsburgh, PA
Medical School: Harvard-MIT Health, Sciences, and Technology
Surgical Interest: Transplant
Research Interests: Peptide chemistry, drug delivery
![Colin Fadzen](/-/media/surgery/images/fadzen-colin.jpg?h=300&iar=0&w=240&hash=F18917CD3353AADF07F197DAC244DD85)
Carla M. Lopez
Hometown: Chicago, Illinois
Medical School: Yale School of Medicine
Surgical Interest: Pediatric Surgery
Researching: Big data analytics, pharmacoepidemiology, "off-label" and investigational use of drugs, biologics, and surgical devices
![Carla Lopez](/-/media/surgery/images/carla240.png?h=300&iar=0&w=240&hash=574F106F355C92E1759060ACBBF857F4)
David P. Stonko
Hometown: Manchester, Maryland
Medical School: Vanderbilt University School of Medicine
Surgical Interest: Vascular and Trauma Surgery
Researching: Large animal cardiovascular and hemorrhagic shock physiology, vascular innovation and surgical device design, machine learning and mathematical modeling, data visualization and analysis, surgical outcomes
![David Stonko](/-/media/surgery/images/davids240.png?h=300&iar=0&w=240&hash=06F46136520B81154FC886CFDDF6AF51)
Jennine Weller
Hometown: Newton, MA
Medical School: University of Massachusetts Medical School
Researching: clinical predictive modeling, artificial intelligence, causal inference, surgical education
![Jennine Weller image](/-/media/surgery/images/jennieweller240.png?h=300&iar=0&w=240&hash=F6B6EB9C311127A47BAAD2EA74C59F70)
Joy Zhou Done
Hometown: Cupertino, CA
Medical School: Warren Alpert Medical School, Brown University
Surgical Interest: Colorectal
Researching: Clinical outcomes
![Joy Zhou Done image](/-/media/surgery/images/zhou-done-joy.jpg?h=300&iar=0&w=240&hash=2A89EFBE149BBB76849F28BB65E24259)