Benjamin D. Medoff, MD
Associate Professor of Medicine, Harvard Medical School
Dr. Medoff received his B.S. from Yale College and his M.D. from Harvard Medical School. He completed his residency in Internal Medicine at MGH where he also served as Chief Resident, and then completed his training in Pulmonary and Critical Care in the Harvard Combined Fellowship Program. Dr. Medoff has run his lab for the last 20 years. In addition to his research program, Dr. Medoff co-directs a T32 focused on pulmonary immunology and allergy research and remains active clinically.
Jehan W. Alladina, MD
Jehan was born and bred in Texas and completed her medical school training at Baylor College of Medicine in Houston. She moved up to Boston for Internal Medicine residency at MGH and completed her Pulmonary and Critical Care Fellowship training at the Harvard combined fellowship program.
She joined the Medoff lab in 2017 during her fellowship and is now on faculty at MGH where she sees patients in pulmonary clinic, attends in the ICU and on the pulmonary consult service, and pursues translational research in asthma immunology. In particular, she is interested in the role of dendritic cells in shaping the local response to allergen and her work directly compares the airway immune landscape of allergic asthmatics to individuals who have allergies without pulmonary disease. She enjoys exploring New England (recently on the back of a tandem bicycle) and eating plenty of seafood.
Roxene Clarke
Educated in Jamaica, Roxene is now the colony manager for the Medoff lab. Outside of work, you can find her taking pictures of nature and her cats. Did we mention cats? She loves cats!
Tristan G. Kooistra, MD
Tristan grew up playing soccer in South Carolina before attending MIT where he obtained an undergraduate degree in Biology studying innate immune signaling using genetic modeling in C. elegans. During medical school at the joint Harvard-MIT HST program, he studied the production of small non-coding RNAs from enhancers. He completed his medical training in Internal Medicine residency and Pulmonary/Critical Care fellowship at BIDMC/MGH. He joined the Medoff lab in 2018 to investigate epithelial-immune interactions involved in asthma and became faculty as a physician/scientist in 2020. Outside of the lab, he enjoys running, hiking, biking, and spending time with his family.
Sophia Paglia
Sophia grew up in Pennsylvania before attending Boston College, where she earned a B.S. in Neuroscience. She joined the Medoff Lab in June 2026, where she assists Dr. Kooistra in studying the role of the airway epithelium in establishing the adaptive immune response in allergic airway inflammation. Outside the lab, Sophia enjoys swimming, listening to audiobooks, and sewing. In the future, she hopes to pursue a career in neurobiology or immunology.
Trong Nguyen
Trong is a native Vietnamese who completed his undergraduate at University of Massachusetts Boston. He joined the pulmonary division in 2016 as a research technician and has since taken on the role of a research technician in the Medoff lab. Currently, Trong is focused on assisting Dr. Knipe on her quest of studying the mechanisms of pulmonary fibrosis. In his free time, Trong enjoys playing tennis, basketball, computer games and spending time with his family.
Tresa Rani Sarraf, PhD
Tresa's educational journey began in Rajasthan, India, where she completed her schooling. She then pursued her passion for science and earned her M.Sc. in Zoology from Kalyani University in West Bengal, India. Her academic pursuits led her to delve into the intricate world of Wnt signaling in antigen processing and presentation at the Indian Institute of Chemical Biology where she completed her Ph.D.
Throughout her doctoral studies, crosstalk of innate and adaptive immune systems held a special fascination for her. She joined the Medoff lab to investigate the intricacies of immune cell function in asthma.
Outside the realm of research, Tresa finds solace in the melodious tunes of Bollywood songs, which provide a delightful counterpoint to her rigorous scientific pursuits.
Keller Dorgan
Keller is a recent graduate from the University of Massachusetts Amherst, where he earned a B.S. In Neuroscience. He joined the Medoff Lab in 2026 and is working as a technician under Dr. Jehan Alladina, investigating the role of T2 immunity in Acute Respiratory Distress Syndrome. Outside of MGH he enjoys soccer, playing the clarinet, reading, and exploring Boston.
Alumni
Rachel S Knipe, MD – Assistant Professor of Medicine, MGH/Harvard Medical School
Patricia Brazee, PhD – Instructor, MGH
Boni Xiong, MS - Co-Founder at Altheda Medical Center
Katharine Black, MD – Instructor in Medicine, MGH
Josalyn L Cho, MD – Associate Professor of Medicine, University of Iowa
Ravi Ramadas, DVM – Principal and Scientist at Jounce Therapeutics, Inc.
Marly Roche, PhD – Research Scientist at Blueprint Medicines
Benjamin Causton, PhD – Principal Scientist at Visterra, Inc
Daniela Moutinho Dos Santos, PhD – Principal Scientist at Boehringer-Ingelheim
Yang Yang, PhD - Scientist at Dana-Farber Cancer Institute
Ingo Ganzleben, MD - Physician-Scientist, Department of Medicine 1, University Hospital Erlangen, Germany
Alnardo Lora, MD - Physician, Jupiter Florida