Cheong Fei Wen obtained her Bachelor Degree in Biomedical Science (with distinction) from Universiti Malaya (UM), Malaysia. She passed her PhD with distinction and is currently holding the post of senior lecturer in the Department of Parasitology, Faculty of Medicine, UM.

Since PhD study, she explored into several malaria-related aspects, including protein expression of the Plasmodium knowlesi merozoite surface proteins; immunogenicity study using animal model; and epitope mapping. Her current research interests include phenotypic and genotypic measures on Plasmodium sp. resistance against anti-malarials, immunogenicity profiling of potential malarial vaccine candidates, and genome engineering in P. knowlesi using CRISPR-Cas9 system.

With her deep passion in research, she has been successfully selected and awarded to attend several international workshops/courses including Ungku Omar-Newton Fund Researcher Links Workshop: Neglected Disease in SEA: Building Capacity in Epidemiological Modelling (University of Malaya, Malaysia & Imperial College London, UK) and Wellcome Genome Campus Advanced Course: Malaria Experimental Genetics (WGCAC, UK). She has also obtained and be part of 10 research grants, including UM Research Fund Assistance (BKP), UM Research Excellence Grant (UMREG), Postgraduate Research Fund (PPP), Frontier Research Grant (FRG), Fundamental Research Grant Scheme (FRGS), and Long Term Research Grant Scheme (LRGS), with total amount exceeding RM 2 million. With that, she has published about 30 articles in ISI-indexed journals. 

She is currently the assistant editor of the Journal of Health and Translational Medicine (JUMMEC), associate editor of Asia Pacific Journal of Molecular Biology and Biotechnology (APJMBB), and editorial board member of Tropical Biomedicine. She was the council member for Malaysian Society of Parasitology and Tropical Medicine (MSPTM) in 2019-2020. 

She received excellent service certificate and excellent service award, UM in 2019 and 2024, respectively. She has been appointed as Programme Coordinator and assisted the department to develop a new Master by Coursework programme (Master of Medical Parasitology and Entomology, MMPE). She is also the course coordinator for courses in MMPE and Biomedical Science Programme. She is the committee member of Quality Assurance Programme - Quality Committee, Faculty of Medicine (FOM) from 2020. With her interest in academic curriculum, she has also been appointed as Programme Quality Assurance Expert (Pro-QAE) of FOM in 2021, and Pro-QAE of UM in 2024 to assist in programme curriculum related matters. In 2025, she has been appointed as FOM Deputy Quality Manager (ProQAE and stakeholders' feedback).