Clinical Senior Lecturer at the Wellcome Centre for Mitochondrial Research at Newcastle University. Yi is an honorary consultant neurologist with interests in mitochondrial medicine and neurogenetic disorders. Between 2017 and 2021, he held a National Institute for Health Research Academic Clinical Lectureship and was awarded the Academy of Medical Sciences Starter Grant for Clinical Lecturer in 2019. He has collaborated with NHS and international colleagues to develop clinical practice guidelines for adult patients with mitochondrial disease.