Dr Moochhala is a nephrologist and physician at the Royal Free Hospital in London. He trained in Edinburgh and Newcastle upon Tyne, and has a special interest in renal physiology particularly with regard to renal stone formation. His PhD was on pyrophosphate transport physiology in the kidney. He runs the Metabolic Renal Stone clinical service at the Royal Free Hospital, and was mentored by Professor Robert Unwin. Shabbir is chief investigator for numerous interventional trials in rare stone disease. He has an interest in rare renal diseases as part of the RADAR (National Renal Rare Disease Registry) network, and is chair of the groups for hyperoxaluria and APRT deficiency. He was the nephrologist member of the NICE Guidelines Committee for renal stones, published in 2019, and is chair of OxalEurope. In 2021 he set up and now chairs the NHS Rare Disease Collaborative Network for hyperoxaluria, aiming to improve the care of patients with this rare disease.