Tadej Battelino completed his medical degree at the University of Ljubljana in 1990. He completed a PhD focusing on glucose metabolism in neonatal endotoxic shock in 1996. He completed his clinical fellowship at Loyola University of Chicago, USA, and his postdoctoral fellowship at INSERM, Paris, France.

Professor Battelino is currently Consultant and Head of Department of Endocrinology, UCH-UMC Ljubljana, a clinical pharmacologist, Head, Chair of Pediatrics, and Professor of Pediatrics at Faculty of Medicine, University of Ljubljana. He is PI on several publicly funded research projects in the field of diabetes, endocrinology and metabolism, and was awarded the Slovene national award for research in 2014, Gold medal for research at the University of Ljubljana in 2017, the ISPAD Achievement Award in 2020, the Presidential Medal from Children with Diabetes society in 2022, and the European Society for Pediatric Endocrinology (ESPE) research award in 2023. He was Prof. Jay Skyler visiting professor at University of Florida in Miami, and visiting professor at the University of Rome, both in 2024. Professor Battelino serves on the editorial boards for the journals Diabetes Care, Diabetes Technology and Therapeutics, Acta Diabetologica, Hormone Research, and was Editor for the European Journal of Endocrinology from 2009 to 2015. He received public finding from the Slovenian Research and Innovation Agency (ARIS), the European Union, and the National Institutes of Health. He has authored or co-authored over 400 papers in international peer-reviewed journals and participated chapters to several international books. His h index is 70.

Professor Battelino is a member of numerous professional associations including the American Diabetes Association (ADA), European Society for Paediatric Endocrinology (ESPE) and the International Society for Pediatric and Adolescent Diabetes (ISPAD), for which he served as President for the 35th Annual Congress. He served on the European Association for the Study of Diabetes (EASD) council, and is co-organizer of twenty annual meetings of the Advanced Technologies and Treatment of Diabetes - ATTD. He serves as Chair-Elect International Diabetes Federation – Europe (IDF-EU 2022-2024). He is elected Honorary member of the Italian Society for Pediatric Endocrinology and Diabetology (SIEDP), the Hellenic Society of Pediatric and Adolescent Endocrinology (EEPEE), and received the Japanese Society for Pediatric Endocrinology (JSPE) 2023 International Lecture Prize. Professor Battelino is a member of the Slovenian Medical Academy, Slovenian Academy of Sciences and Arts (SAZU), and the European Academy of Sciences and Arts.

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