Mathias Haarhaus holds currently positions at Diaverum AB, a leading global dialysis provider, as Corporate Head of Science and Research, Country Medical Director, Sweden, and Medical Director, Stockholm, Sweden. He is also Consultant in Nephrology at Karolinska University Hospital, where he leads the Bone and Mineral Program, and is affiliated researcher at the Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet, and the Department of Clinical Chemistry and Department of Biomedical and Clinical Sciences, Linköping University.

After medical studies at the Free University, Berlin, and the University of Witten/Herdecke, Germany, Mathias specialized in Internal Medicine in 2004 and in Nephrology in 2005 at Linköping University Hospital, Sweden. Since 2006 he is nephrologist at Karolinska University Hospital and since 2017 he works at Diaverum. In 2014, he presented his PhD thesis “Bone alkaline phosphatase isoforms in chronic kidney disease – mineral and bone disorder” at Linköping University. In his current research, Mathias Haarhaus focuses on mineral and bone disorders, fractures, and cardiovascular complications in chronic kidney disease. As Head of Science and Research at Diaverum AB, Mathias Haarhaus explores prognostic factors for health-related outcomes and quality of life and innovative interventions to improve these outcomes in dialysis and pre-dialysis patients.

Mathias Haarhaus is member of the Swedish Society of Nephrology and the European Renal Association. He holds a position in the Guidelines Committee of the Swedish Society of Nephrology, is board member of the European Renal Association CKD-MBD Working Group, and is board member of the European Renal Osteodystrophy Network.