Dr. Kaasinen is Professor of Neurology at the University of Turku, and Chief Physician at Neurocenter of Turku University Hospital.

He was appointed as Adjuct Professor of Neurology in 2011, received special competence in medical education in 2016, and was appointed as full Professor of Neurology in 2021. 

Dr. Kaasinen is a clinical neurologist and a movement disorder specialist who received his medical degree from the University of Turku in 1996. This was followed by a PhD focusing on brain dopamine PET imaging of Parkinson's disease in 2000. He did his postdoctoral training in 2003-2004 in the University of Groningen, The Netherlands. 

Since 2004, he has led a research group that focuses on function brain PET and SPECT neurotransmitter imaging in Parkinson's disease, other movement disorders and behavioral addictions. His group is involved in several project that aim to improve diagnostics and treatment of neurological movement disorders. 

Main focus of research is brain function and dysfunction in relation to neurotransmitters, addictions and movement disorders.

Dr. Kaasinen has been involved in curriculum planning and implementation of neurology courses since 2013. He is a personal teacher mentor for medical students and has supervised of several PhD students.