Prof. Dr. med. Harald Stossier (born 1957) trained as an electrical engineer before accepting his appointment and studying medicine at the University of Innsbruck and Graz (1980 – 1987). During his studies he already dealt with complementary medical methods. Gradually, he completed training in manual medicine, homeopathy, neural therapy, Functional Myodiagnostics/Applied Kinesiology, Orthomolecular Medicine and in Diagnostics and Therapy according to F. X. Mayr. In the course of his professional work with Dr. Erich Rauch, a direct student of Dr. Mayr, he developed a special affinity for the latter and developed it further to Modern Mayr Medicine and the Mayr Principle.

After initial work at the Dellach Health Centre Golfhotel, which Stossier took over from Rauch in 1996, he founded VIVAMAYR together with his wife Dr. Christine Stossier in 2005. A gradual international expansion followed, as another center in Altaussee was established. He served as Medical Director of VIVAMAYR Maria Wörth until the end of 2021.

From 2022 onwards he took over the development of a new Mayr Center in Dilijan, Armenia, Modern Mayr Dilijan, following the principles of Modern Mayr-Medicine and bringing these therapies into Armenia

Since 2024 he is scientific advisor at BLEIB BERG, F.X.Mayr retreat in Bad Bleiberg.

In addition to his medical work, Dr. Stossier is also active in the training of physicians. His teaching includes Modern Mayr Medicine, Orthomolecular Medicine and Functional Myodiagnostics. In 2016 he was appointed Professor of Applied Kinesiology in Rehabilitation at Ludes University in Lugano.

As (co)founder of the Department of Complementary Medicine and its long-standing consultant in the Carinthian and Austrian Medical Chambers, he did more than 20 years voluntary service in the Austrian Medical Chamber, especially on the board for complementary medicine, to integrate complementary methods in daily practice and foster cooperation focused on the establishment of complementary methods in the association by the award of complementary medicine diplomas. During this period, more than ten different methods received official accreditation with the Austrian Medical Association.