Matthias J. Müller

Oberbergkliniken GmbH engages in the operation of acute care clinics. It specializes in the medical and psychotherapeutic treatment of patients that suffer from mental, psychosomatic, and psychiatric diseases. The company was founded by Edda Gottschaldt and Matthias Gottschaldt in 1988 and is headquartered in Berlin, Germany.

Oberberg GmbH engages in the management and operation of hospitals. It provides medical and healthcare services in the fields of psychiatry, psychotherapy, and psychosomatic medicine. The company was founded by Matthias Gottschaldt in 1984 and is headquartered in Berlin, Germany.

Part of Oberbergkliniken GmbH, Xenios Management GmbH is a private specialty clinic in the fields of psychiatry, psychosomatics, and psychotherapy. The company is based in Berlin, Germany. The CEOs are Matthias J. Müller, Ilmarin B. Schietzel. The German company was founded in 1988 by Matthias Gottschaldt. Xenios Management was acquired by Oberbergkliniken GmbH on October 01, 2014.

SigFreu Holding GmbH is an investment holding company based in Germany. The private company's main function is to hold investments. The CEOs of the company are Henrik Onne Bodenstab and Ilmarin B. Schietzel.