André Sonnentag

Prosper-Hospital gGmbH operates hospital. The firm is a owner of HSG-Hospital-Service GmbH (HSG) and HRG-Hospital-Reinigungsgesellschaft mbH (HRG). The company is headquartered in Recklinghausen, Germany.

Krankenhausberatung Juengerkes & Schlueter GmbH provides consulting services to hospitals and companies. Its services include economy and controlling, strategy development and analysis, hospital planning and remuneration negotiations and organizational consulting. The company was founded by Heiko Jüngerkes in 1973 and is headquartered in Ratingen, Germany.