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Part of Stadtwerke Lünen GmbH, Klinikum Westfalen GmbH is a German healthcare company that operates four hospitals in the region. The company is based in Dortmund, Germany. The CEOs of the company are Stefan Aust, Michael Kleinschmidt. The company is a significant employer with around 2,800 employees and offers various training programs. The Knappschaft Bahn See, as well as the cities of Lünen and Kamen, are the company's shareholders.

Knappschaftskrankenhaus Bottrop GmbH operates as an acute general hospital. The firm also offers semi-stationary dialysis and neurological rehabilitation services. It is an Academic Teaching Hospital of University of Duisburg-Essen. The company was founded on June 1, 1931 and is headquartered in Bottrop, Germany.

Part of Deutsche Rentenversicherung Knappschaft Bahn See, Rhein-Maas Klinikum GmbH is a hospital located in Wuerselen, Germany. The German company offers modern healthcare services and top-notch medical care in the Aachen region. The company was founded in 1856. The CEO is Jonas Wintz.