HSK Group (legal entity: HSK Rhein-Main GmbH) represents the Management Holding of HSK, Dr. Horst Schmidt Kliniken GmbH.

Hospitals such as HSK, Dr. Horst Schmidt Klinik, HSK, Wilhelm Fresenius Klinik, HSK Klinik Schlangenbad and HSK Rehaklinik Schlangenbad, are directly managed by HSK Group. Management contracts exist with Altenheime der Stadt Wiesbaden and Clementine Kinderhospital, Frankfurt.

Affiliated Companies such as HSK Service GmbH, HSK Research, HSK Mobile Pflege GmbH, and HSK Akademie, provide services such as catering and facility management, research, nursing at home and education. The integration of those services within the HSK Group guarantees excellent quality standards within all entities of HSK Group.