The Hospital Group Diaconesses Croix Saint-Simon was established in 2003 from the merger of two historic hospitals in Paris. It serves as a significant healthcare provider in the eastern part of Paris, offering a wide range of medical, surgical, and obstetric services. The hospital operates under a non-profit model, ensuring that all revenues are reinvested into the hospital for the benefit of patients​ (Hopital DCSS)​​ (Etablissements FHF)​.

• Oncology
• Gastroenterology
• Geriatrics
• Internal Medicine
• Rheumatology
• Proctology
• Palliative Care
• Obstetrics and Fertility
• Orthopedic and Trauma Surgery
• Digestive Surgery
• Urological Surgery
• Gynecological Surgery​ (Hopital DCSS)​​ (Wikipédia, l'encyclopédie libre)​.

The hospital emphasizes high-quality patient care and safety, participating in continuous quality improvement programs and adhering to strict medical standards​ (Hopital DCSS)​.

The hospital's mission is to provide comprehensive, high-quality healthcare services while advancing medical research and education. It aims to serve the public interest by reinvesting its profits into enhancing healthcare services, purchasing new equipment, and modernizing facilities​ (Hopital DCSS)​.

The hospital is recognized for its excellence in several specialties, including its high quality of care in surgery, oncology, and maternity services. It is known for pioneering techniques and maintaining high standards in patient care​ (Wikipédia, l'encyclopédie libre)​.