Sibley Memorial Hospital | 10,194 followers on LinkedIn. Mission: To provide excellence and compassionate care — every person, every time. | Sibley Memorial Hospital, a member of Johns Hopkins Medicine, in Northwest Washington, D.C., has a distinguished history of serving the community since its founding in 1890. As a not-for-profit, full-service, 318-bed community hospital, Sibley offers medical, surgical, obstetric, oncology and orthopaedic treatment, intensive care, skilled nursing inpatient services and a state-of-the-art 24-hour emergency department. Sibley’s campus is also home to Johns Hopkins Kimmel Cancer Center, the Johns Hopkins National Proton Therapy Center, Grand Oaks — an assisted living residence — a medical building with physician offices, and an ambulatory surgery and imaging center.