St. Ann's Hospital is a hospital located opposite Chestnuts Park, on the border of West Green & Harringay in Haringey, north London.
The hospital has until recently been largely a mental health care facility, however, it now also provides outpatient services, which include MRI and ophthalmological services.
It is also houses the headquarters for the Barnet, Enfield and Haringey Mental Health NHS Trust and the Haringey NHS PCT.
The Hospital has a sizeable Mental Health Unit, consisting of an acute assessment ward (Haringey ward; short stay unit (Finsbury ward); Eating Disorders Unit (Phoenix ward); and the Home Treatment Unit (Bruce Caste Unit).