Section 1. The department of public health, in this chapter called the department, shall have general supervision of the Tewksbury hospital; and may delegate any of its powers and duties to and execute any of its functions by agents appointed for the purpose.

Subject to appropriation and subject to the provisions of sections twenty-five B to twenty-five G, inclusive, of chapter one hundred and eleven, the department shall be authorized to establish at the Tewksbury hospital, with the approval of the superintendent and the trustees, any inpatient or outpatient services, including but not limited to medical, surgical, restorative, rehabilitative or chronic services, mental health and mental retardation services, extended care services, dental services, rehabilitative therapy services, family planning services, services for treatment of alcoholism and drug addiction, skilled nursing care services, intermediate care facility services, and residency care services.