McLean Hospital is a comprehensive psychiatric hospital committed to providing easy access to superior quality, cost-effective mental health services in the Boston area, Massachusetts and beyond. McLean Hospital is accredited by the The Joint Commission (TJC), licensed by the Massachusetts Department of Public Health (DPH), Massachusetts Department of Mental Health (DMH), and certified by the Centers for Medicare and Medicaid Services (CMS). Since 1811, McLean Hospital has been a world leader in the treatment of mental illness and chemical dependency, research into the cause of mental illness and the training of generations of mental health care providers. McLean Hospital is an affiliate of Massachusetts General Hospital and a member of the Partners HealthCare System, Inc., which allows for comprehensive coordination of medical and psychiatric services. A major teaching facility of Harvard Medical School, McLean Hospital maintains the largest program of research in neuroscience and psychiatry of any private psychiatric hospital in the United States. A large program of clinical trials for new psychopharmacological agents allows patients access to many experimental medications before they are generally available. Major clinical programs at McLean Hospital address a broad range of psychiatric illnesses, including: depression, bipolar and psychotic disorders; mood and anxiety disorders; alcohol and drug abuse; dissociative disorders; Alzheimer's disease and other geriatric illnesses; and child and adolescent psychiatric disorders. Each program offers access to a full continuum of care, including acute inpatient care, acute residential care, partial hospitalization, continuing residential care options and outpatient services. McLean's multidisciplinary team responds to each patient's situation with a commitment to individualized treatment that may include individual psychotherapy, group therapy, psychopharmacology and rehabilitation services.