The Indian Health Service (IHS) is a federal agency within the Department of Health and Human Services that provides healthcare services to American Indians and Alaska Natives. The agency was established in 1955 and is headquartered in Rockville, Maryland. The IHS operates a network of hospitals, clinics, and health stations across the United States, and provides a wide range of services including primary care, dental care, mental health services, and substance abuse treatment. The agency also works to improve the health of American Indian and Alaska Native communities through public health initiatives and disease prevention programs. The IHS is committed to providing high-quality, culturally sensitive healthcare services to its patients.