New Alexandria Institute of Medical Science

The New Alexandria Institute of Medical Science is the UNSC Navy's primary hospital, and the premier medical research facility in the Inner Colonies. Located on a five-square-mile campus overlooking the waterfront, the Institute was greatly expanded at the start of the Human-Covenant War. Millions of patients would pass through its halls until the Covenant assault on New Alexandria brought a permanent end to operations.

Size
At its peak, the NAIMS was commanded by a rear admiral who oversaw 38,000 medical personnel with beds for 40,000 patients. Counting off-campus housing, wartime surges could see 60,000 patients calling the NAIMS home. Although the sheer size of the operation posed unique challenges, the UNSC Navy saw fit to concentrate healthcare facilities on a single campus instead of (later in addition to) scattering hospitals and rehabilitation facilities across Reach.

Research
Even before the War, the NAIMS was at the forefront of research into prosthetics and cybernetic augmentation.