4. Johns Hopkins Hospital
The Baltimore-based institution—founded in the late 1800s by the banker, philanthropist and abolitionist it is named for—houses Johns Hopkins University’s School of Medicine, the second-highest-rated medical school in America (after Harvard Medical School), offering among the most advanced clinical research in the world.
The hospital’s health system—including six academic and commercial hospitals, four health care and surgery centers and over 40 patient care locations—receives up to 3 million patients annually. A leader in neurosurgery and child psychiatry, the Hopkins Gender Identity Clinic was also the first in the United States to complete male-to-female reassignment surgery.