United States Public Health Service (PSH) Law and Legal Definition

The United States public health service (PHS) was constituted under the Public Health Service Act of 1944. PHS is the primary division of the U.S. Department of Health and Human Services and consists of all agency divisions of health and human services and the commissioned corps. The assistant secretary for health (ASH) supervises the PHS. The main aim of PHS is to improve health care.