Palomar Health is a health care district in San Diego County, California. It operates Palomar Medical Center in Escondido (opened 2012), Palomar Health Downtown Campus in Escondido, Pomerado Hospital in Poway, and many other locations. California health care districts are a type of special district government that build and operate hospitals and other health care facilities and services. Covering 800 square miles (2,100 km2), Palomar Health is the largest health care district by area. The district was formed in 1984, replacing the Escondido Valley Hospital Association which itself was formed in 1945. Each California health care district is governed by a locally elected board of directors. Candidates are elected to the board of directors for four-year terms. For example, an election for 3 out of the 7 directors took place during the November 2012 California elections.