Palomar Health Medical Group is an organization formed by the alignment of two of North San Diego County’s largest healthcare providers, Graybill Medical Group and Arch Health Medical Group. Palomar Health Medical Group is closely aligned our hospital partner, Palomar Health. Palomar Health Medical Group comprises a network of 20 locations throughout north San Diego County, Murrieta, and Temecula; 170 primary and specialty physicians; and 600 support staff; and will serve more than 150,000 patients.