With a location in pleasant hill. Calif. . Nightingale of Contra Costa was established in 1987 and is one of the premier providers of home health care services in alameda and contra costa counties in the SAN francisco BAY Area's east BAY region. Its service areas include the cities and communities of alameda. Berkeley. Castro valley. Concord. Emeryville. Fremont. Hayward. Martinez. Oakland. Piedmont. ROSSMOOR. SAN Leandro. SAN Lorenzo and walnut creek in california. Nightingale of Contra Costa offers a comprehensive range of services that includes private duty custodial care. Licensed home health and assisted living in woodside nightingale senior residence. AS well AS supports STATE-APPROVED certification training and continuing education programs.