SOURCE: Centers for Medicare and Medicaid Services (CMS) Nursing Home Compare files (July 2015).
NOTES: High-quality nursing homes are those with an overall CMS rating of four or five; medium-quality have a CMS rating of three; and low-quality have a rating of one or two. Central Coast: Monterey, San Benito, San Luis Obispo, Santa Barbara, Santa Cruz, and Ventura. Greater Bay Area: Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano, and Sonoma. Inland Empire: Riverside and San Bernardino. Northern and Sierra: Amador, Butte, Calaveras, Colusa, Del Norte, Glenn, Humboldt, Inyo, Lake, Lassen, Mariposa, Mendocino, Modoc, Nevada, Plumas, Shasta, Sierra, Siskiyou, Sutter, Tehama, Trinity, Tuolumne, and Yuba. Sacramento area: El Dorado, Placer, Sacramento, and Yolo. San Joaquin Valley: Fresno, Kern, Kings, Madera, Merced, San Joaquin, Stanislaus, and Tulare.