Areas Served
Counties served by the Diagnostic Center, Northern California.
The three California Diagnostic Centers serve the 58 counties of California by region
(North, Central, South). The Diagnostic Center, Northern (DCN) is located in Fremont, California and serves the following counties:
- Del Norte, Siskiyou, Modoc, Humboldt, Trinity, Shasta, Lassen, Tehama, Plumas, Butte, Glenn, Mendocino, Lake, Colusa, Yuba, Nevada, Sierra, Sonoma, Sutter, Placer, El Dorado, Alpine, Sacramento, Yolo, Napa, Marin, Solano, San Francisco, Contra Costa, Alameda, San Mateo, Santa Cruz, Santa Clara, San Benito, Monterey