Located in San Andreas, Mark Twain Medical Center is a nonprofit, 25-bed Critical Access Hospital serving Calaveras County and the surrounding rural communities. Founded in 1951, the hospital provides emergency, inpatient and outpatient care, along with a broad range of specialty and diagnostic services. As a member of Dignity Health and CommonSpirit Health, Mark Twain Medical Center is committed to providing compassionate, high-quality healthcare while supporting the health and well-being of the community it serves.