Hospital Search Mark Twain St. Joseph's Hospital 768 Mountain Ranch Rd San Andreas, CA 95249 (209) 754-3521 Enter your starting address to get Driving Directions to Mark Twain St. Joseph\'s Hospital. Indicates a required field Street Address: City: State: AB AK AL AR AZ BC CA CO CT DC DE FL GA IA ID IL IN KS KY LA MA MB MD ME MI MO MN MS MT NB NC ND NE NF NH NJ NM NS NV NY OH OK ON OR PA PE PQ RI SC SD SK TN TX UT VA VT WA WI WV ZIP: Disclaimer