Care Center Search Mark Twain St. Joseph’s Copperopolis Family Medical Center Lake Tullock Plaza 3505 Spangler Lane, Suite 400 Copperopolis, CA 95228 (209) 785-7000 Enter your starting address to get Driving Directions to Mark Twain St. Joseph’s Copperopolis Family Medical Center. 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