According to our records, this business is located at 1114 Milton Rd. in Alton (in Madison County), Illinois 62002, the location GPS coordinates are: 38.8941644 (latitude), -90.1328025 (longitude). C N Koch DDS is categorized under Dentists (SIC code 8021). Known organization owner is Cyril Koch. You can contact the company by phone at (618) 462-8611.