New Search 310633 Mark A. Casillas, Jr. MD Practice Started: 08/07/2012 Location Information University Colon and Rectal Surgery 1934 Alcoa Highway, Suite 370 Knoxville, TN 379201524 865-305-5335 Fax:865-305-8840 Get Directions Certifications AB Surgery - Surgery Areas of Interest Surgery, Colon & Rectal