New Search 753 Mark A. Casillas MD (865) 305-5335 Primary Specialties Colon & Rectal Surgery (Board Certified) Languages Spoken: English Primary Office Address: University Colon and Rectal Surgery 1934 Alcoa Highway Suite 370 Knoxville, TN 37920 Phone: (865) 305-5335 Fax: (865) 305-8840 Web Page: www.utcolorectal.org Recommend this Physician Get Directions Education Medical School: University of Alabama Internship: Brown University Residency: St. Joseph Mercy Hospital Fellowship: Indiana University School of Medicine Certifications AB Surgery - Surgery AB Colon & Rectal Surgery - Colon & Rectal Surgery