Our Physicians

The physicians here at the University Colorectal Building are outstanding. Both men have remarkable backgrounds in their field, and are specialists when it comes to colon and rectal surgery. Click on the links below to read more about our physicians.

Dr. Mark Casillas                                         

Dr. Andrew Russ


Ready to set up an appointment? Visit the Contact Us page for directions and extra contact information.

Contact Us 

Quick Contact

Office Location:
1934 Alcoa Highway, Professional
Building D, Suite 370
Knoxville, TN 37920