Mark A. Casillas, FASCRS, FACS, MD

Associate Professor, Colon and Rectal Surgeon

4.9/5 (173 ratings) 20 comments

casillas_mark_a_jr_md-600x676.jpg

About Me

Gender: Male

Languages Spoken:
English

View Insurance Accepted

https://youtu.be/pyDcBffzwSM

Specialties:
Colon and Rectal Surgery

Education & Credentials

Medical School

University of Alabama School of Medicine

Internships

Brown University School of Medicine

Residencies

Saint Joseph Mercy Hospital

Fellowships

Indiana University School of Medicine

Board Certifications

American Board of Surgery, Board Certified in Colon & Rectal Surgery

Where I See Patients

University Colon & Rectal Surgery

1934 Alcoa HighwayMedical Building D, Suite 370Knoxville, TN 37920

Phone: 865-305-5335

Fax: 865-305-8840

Directions
University Colon & Rectal Surgery

Visiting our main campus? Use the UTMC Way app to get around.

My Ratings & Reviews

overall experience

173 ratings

4.9
  • Likelihood of recommending this provider

    4.9

  • Provider explained things clearly

    4.9

  • Provider showed concern

    4.9

  • Provider included you in decisions

    4.9

20 Patient Reviews

Good
5.0
April 25, 2024
I have great faith in my Doctor. He always gives it to me straight but with care. He listens to me and laughs when I make jokes. I feel like he takes his time to form a connection with you so you don't feel like just a number but a human being.
5.0
March 29, 2024
I felt I was receiving SKILLED AND COMPETANT CARE.
5.0
March 21, 2024
He is a really good doctor
5.0
March 10, 2024
Very patient in explaining everything and asking if we had questions. Very direct.
5.0
March 6, 2024
Dr. Casillas was great! Very informative regarding my appointment. I would highly recommend him
5.0
March 2, 2024
Perfect
5.0
January 22, 2024
He is very thorough
5.0
January 17, 2024
I will definitely recommend Dr Casillas
5.0
December 21, 2023
Good
5.0
November 30, 2023
Dr Casillis did all the talking and answered all my questions. He was phenomenal!
5.0
November 1, 2023
Dr. Casillas went above & beyond to listen & take care of my needs.
5.0
October 31, 2023
So impressed with the amount of time Dr. Casillas spent explaining my problem and what could or could not be done to resolve the situation.
5.0
October 13, 2023
Probably on of the best physicians I have seen for anything.
5.0
September 22, 2023
Good
5.0
September 10, 2023
He listens to my concerns, and have good experiences so far.
5.0
September 8, 2023
Dr. Was very informative and really seemed to care!
5.0
September 5, 2023
Provider has developed good rapport w/me. His bedside manner is excellent. Difficult job for dr. He handles work with utmost professionalism.
5.0
September 5, 2023
Excellent doctor.
5.0
August 18, 2023
Great
5.0
July 19, 2023