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Dr. Mark Casillas, MD

Dr. Mark Casillas, MD

Colorectal Surgery*
15+ years of experience

Dr. Mark Casillas, MD is a colorectal surgeon in Knoxville, TN and has over 15 years of experience in the medical field. He graduated from University of Alabama at Birmingham in 2006. He is affiliated with University of Tennessee Medical Center. He is accepting new patients and telehealth appointments.

4.5 Star Rating
Based on 34 reviews 4.5 Star Rating (34 reviews)

Practice

1924 Alcoa Hwy Knoxville, TN 37920
Telehealth available

Make an Appointment

(865) 305-6740

At a Glance

  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Offers Telehealth
    This doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Hospital Satisfaction
    Patients said they were highly satisfied at this doctor's hospital. • See hospitals
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Dr. Casillas' Reviews

Likelihood to recommend Dr. Casillas

4.5
34 ratings, 7 with a written review
5 star
85%
85%
4 star
0%
0%
3 star
3%
3%
2 star
3%
3%
1 star
9%
9%

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Dr. Casillas is a very skilled, knowledgeable surgeon. He takes the time to thoroughly explain procedures and options. His calm demeanor is very reassuring. I was so impressed with him, and so grateful for the excellent outcome of the surgery.
What went well
  • Listened & answered questions
  • Explained conditions well
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • Office environment
Helpful
Mary H. – Jun 28, 2021
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Dr. Casillias goes above and beyond for his patients. He's so knowledgeable and understanding. His staff is the best. I just love this office
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Jenn Goodin – Apr 20, 2021
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My last visit was my last visit. Dr Casias,in my experience, choses not to communicate with other surgeons on my case. He blindly performed a procedure without imaging or the experience of someone more qualified and as a result. My life has been impacted in a very difficult way ever since. I regret that I trusted him. He did exactly the opposite of what he told me he would do. Problem is ,he knows it and refuses to take personal responsibility and simply say,I'm sorry this happened.
What went well
No results
What could be improved
  • Office environment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Didn't trust the provider's decisions
2 others found this helpful
Helpful
T.A.H. – Mar 09, 2021
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Fantastic doctor, Explains everything in detail and asks is you have questions and he listens to you.
What went well
No results
What could be improved
No results
1 other person found this helpful
Helpful
Mar 29, 2019
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Dr. Casillas took over practice of Dr. Julio Solla whom I used for 15 years. Dr. Casillas is incredibly thorough, very "patient sensitive" and is another one of the exceptional bright Stars at UT Medical. It takes a very special physican to practice in the Colon / Rectal arena, he's tops. Had a recent colonoscopy, he was very thorough with diagnosis to find diverticulitis, discussed treatment options, etc. Engages and listens to patient very well. Highly recommend.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Robert in Knoxville, TN – Mar 08, 2019
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Dr. Camilla’s is an expert in his field of medicine. He is through in his exam, explanations. He has a great bedside manner. My surgery had a very good outcome. I’m glad he was my doctor.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
2 others found this helpful
Helpful
Adrienne in Maryville, TN – Apr 11, 2018
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This doctor is very professional and caring. Did my surgery 6 days ago and so far it looks like he did a great job. Very recommend him to others. ??????
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
2 others found this helpful
Helpful
Katusha in Sevierville – Apr 10, 2018
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Know Before You Go

About Me

care philosophy

UTcolorectal.org We provide the full spectrum of colorectal surgical care but our services extend beyond the operating room. We pledge to treat you with dignity and respect, to communicate with you clearly and honestly, to protect your confidentiality, and to earn your trust.

  • Colorectal Surgery

  • General Surgery

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Indiana School Of Medicine-colon & Rectal Surgery Residency

    Fellowship Hospital, 2012

  • St. Joseph Mercy Hospital-general Surgery Residency

    Residency Hospital, 2011

  • Brown University

    Internship Hospital, 2007

  • Brown University Alpert Medical School

    Internship Hospital, 2007

  • University Of Alabama At Birmingham

    Medical School, 2006

  • University Of Alabama At Birmingham Heersink School Of Medicine

    Medical School, 2006

  • University Of Alabama

    Undergraduate School, 2000
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

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Locations

Practice

University of Tennessee Medical Center1924 Alcoa Hwy Knoxville, TN 37920
1
Office1934 Alcoa Hwy Bldg D Knoxville, TN 37920
2

Affiliated Hospitals

  • University of Tennessee Medical Center

    1924 Alcoa Hwy
    Knoxville, TN 37920
    Recipient of 4
    hospital awards

    How patients felt about the care they received at this hospital.

    86%
    Patients said they were given information about recovering at home

    2% higher than the national average

    80%
    Patients said that doctors always listened to them and explained things well

    4% higher than the national average

    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality