Professional Summary


  • Baylor College of Medicine - Houston, in Doctor of Medicine, 2005


  • Baylor College of Medicine - Houston, in Internal Medicine, 2008


  • Fellowship in Hematology/Oncology from Mayo Clinic

Board Certifications

  • AM BD INTERNAL MEDICINE (HEMATOLOGY) awarded in 10/24/2012

Professional Memberships

  • American Society of Clinical Oncology
  • Alpha Omega Alpha


  • Hematology/Oncology

Language Spoken

  • English

Verified Patient Ratings

The Patient Rating score is an average of all patient responses to physician related questions in the Press Ganey Medical Practice survey. Patients receive a survey to complete within 1-2 days of their physician visit. Responses are measured on a scale of 1 to 5, with 5 being the best score.

Patient Satisfaction

(4.9) 369 ratings

Verified Patient Comments

Comments also are gathered from the medical practice survey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

Jan 13, 2023
Dr Lewis is so kind and caring. He really listens and engages me in my condition.
Jan 9, 2023
Dr. Lewis is an amazing doctor.
Jan 6, 2023
The very best!
Dec 22, 2022
Dr Lewis and team are excellent.
Dec 10, 2022
Dr. Lewis is fantastic! I never feel rushed. He communicates so well with my other physicians. He puts me at total ease. I would recommend him to anyone and everyone!
Oct 24, 2022
Dr. Lewis is a wonderful doctor.
Oct 17, 2022
Dr. Lewis is amazing & through
Oct 11, 2022
If all physicians were like Dr Lewis our healthcare systems would be perfect
Oct 11, 2022
Both Dr Lewis & his assistant always very helpful.
Oct 11, 2022
Dr Lewis answers all questions. He is very concerned about neuropathy related to chemo & asked that I especially look out for it.
Aug 29, 2022
Aug 19, 2022
Speaking with Dr. Lewis is always comforting.
Jun 26, 2022
The numbers don't go high enough. Dr. Lewis took a complex situation and made it simple to understand. His professionalism was fantastic, hIs compassion unparalleled.
Jun 24, 2022
Dr Lewis listened to our questions and clarified many things for us.
Jun 23, 2022
Dr Lewis is truly an amazing resource who has my total trust and confidence!
Jun 22, 2022
I left with answers I was concerned about for about 3 months.. It was very good experience
Jun 21, 2022
Great experience
Jun 12, 2022
Best doctor ever!!
Jun 1, 2022
Dr. Mark A. Lewis is excellent!!! He is very interested in and concerned for my health challenges and condition. He is ALWAYS prepared for each of my appointments with not only high awareness of my lab and/or imaging results but high-level interpretation and assessment, as well. His desire and dedication to pleasantly and humbly serve the patient - and not just provide a doctor download and dictate - permeates every minute of every interaction. He is a wonderful anomaly!
May 18, 2022
Great Doctor and staff. They really care!
May 10, 2022
Excellent experience!!!
Apr 27, 2022
Explanation was excellent. Was not rushed.
Apr 14, 2022
Dr. Lewis was AMAZING! He explained everything so well. He was very caring and his presence was very calming. I would recommend him to anyone who needed to see him.
Apr 11, 2022
Dr Lewis is amazing, he explained everything in detail that we could understand
Apr 11, 2022
Dr Lewis explains pictures of scans and points out organs and any concerns and compares former scans to shows improvement or problems.
Apr 11, 2022
Treat me like a special person.
Apr 6, 2022
Excellent physician
Mar 27, 2022
I am blessed to be able to have Dr. Lewis & his medical team.
Mar 27, 2022
I would happily recommend this staff to anyone needing care.
Mar 23, 2022
I would recommend Dr Lewis to anyone with cancer. He is a very kind man. Ten Stars. I owe him greatly!!!
Mar 23, 2022
Dr Lewis was amazing. He took an amazing amount of time to explain my situation. He is a very good doctor. Very kind. I felt fortunate to have the privilege of his time and expertise. Ten Stars
Mar 21, 2022
Excellent service
Mar 14, 2022
! I would hit a character limit in this comments section if I were to express all the positives of being under Dr Lewis' care.
Mar 3, 2022
Excellent doctor I highly recommend
Feb 28, 2022
Mark Lewis is an outstanding physician
Feb 11, 2022
Dr Lewis knew more about my cancer than any of my six previous oncologists.
Dec 28, 2021
Excellent care for 2 years.
Dec 28, 2021
Always friendly, caring, helpful.
Dec 24, 2021
The doctor has been excellent in every way during these past six months
Dec 10, 2021
Dr Lewis is the best!!!
Nov 24, 2021
Dr Lewis is well informed about my cancer and my experiences with it. I appreciate his insights
Nov 10, 2021
Dr Lewis is excellent in his ability to teach me about my cancer. He is compashnate and caring.
Nov 5, 2021
Very efficient and always helpful and concerned!!
Nov 5, 2021
Love dr Lewis and all of the staff!!
Nov 4, 2021
Nov 4, 2021
Oct 22, 2021
If It was possible to give a higher rating to Dr. Lewis and his assistant than a 10/10 I would. They are Incredible.
Oct 19, 2021
Always satisfying
Oct 19, 2021
Always satisfying
Oct 7, 2021
Best overall attention and concern I could have possibly expected. Dr Lewis went up and beyond to make me comfortable and educate me on my upcoming journey.
Oct 1, 2021
Great experience. I would want anyone I love to see Dr . Lewis
Oct 1, 2021
Could not have been better
Sep 28, 2021
If there was a rating higher than a 5 Dr Lewis deserves that. Maybe 100 on a scale of 1-5!
Sep 18, 2021
Love Dr. Lewis
Sep 17, 2021
Excellent physician highly recommend
Sep 7, 2021
Dr Lewis is very thorough In explaining the results of my test and what treatment we are going to continue.
Sep 4, 2021
Always good
Aug 30, 2021
Dr Lewis is one of the best providers I have had
Aug 22, 2021
Dr lewisHas always been upfront and knowledgeable on my medical issues and explains in detail,I am always comfortable with him and his staff.
Aug 5, 2021
I would recommend everyone to Dr. Lewis and his staff and office. They are amazing!!
Aug 4, 2021
Dr Lewis is an amazing caring, intelligent, knowledgeable doctor. A very kind doctor, listens extremely well and consequently his responses makes you feel like he understands and sympathizes when you express all that ails you. I am so lucky to have been
Jul 26, 2021
It seems Mark Lewis has all the time we need with our endless questions for him. Patient, kind, compassionate, thorough, and open, he has a way of making us/me feel I am heard and SEEN. He's a great model for physicians.
Jul 26, 2021
Jul 26, 2021
Jul 20, 2021
Dr Lewis is one of the best! His thoroughness and preparation before the appointment were remarkable! Such a kind man! We love him!
Jul 8, 2021
The best.
Jun 28, 2021
Very good doctor and nurses iand assistants.. they all are very professional and give great care and I would always recommend them
Jun 26, 2021
dr. Lewis is outstanding. he always listens,. Excellent doctor. of course good news helps!! ;)
Jun 26, 2021
dr Lewis is the BEST!
Jun 24, 2021
Dr. Lewis is the best! I alway have a positive experience with him and his staff.
Jun 10, 2021
have and will continue to recommend to friends and family.
Jun 10, 2021
Dr. Mark A. Lewis is the absolute most competent, prepared, and helpful physician I have ever had in my entire life!
Jun 10, 2021
Dr Mark Lewis is outstanding in all aspects.
May 16, 2021
I have recommended people to him. Best doctor in the state!
May 2, 2021
Dr Lewis is the most incredible Dr I've ever met in my entire life. He's caring, compassionate, intelligent, resourceful, and friendly!
Oct 29, 2017
Dr. Lewis was a fabulous provider, he gave me every piece of information that I could possibly hope for and then some. I would go to him and recommend him to anyone and everyone. It was a wonderful experience.
Oct 25, 2017
As with everyone else that I have met at Intermountain Medical Center, Dr. Lewis an an amazing professional. I would recommend him to anyone and I have complete faith in his knowledge and recommendations.
Oct 22, 2017
His office got us in, literally immediately. And,he was very attentive and answered all of our questions… and just seemed very caring,we appreciated the visit with him
Sep 20, 2017
He was excellent. Extremely knowledgeable.
Jul 27, 2017
Dr. Lewis was very knowledgeable about what experiences we were going through. He explained everything perfectly. He dummied it down for us, I guess you could say. He helped us understand our options and he helped us understand what was going to happen. H

Practice Location

Intermountain Medical Oncology - IMC

5171 S Cottonwood St Bldg 1 Ste 610 Murray, UT