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Michael R. Mills, M.D.
Gastroenterologist
About Michael R. Mills, M.D.
Education
- Gastroenterology Fellowship: University of Arizona Health Sciences Center, Carl T. Hayden VA Medical Center, Banner Good Samaritan Regional Medical Center
- Internal Medicine Residency: University of Colorado School of Medicine
- M.P.H. Tulane University School of Public Health & Tropical Medicine (New Orleans, LA)
- Medical Degree: Tulane University School of Medicine (New Orleans, LA)
- Undergraduate Degree: B.S. University of Arizona (Tucson, AZ)
Additional Languages
- Spanish
Board Certification
- American Board of Internal Medicine – Gastroenterology & Hepatology
Associations/ Memberships
- American College of Gastroenterology
- American Gastroenterological Association
- American Medical Association
- American Society of Gastrointestinal Endoscopy
- Arizona Medical Association
- Maricopa County Medical Society
- New Life Society, Board Member
- Phoenix Society for Gastroenterology
- Crohn’s and Colitis Foundation
Awards or Distinctions
- Top Doctor Phoenix Magazine 2025
- 2023 Crohn’s & Colitis Foundation Champion of Mission Honoree
- Recognized in America’s Top Physicians
- Fellow, American Society for Gastrointestinal Endoscopy (FASGE)
- Fellow, American College of Gastroenterology (FACG)
- Clinical Assistant Professor of Medicine, University of Arizona
- President-Elect (2012), Maricopa County Medical Society
- President, Board of Trustees, Arizona Foundation for Medical Care
- Volunteer St. Vincent de Paul Medical Clinic
Hospital Affiliations
- Banner Estrella Medical Center
- Banner University Medical Center
Locations
Reviews
I had my 2nd colonoscopy from Dr Mills in August. 5 Stars doesn’t seem enough. Great staff, cleanest facility you will ever see. And, Dr Mills explains everything before and after.
Dr Mills is an excellent physician and very caring . I known him for over 20 years he has done all my procedures from endoscopy to colonoscopy during this time . The staff are great and friendly.
I appreciate that Dr Mills listens to not only how I am feeling, but my perspective from what I have learned over the years for my body. I feel like he is a partner in helping me heal!
Very helpful staff that supported me thru the entire process, Dr Mills’ experience made for a thorough and painless procedure.
Excellent communication both prior and following the procedures. Thorough explanation of the process and the findings and addressed follow-up plans. Takes the time to be thorough. The office staff is also knowledgeable and makes sure that waiting time is minimal
Excellent experience with Dr Mills. He explained everything very well and answered all our questions. He’s very kind and open.
My experience having a colonoscopy went well. Dr. Mills has been my Dr. for several years. He is always kind, professional, spends time with me before and after the colonoscopy. He explains things, asks me if I have any questions or concerns. The prep day is the challenge, having the colonoscopy is easy. I recommend Phoenix Endoscopy and Dr. Mills will be a Dr you will feel comfortable with.
Excellent communication both prior and following the procedures. Thorough explanation of the process and the findings and addressed follow-up plans. Takes the time to be thorough. The office staff is also knowledgeable and makes sure that waiting time is minimal
Superb experience. Doctor Mills went above and beyond to help a chronic condition.
Dr. Mills and his staff are fantastic. Every member of the team I saw was warm, professional, and compassionate. I would highly recommend this practice if you're in the market for a GI doctor!
What an amazing Dr. I've never been treated so patiently and caring in my life by any other physician as I have by Dr. Mills.
I see Dr. Mills for Crohns disease. He is the 8th doctor I've consulted for this condition. Dr. Mills has been the most insightful and the most compassionate physician I've consulted to date. His extensive background treating this condition jumps out from his conversation. He is quick to sort through a number of interrelated digestive system issues and get to a thoughtful conclusion. Most notable to me was that he was focused not only on the treatment but the time it will take to achieve relief - a refreshing change from the norm.
This was a follow up appointment with Dr. Mills on Zoom. He was receptive to my issues and gave me feedback.
Dr Mills always listens and the office staff is great at communicating
I find that talking to Dr. Mills very easy and informative. He gave me the confidence to go ahead with the procedures and I know it’s the right thing to do. As a doctor he is a great asset to the Phoenix area.
Dr Mills has been my Doctor for around 24 years and he is absolutely amazing. I owe my life to him.
The best GI doctor anywhere!
The best GI doctor anywhere!
I can’t say enough amazing things about Dr. Mills and the entire office. His bedside manner is outstanding: He is the most caring, understanding and compassionate man. He’s very thorough and makes sure every base is covered.. I have received so much support from the office in helping me with paperwork and medication applications ….you name it and they are there to help. I am so blessed that I was referred here .
Dr. Mills is amazing. He truly cares about his patients. Appreciate all the hard work he puts into his practice.
Dr. Mills is a competent, caring dr. The office staff are friendly, knowledgeable and go out of their way to make you feel welcome and informed. I highly recommend Dr. Mills!!
I've seen Dr. Mills for GI-related checks for over 20 years now. He and his staff are unfailingly professional, courteous, and helpful. I particularly appreciated the calls from his office before my procedures, reviewing the preparation steps.