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Michael R. Mills, M.D.
Gastroenterologist
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To schedule an appointment, please call 602-266-5678 or click the “Message Us” button located at the bottom right corner of your screen and a member of our team will contact you within 48 hours.
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
Hospital Affiliations
- Banner Estrella Medical Center
- Banner University Medical Center
Awards or Distinctions
- 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
- Top Doctor Phoenix Magazine 2025
Locations
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Dr. Michael R. Mills, M.D.
Reviews
Dr. Mills provides excellent care, even if things are complicated. He doesn't rush through the appointment.
Dr Mills and the entire team at ADH were absolutely fantastic. From booking my appt,
to my consult with Dr Mills and the actual procedures - everyone was extremely professional and also so nice and caring
They’re the best at what they do and I highly recommend this practice.
to my consult with Dr Mills and the actual procedures - everyone was extremely professional and also so nice and caring
They’re the best at what they do and I highly recommend this practice.
The office was very warm and welcoming with polite and friendly staff. There was not a long wait to see the Dr. The Dr was caring and was knowledgeable. He prescribed me something to begin relieving some of the discomfort in my stomach.
Dr Mills and his staff have been nothing short of great for me. I live 3 1/2 hrs away from the office, and love that I can do consultations via their doxy system. Thank you for your great care.
I had a great experience with Dr. Mills, GI specialist. He was professional, thorough, and truly took the time to listen to my full medical history. I felt heard and understood, which is rare these days. He asked thoughtful questions and explained everything clearly, making sure I was comfortable with the plan moving forward. He also ordered the appropriate tests right away, which gave me peace of mind. I highly recommend Dr. Mills to anyone looking for a knowledgeable and compassionate GI specialist.
Dr. Michael Mills is a exactly doctor who show that he really care. I love that about him.
Dr. Mills and his team provided exceptional care and expertise during my colonoscopy procedure. From start to finish, they did a fantastic job. I highly recommend Dr. Mills.
Very professional and thorough. Dr Mills explained everything before and after. Nurses were great and all went well
I had a very good experience the Doctors and staff were excellent 👌👍 highly recommend this clinic
Excellent Doctor and staff!!!
Highly recommended!
Highly recommended!
Dr. Mills is a knowledgeable, caring doctor who truly listens to you. I highly recommend him.
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.