Patient Reviews
GI Alliance physicians are among the most reputable and distinguished gastroenterologists across the nation. Focused on clinical excellence and patient-centered care, our specialists seek to be the partner you need in your quest for better health. We value patient feedback and appreciate every review we receive from those we are privileged to treat. For your convenience, we have gathered a collection of reviews, stories, and testimonials provided by patients who have visited our practices. We welcome you to explore the feedback below to learn more about what it means to be a patient of GI Alliance.
"Dr Mills is a wonderful Dr."
"Excellent from start to finish."
"Dr Mills reviewed my health files & discussed the proper procedure & the prep to insure my health. Arizona Digestive Health & their Staff, built a Team of players that know how to execute their position. From the time of registration to the discharge, the entire staff seemed to be in a happy place. Which improves everyone's feelings. I give ADH ******"
"Excellent, excellent doctor! Dr. Mills rocks! He is patient, kind, explains everything with both knowledge and care. By far, one of the best GI docs around. I feel very lucky to have come across his radar! The staff in the office and outpatient area also kind, compassionate and caring."
"Always very professional and caring."
"Dr Mills is a very esoteric doctor. He explains things well, and encourages a patient’s input in their treatment"
"Dr. Mills and his staff do an excellent job!!"
"The best! Everyone there treats you with kindness and respect."
"Amazing doctor, very detailed and cares a lot about his patients and helping as much as possible. Highly recommend his help and expertise!"
"Great staff. Congenial, efficient, caring, and covers all the bases. Dr. Mills began this practice 22 years ago. Undoubtedly his expertise and leadership make this one of the best if not the best patient experiences of my life. Thank you all."
"I’m a new patient and it was a positive experience. Dr Mills was responsive to my needs and suggested medications that could be helpful. It’s working."
"Everything was great Dr Mills is the best He always takes time to listen to me."
"Dr. Mills is very thorough and personable. He did not make me feel rushed and listened to all of my concerns."
"Dr. Mills is like the small town physician who knows you well and takes his time to listen and diagnose carefully."
"Amazing doctor!! I feel very comfortable when seeing him. Highly suggest not putting off your Colonoscopy his ofc makes it quick and painless, it’s the drink that is nasty! I recommend him and his practice to all my family & friends."
"The facility is very well organized and run by competent, efficient and professional staff."
"Dr. Mills is the best in Phoenix"
"I was very pleased by my initial appointment with Dr. Mills. He was thoughtful and asked in-depth meaningful questions about my situation. Dr. Mills is also an extremely good listener and allows for valuable physician-patient communication. I could not be more appreciative of his time and approach. Many thanks, Ralph"
"I think Dr. Mills is an outstanding physician. He is knowledgeable and compassionate."
"High quality. Staff extremely proficient and welcoming.five stars"
"Amazing doctor!! I feel very comfortable when seeing him. Highly suggest not putting off your Colonoscopy his ofc makes it quick and painless, it’s the drink that is nasty! I recommend him and his practice to all my family & friends."
"Dr Mill is great. I have been his patient for years."
"Prep for a colonoscopy is never fun, but the procedure process was first class!! Everything was explained beforehand. The nurse anesthetist gave me the perfect amount of propofol and I woke up feeling fine. This is my 2nd colonoscopy with Dr Mills and he is quick and thorough. I highly recommend Dr Mills and his professional staff! Darwin N Davis DDS"
"I received great care and when I needed followup care Dr. Mills kept in touch with Mr frequently. I knew I was in good hands."
"Dr Mills knew exactly what my symptoms meant and how to diagnose my treatment going forward. The pain and other symptoms I had before meeting with Dr Mills have completely dissipated due to his guidance. Dr Mills appeared to be well informed on all of my questions. Thanks so much!"
"Really liked his hospitality, took time to explain procedure"
"Amazing doc. Amazing bed side manner"
"Wow! Dr Mills is an amazing doctor. I've been going in circles since 2015! Today was my 1st appointment with Dr Mills. He is very knowledgeable, personable, patient, has a game plan and willing to help get a quality of life back. I was relieved to be fortunate enough to have an appointment with him! Highly recommend this Dr!"
"Dr Mills takes the time to explain everything. He ordered tests that found my problem. He’s the best!"
"Everyone has been great professional and kind my experience was very positive the staff and dr mills were a joy to work with"
"Friendly, Professional &Quality Service"
"Best doctor’s office experience. Very little wait time. Staff is very knowledgeable, friendly and patient. Dr Mills is also very nice, with a good sense of humor and makes one feel at ease. I would highly recommend them."
"Won’t go to anyone but Dr. Mills and their support staff there is outstanding."
"As a new patient, I was able to get an appointment within 2 days. Friendly, helpful staff. Dr Mills listened and gave me an action plan on what he’s going to do to try and help with the GI symptoms I have had for a few years."
"In my opinion the best gastro MD in AZ. You are in safe hands with Dr. Mills"
"Dr Mills and his staff are are professional, experts, using empathetic kindness making the entire experience good. Thanks Dr. Mills and staff."
"Check in was very easy; receptionist was very friendly! Completed my registration with help if needed."
"Very impressed after initial (virtual) visit with Dr. Mills!"
"Excellent visit! Dr. Mills was professional and very personable. First visit with him and I would highly recommend him."
"Just had my first visit with Dr Mills and just wow- I feel genuinely listened to for the first time by a doctor. He was very kind and thorough and I’m looking forward to continue working with him."
"The staff was very caring. Dr. Mills came in prior to the procedure to explain everything as well as reassuring me about the procedure once I went into the procedure room. I felt that I was there main concern through out my whole visit. I would highly recommend Dr. Mills and his associates for all of your gi issues. Everyone is very professional here."
"Dr. MILLS IS VERY PERSONABLE AND EASY TO TALK TO. HE REVIEWED THE RECORDS AND MADE SURE I WAS DOING WELL."
"Excellent, well-organized medical practice. Friendly, answer questions, highly recommended"
"I highly recommend Dr Mills because he listens and becomes a partner in resolving the health issue versus a dictator."
"Michael Mills has been an excellent doctor. He has dealt with our concerns in a professional, caring manner."
"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."
"Great Dr. Highly recommended!!"
"Dr. Mills is very caring and listens to all of your concerns. He takes his time during appointments and talks through everything with you to make sure he has gathered all of the information needed and that you are aware/understand the next steps moving forward. I would definitely recommend him if you are looking for a GI specialist."
"Best GI doctor in the Southwest. He listens instead of waiting for his opportunity to speak."
"Had a very good experience and loved meeting folks from the different campuses."
"I have been a patient of Dr. Mills now for about 3 years. He, as well his office staff, are to be highly commended. As a physician, he is extremely thorough, he genuinely listens to your problems and is an extremely competent diagnostician. (I am a nurse so can be very picky). His office staff is incredible and consistent with follow-ups, explanations, and being available whenever needed. I cannot recommend Dr. Mills and this practice any more highly."
"Great doctor. Great facility. Great nurses."
"Once again my experience was better than I could have anticipated. The staff is extremely professional and friendly as well. Dr Mills insures the process is as pleasant as possible by his calming assurance and thorough explanation of the procedure before and after."
"Quick check in, Amazing professionalism and efficiency!"
"Excellent as usual."
"Screening was quick no discomfort, Dr. Mills and staff did an awesome job. Do recommend to pay a visit to get a colonoscopy check."
"I have had many medical procedures, and this has been my best experience. Normally I don’t feel well afterwards with the anesthesia and all but everything was great. Dr. Mills and his team rocks."
"Dr Mills and staff are awesome! Thank you Dr. Mills for your time, patience and expertise!"
"Spoke with Dr Mills this past week via Telehealth. He had done an esophageal procedure for me a year ago. He was very kind and even checked on my condition while I was gone and across the country. He has now encouraged me again to follow through with his recommendation moving forward. He was patient even though a few other issues have come along in my physical life once again, and I had therefore decided I could not try to tackle anything anymore. He did not make me feel bad or guilty, I was apprehensive, as I never ignore a Dr’s orders. Dr Mills is a very calm & comfortable person to speak with, ask questions of, and I was 100% pleased that before, during & after my initial procedure he was right there with me, making sure that I was alright especially post procedure. Unfortunately there simply are not many Dr’s who make the time to give to their patients. Thank you, Dr Mills."
"gave us update information"
"I was very nervous for my first colonoscopy, but I had a great experience. The entire staff was great! I called a couple of times to ask different questions before I had the procedure done and my questions were always answered quickly. All went smoothly. I am so glad I chose to have it done with this office."
"Dr. Mills is absolutely amazing!"
"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!"
"Dr. Mills and his staff are respectful, thorough, and attentive to detail. They don’t stack their appointments so thick causing long patient wait times. My wait time was fairly short."
"An excellent option for colonoscopy or endoscopy: attentive, friendly medical staff in a well-established and convenient Midtown location. Dr. Michael R. Mills was very patient and thorough in explaining the procedure and results. About 2 hr after checking in, I was holding the colonoscopy report in my hand and grabbing an Uber ride home."
"Couldn’t be more pleased with process and staff!"
"The anethesia, really hurt going in. Nausea every morning since. But in the procedure area I can swallow a little better. And that was the gold. Luv Dr. Mills, but the anesthesia painful."
"Dr. Mills and everyone at Phoenix Endoscooy were wonderful. The entire procedure went smoothly and completed in a timely manner."
"My endoscopy experience with Dr. Mills and staff was smooth and professional. I was able to get an appointment quickly due to a cancellation. The staff were friendly and made me feel at ease until I left. I am not experiencing any side effects from procedure. Highly recommend! Also, shoutout to PA Kaitlin who has been helping me prior to endoscopy."
"The office visit with the doctor was excellent. He spent time listening to my concerns. His response to my health issues was good and the recommendations."
"Dr. Mills is an excellent physician! The facility is very clean, the nurses and staff are kind and professional. I had a very good experience."
"My endoscopy experience with Dr. Mills and staff was smooth and professional. I was able to get an appointment quickly due to a cancellation. The staff were friendly and made me feel at ease until I left. I am not experiencing any side effects from procedure. Highly recommend! Also, shoutout to PA Kaitlin who has been helping me prior to endoscopy."
"Dr. Mills is always very friendly, thorough, and puts the patients needs and concerns first."
"Excellent Dr and staff. Highly recommend"
"Love, Love, Love Dr. Mills! Besides his years and years of expertise, his bedside manner is outstanding as well. Top notch GI doc!"
"Appt was right on time. Staff were courteous and helpful. The doctor was friendly, seemed to be exceedingly competent. I’m very glad I chose Dr Michael Mills"
"Dr. Mills was very thorough. He took his time reviewing my records and fully explained the steps and exams that were needed to take back control of my health."
"Excellent dr. with incredible care for his patients."
"Incredibly organized and professional."
"Dr Mills was great and so was his staff. I would definitely recommend."
"Dr. Michael Mills is a great doctor who cares about his patients and takes time to listen 👍"
"Let's think Dr Mills is a really good doctor he let you know exactly what's going on."
"Pleasant environment and compassionate employees"
"Great customer service!"
"I’ve been going to Dr Mills for many years and he is extremely knowledgeable, compassionate and thorough. He spends as much time with his patients as needed. Not a clock watcher! Couldn’t ask for better care."
"Great customer service!"
"Dr. Mills is the most caring doctor! He actually listens to what I say and he empowers me to lead my best life with my disease."
"Office was very friendly and helpful. Ensured all steps taken to meet the doctor were in place. Dr Mills was a pleasure meeting, who provided thoughtful and insightful information which helped ease any uncertainty, and made me feel very comfortable throughout our visit. Very happy to have found him and his office."
"Very professional and friendly!"
"The most caring doctor-and human- I’ve encountered in a long time. He spends whatever time is needed to evaluate your issue and answer questions. He is bright, practical, and and intuitive. Love this guy!"
"Dr. Mills cares for you and your medical needs. Recommended."
"Dr Mills has been my gastroenterologist for over 20 years! He is not just an awesome physician, he is a stellar human. He gives me such confidence that I can get through flares, etc (colitis and more). You’d need to look far and wide to find a better health care provider. I’m soooo grateful!"
"Dr. Mills is extremely thorough, kind and knowledgeable. I fully trust him as he’s so amazing at figuring out puzzling cases and finding innovative ways to treat them. He treats his patients like he would his precious family members."
"Dr. Mills is awesome. Very professional, friendly and always takes the time to answer all your questions."
"Hands down🤝 the BEST Physician that I have come across since I move to the Valley from Maryland a year ago. Dr. Michael Mills bedside manners was calming and patience. He listened to your concerns without you feeling rushed and suggested different ways to treat your condition without you leaving his practice searching for clarity which I have experienced several times. His front desk staff and medical assistant was also awesome …. I will definitely recommend Dr Mills for ALL your gastrointestinal needs because he Definitely has a spirit of Excellence when serving his patients.🙌🏽"
"I would recommend Dr Mills to all my friends. He is a very thorough doctor. Listens to his patients concerns."
"Everyone was friendly and Dr. Mills was a pleasure to work with. He explained everything clearly."
"Dr. Mills is a very caring, concerned doctor. He takes the time to listen and give you good feedback. He also understands Mast Cell issues."
"I recently had a gastroenterology appointment with Dr. Mills and I couldn't be happier with the care I received. He is a highly skilled and experienced doctor who took the time to listen to my symptoms and concerns. He provided me with a clear and detailed explanation of my condition and treatment options. Dr. Mills also followed up with me after the appointment to ensure that my symptoms were improving. The staff at his office were also very friendly and professional. I highly recommend Dr. Mills to anyone in need of a gastroenterologist"
"Excellent experience, strongly recommended."
"Love Dr. Mills! Great bedside manner, professional knowledgeable and reassuring."
"Dr Mills has been my Dr for many years. He is one of the best Drs out there. He never gives up trying to find a solution for my pain. He really does care."
"Dr Mills has been my Doctor over many years. He is a great doctor. He is thorough, and listens to me and is very compassionate. Has called me at home to check on me over the years when I haven’t been well! Thank you Dr Mills, I am grateful for your care"
"He is an excellent doctor. I've been a patient of his for over 10 years."
"Dr. Mills chose his profession perfectly. He truly cares about you as a patient. The greatest gift we can give someone is the gift of time. Dr. Mills gave me all the time that I needed to explain my pain and what brought me in. I wasn’t rushed, he was in engaging and really listened to me. I feel confident under his care."
"Excellent staff very friendly and attentive thanks for everything."
"Dr.Mills was kind and understanding we try to navigate this journey of scleroderma."
"Dr Mills is thorough and explains things in a manner that is very understandable. He has a calm demeanor and is very warm and friendly. Staff is also very caring."
"Excellent communication skill, listening to my needs, explaining what procedures would be needed and his experience in such. Very personable. I came away feeling quite confident and at ease that I would be well taken care of"
"Dr mills is amazing! Highly recommend him to anyone! Professional, very knowledgeable, spends time answering all questions, patient and kind."
"Dr Mills is very careful to explain the entire process of the colonoscopy from the prep medications thru the actual procedure helping the patient be comfortable with the process."
"Dr. Mills and his staff provided me with the highest level of care and compassion. Absolute professionals and I’d highly recommend them to anyone and everyone. Dr. Mills has a wonderful bedside manner and is very kind. He explains things in a way that make you feel comfortable, doesn’t talk down to you, and doesn’t make you feel like he’s rushed or that you are an inconvenience. He amazing."
"Dr Mills is knowledgeable, conscientious, and empathetic."
"i can’t say enough about Dr Mills and the staff at Arizona Digestive Heath. their attention to detail and sanitizing was clearly a priority. it was such a smooth procedure. they are professional and compassionate. You don’t find that in todays society. They even called the day after to check on me. Amazing!! I highly recommend them."
"It was great meeting w/ Dr Mills. He was very professional and personable. I feel like I made a good choice when choosing Dr Mills."
"Saw Dr Mills for the first time. He had my complete medical history at hand. He saw me on time and was very personable & did not rush. I recommend him highly."
"Dr Mills has been my gastroenterologist for over 20 years! He is not just an awesome physician, he is a stellar human. He gives me such confidence that I can get through flares, etc (colitis and more). You’d need to look far and wide to find a better health care provider. I’m soooo grateful!"
"Best listener and easy to communicate with through portal with answers to any questions. Highly recommend!"
"Excellent Dr."
"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."
"He listened to me thoroughly and we are doing the correct tests to determine what is wrong and that's a lot more than I can say about a lot of other doctors I've seen so thank you. He listens and he seems to really want to help."
"Dr.Mills is one of the best doctors In AZ. Professional staff, incredible Facility and I cannot explain his kindness and consideration to his Patients. One of a kind !"
"Dr Mills is awesome. I love that he is so patient and does not rush you through your visit."
"I have been a patient of Dr. Mills for over 10 years. Recently, I brought my father in to see him, as well. He was very patient with my Dad and took the time to listen to him and answer all of his questions. After an endoscopy, my Dad had further questions and he took time out to answer those, as well. There are not very many doctors these days who are willing to go the extra mile. Dr. Mills is one of the few."
"Really enjoyed meeting Dr Mills! Not your average physician. You can just tell that he likes his work and enjoys his patients. He is smart, funny and made me feel well taken care of. I really like him."
"Great telehealth visit"
"I have been a patient of Dr. Mills for a long time. I can’t recommend him more highly. He is personable, highly skilled, gentle, and a very good communicator. His office staff is efficient, professional and follows up on everything! I’m highly satisfied with Dr. Mills!"
"Very understanding and patient. Listened to all my questions and addressed my concerns."
"Dr. Mills is an outstanding physician. I have been his patient for over 10 years. He cares about his patients and he has great diagnostic skill. He and his staff are extremely professional. Highly recommend!"
"One of the best doctors who has ever treated me."
"I have known Dr Mills for over a decade, he is an excellent listener and strives to do what is bedt for his patients"
"I've been a patient of Dr. Mills for years. He's always honest with me. He responds quickly and listens. His office staff is very friendly and responsive. I'd recommend him to anyone who needs care."
"When he is consulting with me, I am like the only person in the world at that time. He is very confident, positive and knowledgeable. He will not rush a patient out or leave any questions unanswered. My wife switched to his care as well and we are both 100% confident in him, his team and his treatment. We would very highly recommend him, his team and Arizona Digestive Health to anybody needing any G.I. analysis or treatment."
"Excellent Doctor. He cares, he's a professional. He is what a doctor should be in everyday. I'm very satisfied with my visits to his office."
"Dr. Mills was truly concerned with my well being. He spent an abundance of time going over my history and concerns. Knowing that my insurance was about to expire, he got me scheduled for a needed procedure the very next day. Not only was he wonderful, the entire staff was friendly and caring. I highly recommend Dr. Mills."
"Dr Mills is beyond excellent He is knowledgeable kind and listens. I highly recommend him"
"Very courteous customer service. I was greated right away when I came in the office for my appointment. I was given very clear directions by the receptionist, and I didn't wait very long to be seen by the doctor. Dr. Mills came in and provided a clear assessment and plan of care. I was also given clear information on what I needed to do to prepare for my next procedure. Thank you for the outstanding customer service."
"Dr. Mills is very attentive and sincere. He made me feel like I was his only pTient and I have complete confidence in him"
"Dr Mills is a very experienced and very knowledgeable MD I would recommend Dr Mills for any procedure that you would need his help with"
"I'm very happy with Doctor Mills. He is very knowledgeable and very patient about explaining everything."
"Excellent in all aspects."
"Very caring office staff & Dr Mills. They are helping me improve my health issues."
"I feel Dr Mills is concerned about my health. I’m very relaxed when I’m explaining things to him and most of all he listens. He’s a very good provider. I’m so glad I found him."
"I feel safe & so special with Dr Mills & very fortunate I found him.(on a TV special) His Facility is State of the Art. You can actually watch your procedure on screens all above the wall and feel "No Pain". It's an amazing experience to visit Dr Mills & his hospital /facility. All of his staff are as gracious, kind considerate & as he. Dr Mills is an "Expert" on what he has done for my problems. I've been to a few other surgeons that did not handle my situation as well.... I've been going to Dr Mills for over 18 yrs. He has kept me healthy ...Thank you Dr Mills. I'm grateful for you."
"From the moment Dr Mills came into the office after the initial greetings, he was ready to listen. Really listen. He was thorough and patient and understanding about my fears. The physician that I saw at a different clinic prior to my appointment with Dr Mills, was condescending, impatient and dismissive. I look forward to getting the answers I need after my prior surgery. Thank you Dr Mills."
"Dr. Mills has been my gastroenterologist for several years and has always listened to my concerns with respect & given me excellent treatment to try to eliminate my problems. He is a professional that you can easily relate to. I highly recommend him."
"Dr. Mills has been my GI doc for 15 years. He is kind, compassionate and listens to what you say. He understands Ehlers- Danlos and knows how to help patients who have some unusual health issues associated with it. I value him as an important member of my health care providers!"
"He is so caring, a truly lovely human being!"
"Dr Mills 11 out of 10. Great practice. Hope I feel the same after my colonoscopy 😲"
"Dr. Mills was very professional, thorough, kind and he really listened."
"I have used Dr. Mills for the last 6 year’s. Very professional, efficient. It is a easy, comfortable process. Never had any problems before or after the process. I highly recommend Dr. Mills M O 03/07/2022"
"Best GI doctor in the valley!"
"Great doctor!"
"Dr. Mills has been a phenomenal specialist that has been very helpful with diagnosing and managing my issues. He is extremely knowledgeable and talks to you in a way that you can understand. I would recommend him to anyone."
"Michael Mills, MD is an outstanding physician. Since being his patient for over 30 years, I have continued to have him as my Gastroenterologist even after moving my PCP and other care to Mayo Clinic. He is very well thought of by the Mayo team with one doctor telling me “ why would you ever leave one of the best in his specialty”! I totally agree - the best in his specialty. This review is regarding the physician but his entire practice staff! Always professional and thoughtful about the patience needs!"
"Dr. Mills is the best. I don’t need to try any other gastroenterologist because I KNOW Dr. Mills is the best. He has the best bedside manner and carries that same demeanor into the office."