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.
Filter By Ranking
Filter By Source
Filter By Person
Filter By Procedure
"Excellent physician and staff. I have been a patient for an extended time and can vouch for the aforementioned comments."
"Diligent and keeps me informed."
"Went in with Bad guts ... Now my tummy loves me thanks doctor.."
"I've been going to Dr. Zierer for many years. He has taken care of me and my issue very well for all these years."
"Highly skilled, but difficult to get a current appt."
"Was referred to his office for a consultation over possible internal bleeding. Was asked several questions then was immediately scheduled in for a gastroenterology the next day. He explained what to expect from the procedure and reassured me before the anesthesia."
"Dr. Zierer is a great physician and he has always been attentive to my questions about my treatment plan."
"I am so impressed with Dr. Zierer. He is prompt and explains things well. I am feeling much better. I highly recommend Dr. Zierer."
"Very good experience. Dr. Zierer is very approachable and welcomes any questions that I might have before and after the procedure. He and the nurses were very professional. He will be doing the same procedure on my wife very shortly."
"My appointment with Dr Zierer was very pleasant and informative, It was just a check up appointment and all went well. I would recommend him highly."
"I really felt like Dr. Zierer listened to my concerns. I have been trying to find answers about my health for a long time and most Dr have said they just don't know, but Dr Zierer asked more questions and has some possible tests and solutions. It was nice to feel heard and not dismissed."
"Loved the dr and the visit with him"
"The price staff is polite and professional, they care about the people. The building is very clean and well organized. The doctors are informative and welcoming. They do not crush through your visit. They provide a great deal of information both verbal b and printed."
"Both Dr Zierer and staff very friendly and helpful. Appointment ran on time, etc."
"Didn't wait long to be seen. Dr Zierer explained my results so they were understood."
"Dr Zierer is excellent physician,he answer all My question,take a time to explain me and give advice"
"Dr Zierer is has the best bedside, caring attitude of any Doctor I have seen. He believes in treating patients with honesty, listens and always open to your feelings/suggestions. I feel extremely lucky to have him as my doctor because I am not an easy patient with multiple health problems. I can't suggest him more."
"Professional, informative, punctual and efficient. Well and comprehensively documented pre-procedure prep with timely follow up from support staff."
"Dr Zeirer has been my gastroenterologist for a number of years and my ...oscopies have been pain free."
"Dr. Zierer and his team are incredible! After numerous doctors, I saw Dr. Zierer who was able to ask the right questions to determine the right solution."
"The staff is friendly and efficient and Dr Zierer makes sure all your questions are covered. My husband and I both highly recommend his office."
"I have been seeing Dr. Zierer for many, many years. He and his staff have been excellent for me...going "above and beyond" the call of duty. I am glad I have them."
"Excellent on all phases of my care"
"Dr. Zierer and his staff at East Valley Endoscopy and Arizona Digestive Health provides outstanding service and care to those of us lucky enough to have him as our doctor. Though colonoscopies are no fun, it is a life saving procedure and he and his team are the best at their jobs. Caring and attentive describes them all and I'm glad I was on the receiving end."
"Dr. Steven Zierer is a wonderful, professional, & thourogh Gasteroligist. I would highly recommend him. Great bed side manner!"
"Dr Zier is taking care of Steve G and he says he’s always very personable and professional. Takes time to talk and explain everything"
"Dr Zierer a skilled Gastroenterologist. Thorough and to the point."
"I was extremely impressed with the quality of care for my visits by all staff. Thank you!"
"I was very pleased with the care I recieved at Dr. Zierer's office. He put me at ease about the up coming procedure I have scheduled. The office staff are very thorough when going over the preparations for the procedure."
"He’s very good. Takes the time to explain everything and will present options along with his recommendations and why. He’s friendly, knowledgeable, and gives you his complete attention. I highly recommend him"
"Everyone was very friendly. Would highly recommend him."
"Dr Zierer has taken great care of me for many years and saved my life a few times as well. He spends time with you, listens to you and has a great sense of humor. It's what you need when facing the unpleasant effects of gastro illnesses. Wait times for appts are minimal. Usually 15 - 20 min. The staff is friendly and attentive."
"Dr Zierer was great and very professional. I was referred by my primary care physician and was very impressed with the knowledge and care he demonstrated. I would highly recommend him and his staff. I had no wait time and he spent extra time explaining everything to me."