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.

Reviews for ADH Mesa - East

4.0 Review from W.S. Source: Google Mar 24 2023

"Staff, from front desk through Doctor/NP/PA and everyone in between all very cordial, and professional. The lone detractor is the telephone system."

5.0 Review from S.“. Source: Google Feb 26 2023

"Fantastic doctor and nurses."

5.0 Review from Z.P. Source: Google Feb 15 2023

"Excellent! Everyone was very nice."

5.0 Review from R.A. Source: Google Feb 14 2023

"In and out in a matter of minutes."

5.0 Review from P.A. Source: Google Feb 10 2023

"Very professional and knowledgeable."

5.0 Review from K.S. Source: Google Feb 01 2023

"Friendly staff, quick check in, short wait time. Knowledgeable and listen to your concerns and work with you on a health plan."

5.0 Review from E.E. Source: Google Jan 24 2023

"I have been a patient for over 8 years. Very professional and personal focused services. Ms. VanDam has provided very thorough explanations relating to my issues and also explains the results and options in detail. Highly recommended."

5.0 Review from B.C. Source: Google Jan 20 2023

"Great staff and wonderful dr. Honest and gentle will listen to you and your concerns"

5.0 Review from J.K. Source: Google Jan 20 2023

"All the staff I dealt with were very personable, knowledgeable and dedicated. The whole process was an enjoyable experience."

5.0 Review from P.S. Source: Google Jan 11 2023

"I had gone to see Dr. Stein in 2013. While I didn't see him on my last visit, the gentleman who got all my information and the woman, who scheduled me for my January 2023 appointment were both wonderfully professional. They answered all my questions in a simple and easy-to-understand explanation. I'm definitely looking forward to seeing Dr. Stein in a week!"

5.0 Review from R.B. Source: Google Jan 11 2023

"I was treated very nicely. The employees were very professional and polite. I felt very comfortable while I was there."

5.0 Review from G.E. Source: Google Dec 29 2022

"Lindsay was very receptive to my questions and made appropriate recommendations. I will come full circle if necessary"

5.0 Review from T.S. Source: Google Dec 29 2022

"Very understanding and kind."

5.0 Review from B.B. Source: Google Dec 29 2022

"Very good service and staff"

5.0 Review from H.S. Source: Google Dec 24 2022

"Had a procedure done recently with Dr. Umar and "the staff"... I could'nt express how professionally everyone was and made me feel so comfortable during the whole process.. That facility is AWESOME!! I appreciate you all...."

5.0 Review from M.J. Source: Google Dec 23 2022

"Dr. George Walker is THE BEST! So IS Lindsay, his NP. Thorough, professional, kind and great listeners. Totally satisfied with this Group. Grateful!!!"

5.0 Review from L.S. Source: Google Dec 16 2022

"I think the staff and nurses are very friendly. I love Dr. Stein and his N. P. Shuana. They make me feel very special and concern about my needs and what issues I'm having with my health."

5.0 Review from M.S. Source: Google Dec 16 2022

"The office staff is efficient at processing large numbers of patients. Nurse Practitioner and Medical Assistant were thorough and friendly"

5.0 Review from D.L. Source: Google Dec 14 2022

"It was the most pleasant experience I have had."

5.0 Review from E.F. Source: Google Dec 14 2022

"I had an appointment with Shauna who was very professional and pleasant. She took her time with me making sure all my questions were answered thoroughly."

5.0 Review from A.E. Source: Google Dec 10 2022

"Quick, efficient, informative consultation for upcoming colonoscopy that I'm not looking forward to but, ya gotta do what ya gotta do."

5.0 Review from P.A. Source: Google Dec 08 2022

"Five stars friendly staff answered all my questions and was a comfortable visit."

5.0 Review from P.C. Source: Google Dec 07 2022

"Very professional and helpful"

5.0 Review from D.L. Source: Google Nov 23 2022

"Arizona Digestive Health went above and beyond in working with me and the insurance process. I appreciate their flexibility."

5.0 Review from G.B. Source: Google Nov 23 2022

"Lindsey Van Dam was fantastic, I felt very comfortable and she was very professional. So happy with my appointments!"

5.0 Review from J.S. Source: Google Nov 22 2022

"(Translated by Google) Excellent attention by all staff. (Original) Exelente atención por todo el personal."

5.0 Review from R.G. Source: Google Nov 22 2022

"Awesome 👌"

5.0 Review from C.V. Source: Google Nov 11 2022

"A very thorough and caring experience."

5.0 Review from K.M. Source: Google Nov 09 2022

"Fast efficient service. Educated me on the upcoming procedure"

4.0 Review from D.J. Source: Google Nov 08 2022

"Shawna and Kirsten were positive, caring as well as knowledgeable."

5.0 Review from P.D. Source: Google Nov 08 2022

"I had digestive problems for 2 weeks with severe gas and pain from food poison. Met with Lindsay and she gave me famotisine after 4 days I got some relief."

5.0 Review from B.R. Source: Google Nov 02 2022

"Lindsay Van Dam was amazing she took the time to review everything and explain the next steps that needed to take place in detail. I would definitely refer anyone to her."

5.0 Review from S.A. Source: Google Nov 02 2022

"Lindsey was very attentive and professional, answered my questions and I totally recommend this place."

5.0 Review from J.C. Source: Google Nov 01 2022

"Always very professional, prompt and caring. Highly recommended!"

5.0 Review from D.J. Source: Google Oct 25 2022

"Very good experience. Great staff; knowledgeable, efficient and pleasant."

5.0 Review from J.H. Source: Google Oct 25 2022

"Each time I go in to see Shauna (&/or Dr Walker), they sit, look at me, ask me questions and answer all of mine. I’m as important as my meds and symptoms. I always leave with understanding more, understanding my treatment options as well as changes in my symptoms and how medications work as well as side effects to recognize. The waiting room and treatment rooms are spacious and comfortable. Wait time is usually less than 15 minutes. My experiences are that all of the staff are friendly, conscientious and compassionate. I feel fortunate that Arizona Digestive was recommended to me and I feel confident in Shauna’s care."

4.0 Review from J.S. Source: Google Oct 24 2022

"2 people did not introduce themselves to me. I asked who they were. The CRNA and Dr. Stein. Didn’t feel very welcoming."

5.0 Review from G.S. Source: Google Oct 24 2022

"Very pleasant experience and very professional staff."

5.0 Review from R.L. Source: Google Oct 23 2022

"Dr Cho was my Mom’s doctor and is my doctor! I would not want anyone else! He is the BEST!"

5.0 Review from M.M. Source: Google Oct 20 2022

"AZ Digestive is wonderful with caring staff. Lindsay especially took the time to listen to my concerns and set up the appropriate appointments. Very pleased with the care I have received thus far."

5.0 Review from B.L. Source: Google Oct 19 2022

"Professional and caring"

5.0 Review from J.K. Source: Google Oct 12 2022

"I have always had great experiences at Arizona Digestive Health, the staff is nice and helpful. I had an appointment with Nancy, Dr. Zierer’s associate she handled my concerns and took the time to listen to what I had to say."

5.0 Review from G.R. Source: Google Oct 11 2022

"Excellent care"

5.0 Review from D.D. Source: Google Sep 29 2022

"Great Doctors very caring staff"

5.0 Review from S.K. Source: Google Sep 20 2022

"Dr. Stein is a professional who listens/advocates for his patients. I decided to schedule a visit with him after reading the positive reviews and I was not disappointed. On the day of my appointment, the receptionist was friendly and check in was simple. Maria, the medical assistant who brought me back to the exam room, was friendly, attentive, and professional. Dr. Stein walked into the exam room accompanied by an assistant who takes notes throughout the visit. This was great as it allowed Dr Stein to have a natural flow of conversation instead of having to continuously stop to take notes. I mentioned to Dr Stein some testing I had done and he was able to locate the results and share them with me during the visit. I left the visit with a plan in place and with the feeling that I was in competent hands."

5.0 Review from C.W. Source: Google Sep 20 2022

"Everyone at the office was terrific. The girl at the desk was friendly and helpful. Troy was a pleasure and very much able to put me at ease. Shauna was great as always. She seemed to ask all the right questions and had answers for my questions. All in all, it was a great experience. 👍"

5.0 Review from R.S. Source: Google Sep 20 2022

"People are really friendly, and everyone has a smile on their faces..."

5.0 Review from C.E. Source: Google Sep 20 2022

"Dr. Vulcano was so nice and took the time to explain everything. When you are scared his kindness really goes a long way. The nursing staff and anesthesiologist were also wonderful and kind on the day of the procedures. His MA was also amazing and made me laugh after the PA scared me out of my mind with a possible dx. That's the negative experience I had. I felt there was no reason to throw out a frightening dx that I hadn't even considered with the statement "do you understand what that means?" which I did. It wasn't that thankfully but the weeks after, while waiting for the testing, were torturous. The rest of the staff from the front desk to the follow up call were fantastic. I will continue to follow up with this office as long as I live in AZ. I can't recommend this place enough. Truly amazing people work here. I'd like to thank them for everything they did to help me through this process."

5.0 Review from L.S. Source: Google Aug 04 2022

"Awesome staff and wonderful NP. I would highly recommend Az Digestive Heath East Mesa! I didn’t have to sit and wait forever which is a big plus!!"

5.0 Review from J.J. Source: Google May 25 2022

"Very caring. Everyone was professional and kind."

5.0 Review from J.M. Source: Google May 05 2022

"I had an excellent experience with during my recent visit. I love this office, doctor, and NP."

5.0 Review from R.P. Source: Google May 03 2022

"Very nice job these people really care about the pacence health, and solve the problem."

4.0 Review from J.K. Source: Google Apr 28 2022

"The facility is a little small especially when it comes to clients that require assisting disability equipment ie:wheelchairs * (especially), walkers, electric wheelchairs/scooters.. The waiting area is way to small especially if you need to bring someone with to assist The staff are wonderful!!! however I experienced some problems receiving "timely" information/forms that needed to be filled out prior to procedures/appointments and there seemed to be some communication difficulties between providers, the facility is way to small for the volume of procedures being done!!! Other than that above mentioned it is a great crew to work with. Thank you for everything!!! Jennifer Klick"

5.0 Review from C.T. Source: Google Apr 19 2022

"Very friendly and interactive registration staff. The MA was professional and friendly in answering my questions. Shauna B, ANP provided very professional exam and great communication to understand my medical issue"

4.0 Review from T.T. Source: Google Apr 14 2022

"Very informative when going through recent hospitalization records to find the real issues. They were very helpful."

5.0 Review from H.A. Source: Google Apr 11 2022

"A very professional/staff."

5.0 Review from L.F. Source: Google Feb 19 2022

"Love Dr Stien and Staff!!! Been going there for 10+ years now. My boyfriend liked him so much that he started going there too!!! Dr Stien listens to you and is very thorough. I would highly recommend him for anyone looking for a GI doctor."

5.0 Review from J.M. Source: Google Feb 02 2022

"Excellent care! Very professional and detail oriented. I never felt hurried. All my concerns were thoughtfully listened to and addressed."

5.0 Review from R.S. Source: Google Feb 01 2022

"They are very professional and thorough. I have been going to them for years and will continue to do so!"

5.0 Review from L.O. Source: Google Dec 31 2021

"I am having swallowing plus lower stomach issues. These problems were addressed by the medical staff at AZ Digestive Health. I left there feeling much better going forward. I would highly recommend these people to anyone having Digestive Health problems."

5.0 Review from S.H. Source: Google Dec 21 2021

"Arizona Digestive Health East Valley has friendly and professional staff and doctors. I’ve been going there for a while and I’m grateful to find a good place that cares about my health."

5.0 Review from K.H. Source: Google Dec 10 2021

"I have found the doctors and nurses to be very knowledgeable and friendly!"

5.0 Review from S.B. Source: Google Nov 04 2021

"They were great and found out what the problem was and gave me the medicine to get me well. Nice people and special thanks to Dr. Van Dam."

5.0 Review from D.S. Source: Google Oct 17 2021

"I was really pleased at how everything turned out. The IV is my biggest fear, but my nurse was incredibly gentle and was able to get it in the first time! Only the tiniest bruise! The doctor and crew were funny and easy going. Everyone was wonderful!"

5.0 Review from B.H. Source: Google Oct 03 2021

"Arizona Digestive Health is an outstanding health provider from Dr Ziere to his PA Shauna Binette. Front office staff So friendly and helpful! I was greatly impressed. Thank you Arizona Digestive Health for your excellent care!"

5.0 Review from L.M. Source: Google Sep 17 2021

"Staffs are all professional & so orderly !"

5.0 Review from G.R. Source: Google Sep 15 2021

"Every step for the procedure was easy. The office and medical staff are very efficient and professional. Would highly recommend!"

4.0 Review from K.C. Source: Google Sep 01 2021

"The only reason I rated them a 4 is because I just started going to them. The care and service I have received so far has been great."

4.0 Review from P. Source: Google Sep 01 2021

"Previous procedure went without a hitch. Julie is the best in helping me get set up."

5.0 Review from D.C. Source: Google Aug 20 2021

"Dr. Umar is my doctor. He and his staff are very professional. I would recommend to anyone."

5.0 Review from K.P. Source: Google Aug 19 2021

"The staff there is very friendly and helpful. And very knowledgeable. I feel valued as a customer."

5.0 Review from M.M. Source: Google Aug 19 2021

"Wonderful, great facility, great personnel!!"

5.0 Review from C.S. Source: Google Aug 11 2021

"My experience at Arizona Digestive Health was friendly and helpful. I would recommend it to anyone searching for internal care"

5.0 Review from N.C. Source: Google Aug 04 2021

"Excellent care by Dr Collins during a critical GI bleed. His professional timely attention and follow-up with explanations in lay terms gave us encouragement & confidence that we were in good hands. Following appointment with his staff, especially Shauna, nurse practitioner, showed care above and beyond ordinary. She took a personal empathic interest, even to the point of arranging a change of appointment with another specialist, so we did not need to handle that. Wonderful caring competent team; we feel fortunate."

5.0 Review from R.M. Source: Google Aug 04 2021

"The girl was really nice, I think her name was Rebecca, I liked her a lot!!"

5.0 Review from S.S. Source: Google Jul 21 2021

"Doctors who actually listen to you. So glad I finally found a doctor who takes the time to listen and hear what I am experiencing."

5.0 Review from K.H. Source: Google Jul 14 2021

"The process was fast and easy. Everything was done the way they said it would be done."

5.0 Review from P.G. Source: Google Jul 02 2021

"Shauna the NP is awesome! Very personable, informative and makes you feel instantly at ease."

5.0 Review from T.F. Source: Google Jul 02 2021

"Very highly recommend . Very responsive to your needs. Will recommend to my family and friends."

5.0 Review from I.J. Source: Google Jul 01 2021

"Everyone is very caring, and have concern for your health."

5.0 Review from J.S. Source: Google Jun 30 2021

"I have recomended Dr Stein and his NP. Both are awesome. They take their time and answer all of your questions. I do have to say though that the front office needs to learn how to be more courteous with patients."

5.0 Review from J.W. Source: Google Jun 15 2021

"The visit to Dr Vulcano's office, Digestive Disease Consultants, was a very good experience. He was pretty much on time and very professional. He performed an endoscopy at this office and it was quick and painless. I would recommend Dr Vulcano in a heartbeat!"

5.0 Review from I.R. Source: Google Jun 15 2021

"It was a pleasant experience all around . I would recommend him to my family and friends ."

5.0 Review from L.M. Source: Google Jun 05 2021

"They are the best ! Dr. Walker and Dr. Collins have provide the very best care. I highly recommend them. I have recommended them to my family members. That says it all."

5.0 Review from W.L. Source: Google Mar 02 2021

"Alay treated me right. Answered my questions and how I wad being treated."

5.0 Review from S.G. Source: Google Jan 22 2021

"I have very complicated GI issues. In the hospital years ago, this nice Dr came in to check me.....that was it....I asked what group he was with and if they are accepting new patients. That was over 13 yrs.ago. Dr. George Walker is amazing, intelligent and sensitive while being professional. Great office staff on top of it!! I hope Dr. Walker NEVER RETIRES!!! Susie"

5.0 Review from A.L. Source: Google Jan 16 2021

"Everyone there has been amazing, nice and accommodating. I felt very comfortable and well taken of. Thank you- Dr. Zierer and staff"

5.0 Review from D.A. Source: Google Jan 16 2021

"I just want to thank EVERYONE, from my appointment to my procedure. Everyone there has been beyond amazing. As for my procedure, I was nervous. Everyone there was so nice and accommodating. I felt very comfortable and well taken care of. I was only sad to leave, lol... I wanted to sleep longer jk. I was glad to go home and that it wasn't as uncomfortable as I thought it would be due to the care that I had. THANK YOU TO EVERYONE! FROM THE BEGINNING TO WHEN I WENT HOME. Thank you Dr. Zierer"

5.0 Review from B.G. Source: Google Aug 29 2020

"Dr. Ramsey Umar and his team are awesome! From checking in to his office for my appointment to checking into the surgical center for my procedure and discharge, everyone was polite and caring, thank you all. And Dr. Umar, patient, kind, responsive and competent! Yes, I am happy ❤️ Thank you all .... Bob G"

5.0 Review from M.H. Source: Google Oct 17 2019

"Best experience in a digestive specialist’s office I’ve ever had. I was referred to Dr. Walker. He was very helpful. He listened and explained things very well. We had a lengthy exchange of info, just like an investigator would, in an effort to get to the bottom of my medical issues. Very well-spoken, dow to earth, knowledgeable and informative doctor. The front office staff were friendly and welcoming and most of the back office staff were just as lively. Not one person was short with me, impatient or dismissive of me. I’m grateful my primary doctor sent me here."

5.0 Review from S.S. Source: Google Apr 09 2018

"My experience at East Valley Endoscopy was actually a fun and relaxing procedure. Thanks to all of the staff, Dr Zierer was so friendly, understanding and patient.They all took the time to explain everything about the procedure, even though I was nervous. I felt comfortable going in for the procedure and had no worries that I was well taken care of. Thank you to the whole staff for making my procedure fun, relaxing and worry-free. I will highly recommend you to my family and friends. See you in 10 years. Sincerely, Sonja Smith"

5.0 Review from J.S. Source: Google Jan 16 2018

"I have the utmost trust in Dr Stein and his partners. The are very kind and professional"