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.
"I had a good experience at this place.Staff was very polite and knowledgeable.They all made you feel at ease during an awkward procedure.Dr.Brenan was very professional and gave you feedback promptly."
"Dr. Brennan is a very professional, warm, and friendly physician. He answers all your questions and takes his time speaking to you and does a thorough examination. I highly recommend him for your GI needs."
"I am a new patient of Dr brennan. I was so impressed with him. He actually called to give me results of my blood test. It wasn’t Nurse. It was him. That is so unusual. In today’s times he took his time with me. I really was very impressed."
"This was an awesome place! Everybody there were so professional and kind. They took very good care of me. Would definitely recommend to anyone"
"Went in for a colonoscopy. Staff was awesome! Very little wait and all the nurses and doctors were friendly and comforting. Highly recommend."
"First visit with Dr. Brennan. He addressed my issue and I came home with a plan to start with. Nice doctor and office staff."
"He is a excellent doctor and caring and explains things real well so you can understand it."
"Quick, orderly and professional service."
"Dr Brennan is so compassionate. The office runs smoothly. You are treated very special by everyone there. Great Dr and clinic."
"My first visit, I already felt comfortable with Dr. Bennan and felt that he really took the time to listen to me."
"Quick, orderly and professional service."
"Great experience with Dr. Brennan and his team. Clean office with friendly staff. Procedure was pretty efficient and painless. Will definitely schedule all my GI procedures here."
"Dr. Brennan and his office staff have always been kind to me and willing to help with any questions. I would recommend this practice to others."
"Great service. Very professional. Very organized"
"Super friendly and professional staff. Made everything easy."
"On time quick and thorough"
"The staff was friendly, professional, and made me feel very relaxed. Thank you everyone for making an uncomfortable procedure be so comfortable."
"Great doctor"
"Wonderful service 👏"
"The staff was excellent, took great care of me from the time I came in the door, thank you all so much"
"Great atmosphere for what normally is a not so comfortable procedure. Dr Brennan and his team provide Five Star service!"
"Dr. Brennan and staff is very professional and love the atmosphere. Dr. Brennan is very detailed and understanding."
"Had a great colonoscopy. Took a nap and woke up and had a Dr. Pepper. My colon never felt so clean."
"Dr. Brennan has a different approach. He deals more on education level."
"Amazing staff"
"Dr Brennan was very friendly and professional. He explained the procedure in its entirety and was also very informative afterwards. The facility along with its staff were top notch. I highly recommend Dr Brennan and GI Alliance."
"I'm very grateful that Dr. Brennan performed my colonoscopy. He was very thorough and provided me with information about what was going to happen during the procedure."
"It runs like a well-oiled machine…I was in and out in less than two hours…including paperwork at beginning!!"
"Dr. Brennan is a very nice doctor! My procedure was a very pleasant experience! All of the staff there were amazing as well!"
"Doctor and staff were so nice and gave me good care. Very pleased to become one of his patients"
"Dr. Brennan and the nursing staff at Mansfield Endoscopy Center are wonderful. They took very good care of me and were so kind and caring. They answered all of my questions and made me feel very comfortable. I can’t say enough good things about the treatment I received!"
"Excellent, professional service!!"
"Dr. Brennan and his staff were friendly and efficient. I felt well cared for and would recommend while-heartedly."
"Wonderful people from top to bottom"
"The treatment was great. All staff was very friendly making you feel comfortable. All questions answered by doctor. Great experience overall."
"Everyone at the office was helpful, pleasant and happy. The whole atmosphere of the office was one of helpfulness."
"Dr.Brennan is a great doctor. He takes the time to see you before and then again after a procedure. He makes you feel he cares a bout his patients. He is prompted and straight business when it comes to the procedure. Then calm and welcoming when discussing thing with you. I will recommend him to anyone."
"Dr.Gregory Brennan and his staff was courteous And Answerall of my questions and concerns about the procedure that I had on my last visit June 6, 2023"
"GREAT DOCTOR, first of all he listens which number 1 on my list, 2nd he cares about my health and well-being. Moreover he'll make changes to my scripts and and asks me if it helps and which symtoms are better or worse. Like said already, great doctor and person."
"Very very professional guy with a great staff!!"
"Thank you for listening to my needs, as well as remembering me. You were a0ble to supply me needs. Hopefully my blood work is not to bad."
"Great staff. All very friendly and go out of their way to make sure you're comfortable. They explain everything clearly and are happy to answer any questions."
"Very knowledgeable and above all friendly."
"Desire for Colonoscopy honored with precise details that satisfied me."
"My procedure by Dr. Brennan and his staff was flawless. They kept track of my comfort level and answered all my questions. I highly recommend them."
"Excellent care and wonderful staff. Dr explained everything in detail before and after."
"The staff from start to finish was top notch. He was thorough and explained and made sure I had no questions."
"He is a amazing doctor. I recommend him if you need gastroenterology."
"I would like to compliment the staff at Dr. Brendan's office. They are the most caring and efficient staff at this medical center. They provide the best caring service. I was so impressed that I truly recommend Dr. Brennan and will continue to see him as my GI doctor because he's an excellent doctor. I was very pleased with his services."
"He is a good dr. I have only seen him once but his staff is so efficient and helpful."
"Dr. Brennan is a caring physician who gets to the bottom of what's wrong with you. I appreciate that."
"He is very attentive to the patient’s concerns and ready to tackle the problem"
"Dr Brennan and the staff were very professional and caring!"
"Dr. Brennan is a great doctor."
"Excellent"
"Excellent Dr. explains everything in terms I can understand."
"After being in pain and sick for a few weeks and taking medicine prescribed by my PCP who is an excellent doctor...I was referred to Dr Brennan...he was very helpful... advised me on what to do and scheduled test for me...he was very confident and I had no pain or anxiety just a couple of days after seeing him..my test are upcoming and normally I would have a lot of anxiety and stress...and I have neither.. because of his confidence.and assurance. l highly recommend Dr Brennan and his entire staff was helpful ... friendly and reassuring. I am so thankful I was referred to him and his team."
"Everything went great he was very nice and explained everything that was going to happened that day. Great work to his team of nurses and the lady checking us in. Thank you!"
"Very polite,professional, explained everything well."
"Dr. Brennan was informative and answered my questions and didn’t act like I was taking up too much of his time. The ladies in the office were all wonderful."
"Dr. Brennan is very thorough and absolutely attentive to his patients. I am bringing my entire family to his practice and would recommend anyone who is looking for a doctor who makes you feel like family. Cannot recommend him enough!"
"Dr. Brennan is a great doctor."
"Very patient and understanding"
"Great Doctor! Very professional and your not going to remember Anything!!"
"I recommend my forever doctor. If I can say smooth, nice, kind, and do the job as instructed. Dr. Brennan definitely saved my Life and I truly pray God continue to bless him and his practice! Blessings #YourAwesomeDoc"
"Dr. Brennan was great to listen to all of my issues and to respond in a caring and compassionate way."
"Dr. Brennan saw me on a Tuesday for the first time. He listened to my concerns and asked me if I would feel better if he scheduled a colonoscopy. He went above and beyond to get me in on Thursday. Fortunately, everything looked good and I’m happy and have peace of mind. He listens and reacts! I’m glad to have a gastroenterologist as needed!"
"Dr. Brennan is very professional and listens to his patients and takes immediate action when necessary."
"Dr. Brennan is very thorough and absolutely attentive to his patients. I am bringing my entire family to his practice and would recommend anyone who is looking for a doctor who makes you feel like family. Cannot recommend him enough!"
"He took care of my Mom. I would recommend. Thk you Dr.Brennan"
"May 2021, I came close to going to see my LORD and SAVIOR, with a failing liver and losing blood from both ends. Dr. Brennen just happened to be on call that night. He found esofagel varacies. He banded the bleeding vessels and I haven’t lost any blood since. Although I was in a coma for 2 days, he literally saved my life."
"Doctor Brennan and his entire crew are amazing! I was very apprehensive about my first colonoscopy, but Dr. Brennan and his entire team were extremely professional which made me feel very much at ease. The entire procedure was very quick and painless and they were extremely courteous. I would highly recommend Dr. Brennan and his entire staff."
"We just talked about the upcoming procedure and he listens well."
"Very good facilty and staff. So nice, patient, and clean. The doctor was good and explained everything in detail and afterwards."
"No Problems. Made it seamless."
"Everyone made me feel comfortable and like I was their only patient."
"Great bedside manner. Kind and personable. Listens to what you are saying to him. Cares for his patients with genuine concern."
"A doctor who listens while looking me in the eye."
"I was dreading my colonoscopy, but Dr. Brennan and staff made me very comfortable, wait time was minimal and procedure time was on time. He and his staff are outstanding!"
"Nice doctor and he was polite still waiting to hear from heart doctor he was going to set me up with other than that all good"
"I liked that the waiting time was quick. Staff always has a smile for you. Doctor Brennan is always attentive to his patients and their needs."
"I moved to Texas from the Midwest and it took me almost 2 years to find a good GI doctor. Dr. Brennan has listened to me and given me hope on my treatment."
"This was my first colonoscopy and I was very pleased with the level of comfort I received from Dr Brennan and his staff."
"From the moment I walked in the drs office I was treated so well by all the staff. The entire staff was extremely nice, and professional and were happy to answer any of my questions, they even played my favorite music. Dr. Brennan is a wonderful man and doctor who was professional the entire time!"
"The day of my procedure couldn’t have been better. The entire team Dr Brennan has is excellent, efficient, friendly, and great at what they do. I felt comfortable and well taken care of. I’d recommend him to any of my closest friends and family."
"Dr.Brennan was very explainable .friendly"
"Excellent service and care"
"Very knowledgeable doctor and will definitely be back to see him."
"I’ve had the best experience with Dr. Brennan. Through my hospital stay to having office visits afterward and the colonoscopy. Dr. Brennan and staff are very helpful. Will to take the time to answer all my question. I would highly recommend Dr. Brennan and his staff."
"Very professional office staff and Doctor."
"Dr.Brennan was very thoughtful and knowledgeable as specialist and was MORE than willing to take the time to explain in great detail my mother's Plan of Care..."
"I recently had a colonoscopy by Dr. Brennan. This office was very attentive to all my needs and Dr. Brennan was great, very nice and professional. I would highly recommend him."
"Dr Brennan listened to me and put me back on my medication. I really appreciated him listening to me. He heard my concern and properly addressed it. Thank you 😊"
"He was very nice and easy to talk to"
"Dr. Brennan and his entire office were amazing. The OR team did such a good job as well. So glad I found this facility!!"
"My first time seeing Dr Brennan. The office staffs are very professional and made me feel welcome. I was seen in a timely manner. Dr Brennan was very patient, I don’t feel hurried and he made me feel comfortable to discuss my medical issues."
"Thoughtful and attentive experience for my first colonoscopy. Everyone introduced themselves (front desk, nurses, nurse anesthetists, and doctor). They frequently checked for any needs I might have. If you’re not a regular patient at the practice, the doctor will meet you before and after the procedure. I have a medical background but I do not volunteer that info to my caregivers when I am the patient because I’m not at work, I AM THE PATIENT. With that said, be sure to ask questions or have someone with you who will ask questions after the procedure in case you’re thoughts are in the haze from the anesthesia. While the doctor will tell you what he did, removed polyps in my case for example, he did not face to face explain to me what polyps were and why they had to be removed. Maybe there were handouts that explained it but I admit I have not looked at the paperwork since leaving there. Even so, any handouts should reinforce what the doctor has already told you, in my opinion. Overall, I would definitely recommend this practice."
"My experience with Dr Greg Brennan at THR Mansfield ER, and at his office was highly impressive. He is compassionate, considerate and concise with his judgement. He has a positive aura that gave me confidence that God had me in hands that He can trust. 🙏"
"I really just went to him 1 time and cannot honestly give an opinion on the first visit."
"A doctor with empathy, rare"
"All of the staff were very professional and really friendly, positive, and good natured. The procedure went very smoothly with very little wait time."
"Dr Brennan was very pleasant and professional in his mannerism. He was informative regarding my health needs. He provided knowledge of my medical history and executed a plan of care to my satisfacton. I would highly recommend Dr Brennan to someone requiring a GI physician."
"I would definitely recommend my family to see him if they were experiencing any problems that he covers in his field. He is great!"
"Our first time meeting the doc -very friendly, listens well and patiently."
"Dr. Gregory Brennan and his staff were all awesome when I went in for a colonoscopy. Everyone from the front desk to the pre-op nurses, the operating room team including anesthesiologist, the recovery room nurses, and of course, Dr. Brennan. All very professional yet very caring and all couldn’t do enough to make you comfortable and to make the experience as pleasant as possible. I highly recommend Dr. Brennan and his team at GI Alliance, Mansfield, TX."
"Everybody was very nice & I really impressed w/Dr Brennan. He was very informative , & made me feel at ease about the procedure. Thank you to that office."
"I am a 67.yr old woman with a lot of gastroesophageal problems. Dr Brennan saw me for the first time the other day. I was thoroughly impressed with my experience with Dr. Brennan. He's already ordered an EGD, changed my medication. He is very through. He appeared to care about me the person. I think I'm going to enjoy this relationship. We can deal with the GERDS when we go in for the dilation. I look forward to having Dr Brennan as my doctor for rest of my life . His staff is also very courteous, kind, and professional. Thank you"
"Very professional and helpful"
"This was my first visit. The staff were very professional. The Doctor had an interest in my situation. He listened, had questions and answers my questions. I am waiting to see what would be the next step to help me with my issues."
"Great DR he helped me when my dr was out on leave a few weeks ago."
"Dr. Brennan was caring and concerned. He listened to my symptoms and treated me immediately."
"Very professional people,The Doctor interview is very helpful and very professional I very happy with the experience and results thanks Doctor Gregory Brennan and her team."
"Good Dr. good staff. Talks to you on your level."
"Dr brennan and staff are great. They are thorough, proactive, and are willing to educate the patient."
"From making the appointment and then to see the doctor, went very smoothly. The staff was very nice and pleasant.. I rarely post about my appointments but thought it is rare to come across these days a doctor that listens and takes the time to talk about your issues without feeling rushed. Dr. Brennan’s bedside manner is very exceptional!!! I will definitely refer anyone to him!"
"I have not seen this dr.yet But called the office to get help and an appointment. She was so nice and helpful. She was also very caring which is what I needed at that moment. Thank you!!!!!!"
"Dr. Brennan is awesome. He gets straight to the problem and solve it with no hesitation. I would refer him to anyone with stomach issues."
"I was very pleased...and felted very comfortabe with both, the staff and Dr. Brenna. I am not computer savvy but the staff helped me navigate through the initial assessment, old school used to handwriting. As for Dr Brennan, the straight forward approach was welcoming with questions asked of me..I knew he was very knowelgeable and well trained as a surgeon..my first ever Colonoscopy..perfectly done without anesthesia, my choice ...and thankful my choice was honored. I have been blessed since our retirement from the Marine Corps to continue to receive or having medical staff provide services as military"
"I was very pleased with Dr Brennan. He was my dr in a hosotial visit this past summer. Staff was real good too. I do however a bill from a credit organization regarding a bill. My medicare statements show payments already paid. I did speak to someone about this already. That's my only issue."
"Dr. Brennan explain to me about the new pill products that has just been released,and gave me the option to be the first to try it . My procedure went well thanks to Dr. Brennan suggestion.Awesome work doc."
"Front line staff was very friendly and professional. Wait time was appropriate. Doctor Brennan was great, he was patient and actively listened to my concerns."
"I truly appreciate and enjoy the services of Dr Brennan. I have been to several other physicians in an effort to at least get an idea of what was causing my unbelievably painful stomach pain and digestive issues, to no avail. To be honest I was being handled like a lab rat. Not one of them were able to give me any definitive answers or even feedback. After going to my initial consultation with Dr Brennan I felt like I was in good hands. He was very easy to talk to and he understood my dilemma. At the end of the visit he looked me in the eyes and reassured me that, “we are going to find out what is going on with you together”. I am very excited about being his patient and I look forward to working with him. I highly suggest or recommend him for anyone who has abdominal issues."
"Dr. Brennan truly partnered with me and my beliefs, offering functional medical treatments that had passed rigorous clinical trials. He answered my questions openly and clearly, was very thorough in his testing and diagnosis of my condition. His staff has always been supportive, professional and exceptionally helpful."
"Dr Brennan is very personable and made me feel at ease. His staff is prompt and knowledgeable. I had an excellent experience!"
"Dr. Brennan has an excellent bedside manner. He is very thorough and also very friendly. He takes the time to listen to my concerns and answer all of my many questions. I have never felt rushed. His office staff is also very friendly. Highly recommend!"
"I have gone to two other doctors and couldn't get in more than a year waiting to try to get in to see a GI doctor was I excited to be recommended to this doctor and he took me in within two weeks I was already in I couldn't believe that and I am so excited and not just that he gave me some proper medicine and I am not in pain I'm out of the bed and I'm up and going my husband's like oh my gosh what just happened and I am grateful that he took the time out to listen to me and gave me the right medication and is treating me well thank you so much him and his office his staff is so wonderful"
"Great customer service. Dr Brennan is vert detail oriented"
"I love this doctor, staff? I was supposed to get treatments a week sooner per doctors orders and here I am a week later waiting for the treatment!!! But I will express this to the doctor and hopefully this gets resolved. But the doctor is excellent and I will continue care with him!!!"
"Very professional, very good patient interface skills!"
"Dr Brennan is very patient and personable guy and answers all of your questions and does not make you feel like just another number, thank you sir to you and your staff"
