I was a patient for nearly two years and consistently experienced poor communication from this…read moreoffice. Getting test results often required repeated follow-ups, and appointment wait times were frequently excessive. My most recent visit was unacceptable. I came in for a follow-up after a serious hospital stay and was turned away because the office claimed they hadn't received a fax, despite it being sent the prior week. No real effort was made to locate it, and I was even refused when I offered to email the records myself. Dr. Dyer never spoke to me directly and instead made dismissive, disrespectful comments to staff within earshot. Given the length of time I was a patient and the circumstances, this was deeply unprofessional. I will not be returning and do not recommend this practice.

I went to Dr. Dyer for about 2-3 years. When you first start going to her, she seems competent and…read moregives you hope. Then it all goes down hill from there.She did absolutely nothing for me with the exception of prescribing me several different medications. She gave me an endoscopy told me that there was a flap inside of my stomach that is supposed to keep the acid out, but mine is not working properly. She never gave me a resolution. I've been calling her office for months, leaving messages. No return phone calls whatsoever. Then she refused to fill my medication again, even though in her own very words, this was the only medication that was left on the market, with the exception of Famotidine. She only works two days out the week Monday and Wednesday and I called leaving several message, begging and pleading for someone to call me back. Never received a return phone call for months. A horrific horrible experience. She did absolutely nothing to help me. If I could give her zero stars, I would. She should be ashamed.

A colonoscopy and endoscopy is not something you look forward to. I was treated with such care…read morestarting with the receptionist when I walked in, to my nurses, Shay and Madeline, plus the anesthesiologist, Valerie and finally from one of my favorite doctors, Dr Jeffrey Nathanson. The procedure easy and I was treated with such amazing care and compassion. I will only go to this office for my Gastro needs going forward!

This was my first time, after two previous procedures through North Shore. They were great. Very…read moresmooth, efficient, but never rushed.

Darren brenner is dangerous person who shouldn't be near patients. He's dismissive unreliable, with…read moregarbage bedside manner. He loses his cool on my chart, and in person. He is unwilling to collaborate with other providers on patients care. He picks and chooses who he will see. He can't even solve a simple gastro issue- let alone anything complex. If you enjoy being spoken down to, I'm treated like crap then he's the doctor for you. Manager was a total waste of time and just as dismissive as Darren Brenner himself. There are no Consequences for reckless northwestern doctors who receive special treatment based on family connections. He doesn't seem to offer much experience, nor does he know what good doctor patient care is. His office staff is okay.

They have poor customer service and they are not good at calling back it's been 3 days northwestern…read moreis falling off

Dr. Michael Williams no longer lives or works in the Chicago area. He has relocated to another…read morecity.

Let's face it. No one likes dealing with GI issues. Ever. My tummy troubles got to a point where…read moreI was referred to Dr. Williams. I'm so glad I got referred to him, as I think he's the bee's knees. No one likes talking to the doctor about the grossness that's going on in your life, but hey, that's all a part of his job. He must like talking about it too since that was his chosen specialty! Long of the short of it, I felt super comfortable talking to him, and it helps he's got a great personality too. He takes the time to listen to all your questions as well as give you feed back as to what you can do to improve the situation. Dr. Williams also does his "homework" and reads up on your files and remembers conversations that you've had in the past. In this day and age, it's hard to find a doctor like him. A+ doctor all around!

Five stars e-visits…read more 1/5 stars office experience do not recommend by a long shot. They had nobody in the office. One person running the whole FoH. There were very few nurses and doctors in back. This place is staffed like a call center. They basically punish people for making an in person appointment. GUESS NOBODY BUT ME AND RADIOLOGY NEED TO SEE THIS FSCKing CAT SCAN! Good as a rapid response urgent care GI service with video visits. Anything more? Mmmmm... When you're 45 minutes beyond my scheduled appointment time. I walk the fk out.

As per my appointment on July 1st, 2026 I was at 1100 Woodfield Road in Schaumburg IL MDHN…read morelocation, I was refused to be seen by doctor AbdurRehman Abdussalam unless I show and give them my credit/debit card physically so that they can keep it on file and use my information any time without my consent in future. It never happened to me in last many decades. I refused to do so because as per my knowledge and law a patient can pay his/her bill or dues through cash, check or credit/debit card. It is an unlawful practice and made up policy of MDHN for its own financial business malpractice in my opinion. Besides, As best of my knowledge I have no dues but in case If I had one which I was not aware of it, I must have been provided the bill at the desk on the day of appointment or I should have been told about it at the time when I made appointment or they should have sent me a notice ahead of time but they failed to do so and my rights to see the doctor was violated. The counter girl was very rude and uncaring. Not only she wasted my time and played with my serious medical conditions (I am 80 years old, I have brain tumor, spinal, nervous system and serious stomach problems and I have gone many procedures) but also my right were violated. I am considering to discuss this matter with an attorney or expert to file a law suit against them.

I really like Dr. Cohen and I came to him to see him during a desperate time in my life filled with…read moresome of the worst abdominal pain I've ever experienced. Dr. Cohen really spends a lot of time getting to know your symptoms and thoroughly investigates your health history for an accurate diagnosis. Dr. Cohen has also made some great suggestions and described these painful events as flare-ups which is absolutely true and something I never realized. I have seen other GI doctors who told me things that were completely false, and or informed me to eat enough fiber which I already count and do as a vegetarian. The GI system is extremely complex and I am happy I can see a medical expert who understands this and can get to the root of the problem.

Dr. Cohen is absolutely wonderful. He performed a procedure I needed and answered all my questions…read moreduring evenings and on weekends. First rate all the way and meticulous.

I like this place for the most part. I've been here twice for two different procedures: endoscopy…read moreand colonoscopy. Before the procedures I had a teledoc appointment, which went well. The doctor was very chill and knowledgeable. The procedures and staff were good. I particularly liked the assistant who worked for the anesthesiologist during the first procedure. She was very upbeat and accommodating. My only issue is that there was limited parking.

I could not have asked for a better experience. Dr. Lotsu and the entire team are all very…read moreprofessional, very nice and very knowledgeable. I had put off this procedure for 5 years because of all the horror stories I had heard from others. The team was very understanding, proactive and the instructions were very clear. I appreciated all the text reminders too - that was extremely helpful!! I am so happy I followed Dr. Lotsu's instructions rather than the ones that were on the prep box or the various "tips" I read when googling this procedure. Dr. Lotsu and his team have made what is usually described as one of the most unpleasant screening procedures as professional and as "good" as it could possibly be. The procedure itself is definitely not pleasant - but I'm certain that developing and/or fighting cancer would be 1000x worse.... The most discomfort I felt was from having to go a day without eating and I was so freakin' hungry. The prep wasn't even bad - the taste was fine. The exorcism of the demons wasn't that bad either - I was expecting an intestinal terrorist attack, but it really wasn't horrible and it was over in an hour. Dr. Lotsu personally called me with the results later in the day and explained everything to me. He is very professional but also very personable. If I have anything un-positive to say or any suggestions for improvement, it would be that I expected to be 5 pounds lighter this morning, and the weight loss was only 1.4.... and that pillow was super comfortable - I could have slept for another hour or two. Maybe next time - ?

Dr. Kamel is an expert who is focused on patient health. He is available and responsive, hugely…read moreimportant in moments of UC stress. His approach is practical and doable. I have been with him for many years and he is light years better than my last Gastro doctor. Go here, you won't regret it.

Dr. Kamel is an excellent GI doctor, he listens to you and answers questions. He is very patient…read moreoriented, and considerate. He explains everything that is needed for the patient to know. Very helpful with my prescriptions over the years when my insurance denied payment. I really appreciate him.

I am beyond blessed that Dr. Adajar came into my life. I have never had a doctor be so caring and…read moreresponsive; he took the time to get to know me and listen to my concerns and worries leading up to and after surgery. Should I end up needing further surgery down the road - I will look no farther than Dr. Adajar. I highly would recommend him to any friend or family member. Thank you for the 100th time Dr. Adajar for being so amazing. I appreciate you.

I first contacted Dr Osipova in late 2017 to consult about recurring hernia issues. She was…read morefantastic during my consult, answering all of my questions, drawing pictures, etc. Dr Osipova suggested I also meet with her partner for a second opinion, Dr. Adajar, who has a different perspective on how to treat hernias. So I made an appointment and did as she advised. Drs Osipova and Adajar were just as fantastic during that consult. I determined I was not going to go forward with surgery right now, but would work on some lifestyle issues to see if that would help. I had blood drawn and Dr Adajar let me know numbers and his recommendations based on my numbers. And then it went downhill. I talked with Dr. Adajar's assistant Michelle, and felt like I was being sold a used car. She wouldn't let me talk, and was just throwing out price tags for consultations that needed to take place, weight loss medicine and vitamins and hormones I needed to buy, etc. When I would try to talk, she wouldn't hear me and I finally just asked her to have Dr. Adajar call me so I could understand what this Xsculpt work was that he does, and talk through what would be the best course of action for me to take next. That request to talk to him was made over a month ago, and I haven't heard from him. I even texted him on his cell, since he used that form of communication with me after my blood test results were in. I got no response. The experience started out great, but then turned into something I didn't understand. And I am left with a bill to pay for the bloodwork and no course of action to take that you usually work out with a medical professional. I wanted to let others know about my experience here so they could take it into account if they decided to visit this office.

I had an amazing experience with Dr. Arturo Olivera and his entire team. From my first consultation…read moreto the day of my colonoscopy, the quality of care was exceptional. Everyone from the front desk staff to the nurse, the anesthesiologist, and of course Dr. Olivera--was incredibly kind, professional, and explained every step of the procedure clearly, both before and after. I'm truly grateful and impressed by their dedication and outstanding patient care. Highly recommend!

I visited Arturo Olivera for an endoscopy few years before . His behavior and lack of…read moreprofessionalism left a lasting negative impression. He did not meet with me before or after the procedure to explain what he planned to do or to discuss the results. After I woke up from anesthesia, I waited for a very long time while nurses repeatedly reminded him that I was waiting. Instead of checking on me, he continued chatting outside the room for more than half hour -- about unrelated, non-medical topics. When he finally came in, he only spoke briefly and said he would let me know the results. I never received any follow-up from him or his office. Even when my other specialists later requested the endoscopy report, they received nothing. Recently, another gastroenterologist confirmed that no procedure notes or findings were ever documented from him! This experience shows a serious lack of professionalism, communication, and patient respect. It's unacceptable that a physician could act with such disregard for care and responsibility!