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Patient Reviews

At GI Alliance of Illinois, we are a physician-led practice with a patient-centric focus, meaning you will always be our top priority. We know how important it is to feel comfortable with your provider and to know that you are cared about every step of the way. When choosing a provider, it is important to find one that is not only knowledgeable about your GI condition but one that can provide you with the support you need. Our practice is known across the state because of our top rated gastroenterologists and staff. We would love for you to browse through the reviews below from past and present patients who have been right where you are so that you can make the most informed decision when choosing a GI provider. Once you have read the reviews, reach out to a GI Alliance of Illinois location near you— we would love a chance to connect with you and find out how we can help you achieve better GI health.

5.0 Review from G.C. Source: Google Aug 10 2022

"Dr. Penn was professional, easy to understand, kind, and answered all my questions."

5.0 Review from V.M. Source: Google Jul 12 2022

"I put off having a colonoscopy for years ,afraid of the whole procedure,when I arrived there for it ,the staff ,nurses and most of all Dr Penn was so kind ,they were all so Profesional I was never left alone and everything was explained to me in detail before they did it ,thank you Dr Penn ❤️ 💙"

5.0 Review from D.N. Source: Google Apr 21 2022

"Excellent Physician. Mixes his personality and his professionalism toward one goal, making his Patients feel comfortable during the whole process."

5.0 Review from S.S. Source: Google Apr 15 2022

"Dr. Penn is always so nice and listens to me. His staff all very nice. But I got cancelled three times and rescheduled way out. But I got to see him and will continue been going to him many years."

5.0 Review from P.M. Source: Google Mar 29 2022

"Wonderful treatment God bless them all"

4.0 Review from T.S. Source: Google Mar 01 2022

"I did not see the doctor after my procedure and was told he would come talk to me."

5.0 Review from J.S. Source: Google Jan 14 2022

"Dr. Penn was great. He explained things very well."

5.0 Review from D.S. Source: Google Jan 13 2022

"My 31 special needs daughter went to him ; he was extremely courteous, respectful, and so kind to her and comforting. I love his attitude, he made both her and myself laugh ! Need to be more like him !"

5.0 Review from M.M. Source: Google Dec 18 2021

"DR.PENN IS AWESOME! Wont find better!! Staff is great too!"

5.0 Review from M.B. Source: Google Dec 08 2021

"Dr Penn and his staff are wonderful. They are always caring. They take time to answer questions, etc. I highly recommend Dr Penn and his staff."

5.0 Review from K.S. Source: Google Dec 02 2021

"My experience with Dr. Penn was great. He is kind and caring, explains everything, and answers all questions. I would recommend him to friends and family."

5.0 Review from G.Y. Source: Google Dec 02 2021

"Dr. Penn and all of his staff did a wonderful job during my visit, and had the concern of the patient in mind as their number one priority."

5.0 Review from M.B. Source: Google Nov 10 2021

"Dr. Penn is a great Doctor ,straight to the point, wonderful sense of humor. Can put your mind at ease before a procedure and you understand the situation after all is said and done.Thank You Doctor Donald Penn Jr."

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

"Dr. Penn does an excellent job. He always explains things so you can understand. After my procedure, he came in to explain how it went and said “no cancer” twice to put my mind at ease. I really appreciate that. I would give him an A-plus plus. Carol Shaver"

5.0 Review from J.L. Source: Google Oct 30 2021

"Dr Penn is the best! He has years of experience and is conscientious. His sense of humor puts you at ease as well."

5.0 Review from M.A. Source: Google Oct 29 2021

"Great job. My 2nd. All the people are true professional s."

5.0 Review from G.M. Source: Google Jul 28 2021

"Dr. Blumenstein is an experienced and caring physician. I appreciate how he talks to you and not at you. He explains what he feels is the best procedures to help you heal and get better. He cares about his patients and I feel that he does whatever it takes, to help them get back to a healthy lifestyle. Sincerely, George J. McDonald Jr."

5.0 Review from P.H. Source: Google Jul 04 2021

"Dr Penn was very professional, and I would highly recommend him."

5.0 Review from B.W. Source: Google Jul 03 2021

"Great doctor and staff"

5.0 Review from J.B. Source: Google Jul 02 2021

"Dr. Penn is a doctor who is very personable. Very good personality to be a doctor and has a sense of humor. He has done all my colonoscopies. Wouldn't go to anyone else."

5.0 Review from K.O. Source: Google Jun 19 2021

"Excellent Doctor!"

5.0 Review from N.L. Source: Google Jun 18 2021

"I found the doctor and all the staff most helpful, informative, and quite friendly. I could not have been more pleased."

5.0 Review from K.B. Source: Google Jun 13 2021

"Dr Penn has always treated me with concern and respect. He is always ready to listen to what I have to say. I have great respect for Dr Penn and am glad he is my doctor. He has always went above and beyond what I could ask for. I would recommend him to anyone that needs gastroenterology care."

5.0 Review from V.S. Source: Google Jun 13 2021

"Dr. Penn is an awesome Dr. I have been going to him for over 30 yrs. Very knowledgeable in his field. Saved my sons life when he was in college. Forever grateful"

5.0 Review from D.W. Source: Google Jun 12 2021

"He has been my Doctor for several years and I love his honest approach. He is funny and a fast talker but he will make sure you understand everything that he is saying. He puts it in words you understand. I only wished he was a doctor that could treat me for everything because I love and trust him that much. He will get to the bottom of your problem and fix it for you. I can not say enough about him and his entire staff."

5.0 Review from D.S. Source: Google May 25 2021

"The colonoscopy procedure from checkin to discharge was professional, caring and informative about the care being given and the proceedure."

5.0 Review from P.S. Source: Google Apr 29 2021

"Perfect! Very prompt and professional."

5.0 Review from J.B. Source: Google Apr 11 2021

"My endoscopy procedure was done professionally and results were given the same day. I thoroughly trust Dr. Penn to perform any procedure that might be necessary in my health care."

5.0 Review from J.H. Source: Google Mar 11 2021

"The experience was very simple. No pain or discomfort."

5.0 Review from A.B. Source: Google Mar 11 2021

"I highly recommend this specialist anyone with stomach issues I bring my elderly Mother to him and his staff he is a very friendly warm hearted person an excellent doctor I am very grateful for him and his staff being a part of my Mother's health care provider team him and his staff have been doing an incredible job with my Mother and her health issues my family and I are very grateful for them and appreciate him and his staff more than words can say many Thanks to you Mr Donald E Penn and staff your all doing an absolutely fantastic job"

5.0 Review from D.F. Source: Google Mar 11 2021

"Every visit over the years, with Dr. Penn goes very smooth and easy. His explanations are simple and down to earth, easy to understand. Always answers your questions directly. Great personality and bedside manner. I would recommend him to everyone."

5.0 Review from T.F. Source: Google Feb 24 2021

"Explained everything to me pre and post. Everything went well."

5.0 Review from M.J. Source: Google Feb 22 2021

"As before, everyone at Central Illinois Endoscopy Center was fantastic! Dr. Penn was very welcoming and upbeat both before and after my procedure. The anesthesia they used was great, and I was clear headed enough immediately after to remember everything he told me. I would highly recommend Dr. Penn if you are in need of a colonoscopy."

5.0 Review from E.D. Source: Google Feb 22 2021

"I have been a patient of Dr. Penns for 33 year's. I wouldn't go to anyone else So Penn if you retire before I die I'm screwed! Love ya like an Uncle ;)"

5.0 Review from J.P. Source: Google Nov 21 2020

"Dr. Rosenberg Jr. is the best! I've been going to IGG for many years. I could not function with my gastro issues and after many tests and procedures, Dr Rosenberg found a solution for me that works great!"

5.0 Review from D.G. Source: Google Oct 13 2020

"Nurses were awesome. Dr Penn is compassionate and caring. He answered all my questions. I would highly recommend him and his staff."

5.0 Review from W.C. Source: Google Oct 13 2020

"Dr. Penn is very helpful, friendly and knowledgeable. 👍"

5.0 Review from E.D. Source: Google Oct 13 2020

"I have been a patient of Dr. Penns since 1988 unfortunately I'm a complicated patient and lord knows he gets so hard to help. Love him to death. You couldn't ask for a better gastroenterologist."

5.0 Review from N.A. Source: Google Oct 13 2020

"Very good experience. Dr. Penn explained and treated/solved my issues after gallbladder surgery. Very happy w/ his treatment and explanations."

5.0 Review from R.S. Source: Google Oct 13 2020

"Dr Penn is very nice, answers questions, and very knowledgeable. I would highly recommend him."

5.0 Review from K.D. Source: Google Jun 07 2019

"Dr. Penn is a highly skilled physician. I would recommend his service to everyone. My colonostophy procedure was smooth, painfree and the entire staff was wonderful. I never would of put this procedure off for 4 years, if I knew it was so simple & no big deal."

5.0 Review from L.K. Source: Google Apr 30 2019

"All encounters with staff friendly and professional! Thank you Dr Penn."

5.0 Review from R.A. Source: Google Apr 07 2016

"Dr Donald e Penn greatest Dr ever I recommend him to family And friendless"

5.0 Review from I.P. Source: Google Feb 27 2015

"Very knowledgeable. A little fast paced but if you ask, he'll spend all the time in the world with you"

5.0 Review from S.“. Source: Google Aug 01 2014

"I have had 2 major surgeries by Dr. Penn. Both successful and I would highly recommend him. He is easy to talk to and knows his stuff."