Dr. Matthew W. Stier, M.D. is a board certified gastroenterologist and joined Rockford Gastroenterology Associates, Ltd. in 2019. He completed his undergraduate studies in pharmaceutical science at Purdue University and graduated with honors from the University of Illinois College of Medicine at Chicago. Dr. Stier went on to complete his residency in Internal Medicine and fellowship in Gastroenterology, Hepatology & Nutrition at the University of Chicago, where he also served as chief fellow from 2017-2018.
Dr. Matthew W. Stier, M.D. is a board certified gastroenterologist and joined Rockford Gastroenterology Associates, Ltd. in 2019. He completed his undergraduate studies in pharmaceutical science at Purdue University and graduated with honors from the University of Illinois College of Medicine at Chicago. Dr. Stier went on to complete his residency in Internal Medicine and fellowship in Gastroenterology, Hepatology & Nutrition at the University of Chicago, where he also served as chief fellow from 2017-2018.
The reviews listed below were collected independently of Rockford Gastroenterology Associates through rater8. Each review represents an authentic and verified patient experience.
My husband and I thought he was very professional and caring.
(1 week ago)
Aug-2026
Was friendly and informative explained indetail what he was going to do.
(2 weeks ago)
Aug-2026
He was very nice and polite
(1 month ago)
Jul-2026
Dr Stier is a great doctor and he's very helpful and thorough. I hate to see him leaving the practice and moving on but those things happen.
(1 month ago)
Jul-2026
I had a great experience with Dr. Stier and the whole staff. They were very friendly and professional.
(1 month ago)
Jul-2026
Since this should really be done I must say & honestly believe that this place, receptionist's,and the whole entire team there in every position there is from beginning to end made you feel welcomed concerned caring very helpful polite answered all questions explained what they were doing with everything to keep you calm knew you were in good hands even while you were out. Dr and anthesteologest were awesome. Next day called me at 8am to follow up bout procedure and ask bout any questions or concerns. They were perfect who all did perfect. Ty all very very much.
(1 month ago)
Jul-2026
Super friendly and reassuring.
(1 month ago)
Jul-2026
Very nice and professional!!
(1 month ago)
Jul-2026
He was very nice at talking me through he procedure. I don't remember the procedure because I was asleep. Procedure took about 20-30 minutes. I was pleased with everything.
(1 month ago)
Jul-2026
Very nice and explained everything so I could understand.
(1 month ago)
Jul-2026
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Rockford Gastroenterology Associates
401 Roxbury Road Rockford, IL 61107
Dr. Matthew W. Stier, M.D. is a board certified gastroenterologist and joined Rockford Gastroenterology Associates, Ltd. in 2019. He completed his undergraduate studies in pharmaceutical science at Purdue University and graduated with honors from the University of Illinois College of Medicine at Chicago. Dr. Stier went on to complete his residency in Internal Medicine and fellowship in Gastroenterology, Hepatology & Nutrition at the University of Chicago, where he also served as chief fellow from 2017-2018.
During fellowship training Dr. Stier participated in clinical research on the endoscopic management of Barrett’s esophagus and advanced polypectomy techniques, which he presented at regional and national scientific meetings. He has authored numerous peer-reviewed publications and continues to be committed to advancing the care of all patients. Dr. Stier is a member of the American Gastroenterological Association, the American College of Gastroenterology, the American Association for the Study of Liver Diseases, and the American Society for Gastrointestinal Endoscopy.
Dr. Stier is also board certified in Internal Medicine. He is an active member of the medical staff at UW Health Rockford Hospital and OSF St. Anthony Medical Center.
Although Dr. Stier is well trained in the broad disciplines of gastroenterology, hepatology and clinical nutrition, he has special interests in Barrett’s esophagus, improving quality in colorectal cancer screening, liver disease including hepatitis C, and the management of inflammatory bowel disease.
My husband and I thought he was very professional and caring.
Was friendly and informative explained indetail what he was going to do.
He was very nice and polite
Dr Stier is a great doctor and he's very helpful and thorough. I hate to see him leaving the practice and moving on but those things happen.
I had a great experience with Dr. Stier and the whole staff. They were very friendly and professional.
Since this should really be done I must say & honestly believe that this place, receptionist's,and the whole entire team there in every position there is from beginning to end made you feel welcomed concerned caring very helpful polite answered all questions explained what they were doing with everything to keep you calm knew you were in good hands even while you were out. Dr and anthesteologest were awesome. Next day called me at 8am to follow up bout procedure and ask bout any questions or concerns. They were perfect who all did perfect. Ty all very very much.
Super friendly and reassuring.
Very nice and professional!!
He was very nice at talking me through he procedure. I don't remember the procedure because I was asleep. Procedure took about 20-30 minutes. I was pleased with everything.
Very nice and explained everything so I could understand.