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.
Wonderful Dr. explains everything to you. Very considerate. Could not be happier.
(5 days ago)
Jun-2026
Dr. Stier is a friendly professional.
He is a visibly caring person.
I enjoyed my visit.
(1 week ago)
May-2026
Dr. Stier is my third doctor at RGA in the past forty years and they are sll fantastic.
(3 weeks ago)
May-2026
Was referred to Dr. Stier by my family physician. I was very pleased to finally find a Doctor Who could find out what my issue was. Dr. himself and staff were outstanding. The nurses and doctor explained everything before and after my procedure. The office also called me the day after my procedure to see how I was doing and again went over my aftercare paperwork. I rate this facility, top-notch thank you to the doctor and the staff at this facility.
(3 weeks ago)
May-2026
Good bedside manner, knowledgeable and reassuring.
(1 month ago)
May-2026
An amazing Dr. that genuinely cares about the patient!!
(1 month ago)
May-2026
Dr. Stier is an exceptional gastroenterologist who combines high-level clinical expertise with a truly compassionate bedside manner. From the initial consultation through follow-up, he took the time to explain everything clearly and answer all my questions. His professional staff and efficient office made the entire process seamless. I felt genuinely cared for and confident in my treatment plan. I highly recommend Dr. Stier to anyone seeking top-tier GI care!
(1 month ago)
Apr-2026
Explained everything well. Also knew my history.
(2 months ago)
Apr-2026
Pleasantly explained procedure and processes. Put me at ease with his calm and caring demeanor. Listened and solved a issue I had with getting another procedure done.
(2 months ago)
Apr-2026
Friendly, answered all questions.
(2 months ago)
Apr-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.
Wonderful Dr. explains everything to you. Very considerate. Could not be happier.
Dr. Stier is a friendly professional. He is a visibly caring person. I enjoyed my visit.
Dr. Stier is my third doctor at RGA in the past forty years and they are sll fantastic.
Was referred to Dr. Stier by my family physician. I was very pleased to finally find a Doctor Who could find out what my issue was. Dr. himself and staff were outstanding. The nurses and doctor explained everything before and after my procedure. The office also called me the day after my procedure to see how I was doing and again went over my aftercare paperwork. I rate this facility, top-notch thank you to the doctor and the staff at this facility.
Good bedside manner, knowledgeable and reassuring.
An amazing Dr. that genuinely cares about the patient!!
Dr. Stier is an exceptional gastroenterologist who combines high-level clinical expertise with a truly compassionate bedside manner. From the initial consultation through follow-up, he took the time to explain everything clearly and answer all my questions. His professional staff and efficient office made the entire process seamless. I felt genuinely cared for and confident in my treatment plan. I highly recommend Dr. Stier to anyone seeking top-tier GI care!
Explained everything well. Also knew my history.
Pleasantly explained procedure and processes. Put me at ease with his calm and caring demeanor. Listened and solved a issue I had with getting another procedure done.
Friendly, answered all questions.