SSM Health Medical Group
Ruben Aymerich, MD
Gastroenterology

SSM Health Medical Group
1011 Bowles Ave., Suite 205 Fenton, MO 63026
Ruben Aymerich, MD, board certified in gastroenterology, has been in practice in the St. Louis area for the past 10 years.
As an advocate for colon cancer awareness, Dr. Aymerich emphasizes the importance of early detection and living a healthy lifestyle. "Through appropriate screenings, colon cancer can be prevented," explains Dr. Aymerich. As a cycling enthusiast and triathlete, he emphasizes the importance of staying active. "I tell my patients to live a healthy lifestyle, listen to your body, and ask your doctor if you need help."
Dr. Aymerich specializes in the diagnosis and treatment of gastrointestinal diseases, such as reflux, celiac disease, Crohn's disease and ulcerative colitis. He is well trained to perform a variety of tests, including Infrared Coagulation - for treatment of hemorrhoids, upper endoscopy, colonoscopy, and ERCPs. He is a member of the American College of Gastroenterology.
He completed his gastroenterology fellowship training and residency training at Barnes-Jewish Hospital. He received his medical degree from the University of Puerto Rico School of Medicine.
As an advocate for colon cancer awareness, Dr. Aymerich emphasizes the importance of early detection and living a healthy lifestyle. "Through appropriate screenings, colon cancer can be prevented," explains Dr. Aymerich. As a cycling enthusiast and triathlete, he emphasizes the importance of staying active. "I tell my patients to live a healthy lifestyle, listen to your body, and ask your doctor if you need help."
Dr. Aymerich specializes in the diagnosis and treatment of gastrointestinal diseases, such as reflux, celiac disease, Crohn's disease and ulcerative colitis. He is well trained to perform a variety of tests, including Infrared Coagulation - for treatment of hemorrhoids, upper endoscopy, colonoscopy, and ERCPs. He is a member of the American College of Gastroenterology.
He completed his gastroenterology fellowship training and residency training at Barnes-Jewish Hospital. He received his medical degree from the University of Puerto Rico School of Medicine.
About Me
Specialties
Gastroenterology
Gender
Male
Languages
Spanish
Education
Washington University - Barnes-Jewish Hospital
Residency, 1999
University of Puerto Rico Health Sciences
Medical School, 1996
Washington University - Barnes-Jewish Hospital
Fellowship, 2002
Hospital Affiliations
SSM Health St. Clare Hospital - Fenton
SSM Health St. Mary's Hospital - St. Louis
Certifications
American Board of Internal Medicine/Gastroenterology
Drug Enforcement Administration
Missouri Dept of Health/Narcotics&Dangerous Drugs
Missouri State Board of Registration
Medical Interests
Celiac disease
ERCP Endoscopic retrograde cholangiopancreatography
GERD Gastroesophageal reflux disease
Ulcerative colitis
Upper endoscopy
Reviews
Rating Breakdown
Reviews are measured on a scale of 1 to 5, with 5 being the best score.
Question Breakdown
4.9Overall Experience4.9Listened Carefully4.9Explained Things Clearly4.8Knew Medical History4.9Involved in Care Decisions4.9Showed Courtesy & Respect
Patient Reviews
SSM Health only displays patient satisfaction data for providers included in our survey process and who have a minimum of 30 returned surveys. The overall rating is an average of all responses to the survey questions listed below. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy. Learn more about our survey.
4.9 out of 5
75 ratings,
28 reviews
6/3/2026
He has been so helpful in our care!
5/13/2026
He’s kind and knowledgable.
5/13/2026
He's awesome
5/11/2026
Grea doctor! He has a lot of knowledge and experience not only about his medical field but about other medical fields as well. He responds promptly in My Chart and he is very professional and nice.
5/6/2026
Very knowledgeable. Very patient. Explains everything so it is very understandable..
Map & Directions
SSM Health Medical Group
1011 Bowles Ave., Suite 205 Fenton, MO 63026
Mon
8:30 am - 4:00 pm
Tue
8:30 am - 4:00 pm
Wed
8:30 am - 4:00 pm
Thu
8:30 am - 4:00 pm
Fri
8:30 am - 4:00 pm
Sat
Closed
Sun
Closed
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