1610 Des Peres Road,
Suite 150
St Louis, MO 63131

(314) 492-4100

Online Appointment Requests

Please call office for procedure requests.

Robert McMahon, MD
Board Certified Gastroenterologist
(314) 492-4100
Closed to New Patients at this time.
Practice Limited to Outpatient Procedures.

Dr Robert McMahon is Board Certified by the American Board of Internal Medicine in Gastroenterology.  He is a MD graduate of Washington University School of Medicine in St Louis and completed internship and residency there (Barnes-Jewish Hospital). 

After completing his Gastroenterology Fellowship at University of Arkansas for Medical Sciences in Little Rock, he remained in private practice in Little Rock for several years before returning to St Louis.  He has continuously practiced gastroenterology in St Louis since then.  He is past President of the St Louis Metropolitan Medical Society and a Fellow of the American College of Gastroenterology (FACG).

Dr. McMahon brings convenience and compassion to patients for their colonoscopy and endoscopy. Virtually all insurance plans and Medicare are accepted.  Dr. McMahon has privileges at several hospitals and surgery centers.

Dr. McMahon is  committed to providing the highest quality care and personal attention based on experience and education.  We strive for promptness, courtesy and convenience.

What is a gastroenterologist?   It makes a difference!
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