Dr. Robert McMahon, MD

Dr. Robert McMahon, MD

Gastroenterology  ·  
Male  ·  
Age 69
Dr. Robert McMahon, MD is a gastroenterology specialist in Saint Louis, MO and has been practicing for 23 years. He graduated from Washington University St Louis in 1989 and specializes in gastroenterology.

5139 Mattis Rd Ste 101

Saint Louis, MO 63128

Contact Information

(314) 492-4100

Insurance Accepted

  • Aetna
  • Anthem Blue Cross Blue Shield
  • Blue Cross Blue Shield
  • Cigna
  • Coventry Health Care
  • First Health (Coventry Health Care)
  • Humana
  • Molina Healthcare
  • MultiPlan
  • UnitedHealthCare

*Please verify this information when scheduling an appointment.

Learn about Dr. McMahon

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Top Care Areas

See how frequently Dr. McMahon performs your care needs compared to other doctors.

Abdominal Disorders
more than 68% of peers
more than 64% of peers
Esophageal Diseases
more than 62% of peers

Dr. McMahon's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

Care Philosophy

This content was provided by Dr. McMahon "Dr. Robert McMahon and staff provide Gastroenterology service in St. Louis with commitment to highest quality care and personal attention based on experience and education. We strive for promptness and availability. www.MYCOLONOSCOPY.com"

1  Specialties

  • Gastroenterology

2  Board Certifications

  • Gastroenterology
    Accredited by: American Board of Medical Specialties*
  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

54  Conditions Treated

Read Less

11  Procedures

Background Check

Malpractice Claims not available

Healthgrades does not collect malpractice information for Missouri.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • UCSD
    Undergraduate School | Graduated
  • Washington University St Louis
    Medical School | Graduated 1989
  • Washington University
    Internship Hospital | Completed 1990
  • Washington University Jewish Hospital
    Residency Hospital | Completed 1992
  • University Ark For Med Scis
    Fellowship Hospital | Completed 1995

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. McMahon has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. McMahon does not have any memberships or affiliations listed. If you are Dr. McMahon and would like to add memberships or affiliations, please update your profile.

Dr. McMahon's Reviews

Likelihood to recommend Dr. McMahon


Based on 9 reviews

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Average Wait Time
  • 10 – 15 minutes
Dr. McMahon's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
What People Say About Dr. Robert McMahon, MD
RecentHighestLowestMost Helpful
Dr. McMahon is distinguished by his genuine compassion and attentiveness to this patient. I found him considerate, reassuring, meticulous with the utmost of professionalism. I would highly recommend his skilled and conscientious approach to colonoscopy.
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Office is unorganized, difficult to get someone to answer phone or return calls, and frequently experienced miscommunications which resulted in my leaving.
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