Dr. John Barnard is a pediatric gastroenterologist in Columbus, OH who specializes in treating digestive disorders in children (such as irritable bowel syndrome).


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Videos of Dr. Barnard
Dr. Barnard

John Barnard, MD, on the expansion of The Research Institute at Nationwide Children's Hospital  

Office of Dr. Barnard
of Dr. Barnard


Nationwide Children's Hospital - Gastroenterology  


Please Note: This link will direct you to a third-party website unaffiliated with MD.com (https://www.nationwidechildrens.org/gd/applications/controller.cfm?&page=11371), where you're able to request or schedule an appointment online with Dr. John Barnard.

Accepting New Patients?

Yes, Dr. John A. Barnard is accepting new patients at this office.


700 Children's Drive, Columbus, OH 43205

Office Hours

  Open Lunch Close
Mon 12:00 - 1:00 pm
Tue 12:00 - 1:00 pm
Wed 12:00 - 1:00 pm
Thu 12:00 - 1:00 pm
Fri 12:00 - 1:00 pm

Office Details

Doctor Specialty Pediatric Gastroenterology
Accepting New Patients? Yes
Practice Specialty Pediatric Gastroenterology
Practice Ownership Nationwide Children's Hospital
Hospital Affiliation
  • Nationwide Children's Hospital
Languages Spoken English

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Insurance Accepted  

No insurance accepted.

About Dr. Barnard
Dr. Barnard



Dr. John Barnard graduated from University of Mississippi School of Medicine in 1980 before completing a residency in Pediatrics at Vanderbilt University Medical Center in 1983. He then completed a fellowship in Pediatric Gastroenterology & Nutrition at Vanderbilt University School of Medicine in 1986.

Dr. Barnard has one office in Ohio where he specializes in Pediatric Gastroenterology.

Dr. Barnard works with one doctor, Dr. Carlo Di Lorenzo.


Special Interests  

  • Pediatric Gastroenterology & Hepatology & Nutrition

Education & Training  

Medical School


  • Vanderbilt University Medical Center
    Residency in Pediatrics • 1983


  • Vanderbilt University School of Medicine
    Fellowship in Pediatric Gastroenterology & Nutrition • 1986


Languages Spoken  

  • English
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