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8110 Gatehouse Road, Falls Church, VA 22042


Jennifer B O'Neil, MD

A member of Inova Medical Group
The doctors of Inova Medical Group are Inova’s premier primary care and specialty physicians, offering top-notch medical expertise, full access to Inova facilities, and the convenience of integrated electronic medical records.
Jennifer O'Neil, MD


Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Pediatric Cardiology, Pediatrics

Years of Experience





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About Jennifer O'Neil, MD

Dr. Jennifer B. O'Neil completed her undergraduate education in biology at Pennsylvania State University and earned her medical degree at Wright State Boonshoft School of Medicine in Dayton, OH. She then completed pediatric residency training at Children's National Medical Center prior to completing a pediatric cardiology fellowship at Emory University/Children's Healthcare of Atlanta. She started practicing pediatric cardiology in Virginia and Maryland in 2011.

Her clinical interests include fetal cardiology, outpatient management of complex congenital heart disease and preventive care. She serves as the Associate Director of Inova Fairfax Hospital’s single ventricle program. Dr. O'Neil also is actively involved with resident education at Inova Fairfax Hospital and has faculty appointment at the University of Virginia School of Medicine, participating in medical student education.

In her free time, Dr. O'Neil enjoys exercising, biking, cooking, watching movies, and exploring the outdoors and Washington, DC, area with her husband and two girls.


  • Top Doctors, Washingtonian, 2022


Medical Education

Wright State University Boonshoft School of Medicine 2005


Childrens National Medical Center
Training Specialty: Pediatric
07/01/2005 - 07/01/2006


Childrens National Medical Center
Training Specialty: Pediatric
07/01/2006 - 07/01/2008


Children`s Healthcare of Atlanta at Egleston
Training Specialty: Pediatric Cardiology
07/01/2008 - 06/30/2011

Board Certification

Pediatric Cardiology, Pediatrics

Hospital Affiliation

Patient Reviews

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Inova Physician Referral Services

Please make note of the following information.

This referral service is sponsored by Inova. Only physicians with appropriate medical staff privileges at an Inova affiliated hospital may participate. There is no charge or fee to you or for the participating physician for our service. Physician participation is voluntary.

Physician referrals will be based on your referral needs and preferences of location, specialty, and rotation availability of the physician.

The physicians on our referral panel are independent practitioners or physician employees. The independent practitioners are not employees, agents or representatives of Inova and are solely responsible for their provision of medical care to you.