Learn how it's Safe@Inova

Get the facts on how we're ensuring safety at our locations, our PPE safety requirements, and more, so you know it's safe to receive the care you need—as well as safe for us to continue delivering your care. Whether your visit is for routine care, emergency care, or COVID-19 care, you have a nationally recognized leader in safety, ready for you. See temporary restricted visitation policy and COVID-19 vaccine update.

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Find A Doctor

Jennifer B O'Neil, MD

Board Certified Specialty: Pediatric Cardiology, Pediatrics

Years of Experience: 16

Gender: Female
Languages: English

Physician Group

Pediatrix Medical Group of the MidAtlantic PC

Child Cardiology Associates - Fairfax

Child Cardiology Associates - Rockville

Child Cardiology Associates - Waldorf

For office hours, insurances accepted, or other information call the office location.

Hospital Affiliations

  • Inova Alexandria Hospital
  • Inova Fairfax Hospital
  • Inova Fair Oaks Hospital
  • Inova Loudoun Hospital


Medical Education:
  • Wright State University Boonshoft School of Medicine 2005

  • Childrens National Medical Center Pediatric ( ) 7/1/2005-7/1/2006

  • Childrens National Medical Center Pediatric ( ) 7/1/2006-7/1/2008

  • Children`s Healthcare of Atlanta at Egleston Pediatric Cardiology ( ) 7/1/2008-6/30/2011

Board Certification:
  • Pediatric Cardiology
  • Pediatrics

Inova Physician Referral Service

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.