Skip to main content Skip to navigation
We care about your privacy. Read about your rights and how we protect your data. Get Details


Education & Training

  • Fellowship, Psychiatry & Neurology, Neurology with Special Qualifications in Child Neurology, 1999
    Walter Reed National Military Medical Center
  • Residency, Pediatrics, 1994
    Walter Reed National Military Medical Center
  • Internship, Pediatrics, 1992
    Walter Reed National Military Medical Center
  • MD, 1991
    Loyola University Medical Center
  • BS, 1987
    Providence College

Board Certifications

  • American Board of Pediatrics
  • American Board of Psychiatry & Neurology-Child Neurology
  • American Board of Psychiatry & Neurology-Epilepsy

Awards & Recognition

  • Top Doctors Washingtonian (2022, 2021, 2020)

National Provider ID: 1972556462


Marc DiFazio, M.D., is the Vice President of Ambulatory Services at Children’s National Hospital. He completed his pediatric and neurology training at Walter Reed Army Medical Center, and went on to become the Chief of Child Neurology at Walter Reed, where he served on active duty until 2005 before transitioning to private practice in Rockville, MD.

Dr. DiFazio is well-known in the metropolitan area pediatric community for his service, leadership and expertise in clinical child Neurology, with interests and concentration in the areas of Tourette syndrome, headache/migraine, concussion, behavioral neurology/autism and the use of botulinum toxin in a variety of conditions. His leadership activities at Children’s National now include his service as the incumbent Medical Executive Staff President. He continues to serve in the Army Reserves as Command Surgeon of Legal Command, USARC.

Research & Publications

4.6 / 5 4.6 out of 5 stars (based on 44 Patient/Family Ratings)

About Our Patient Satisfaction Scores

The main Patient Rating score is an average of all responses to care provider-related questions on our nationally-recognized Press Ganey Patient Satisfaction Survey.

The ratings below are the average of specific questions about interactions with the care provider.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

  • 4.5 / 5

    Care Provider explanations of prob/condition

  • 4.6 / 5

    Likelihood of recommending Care Provider