New Search Marc Paul Difazio M.D. (301) 765-5400 Department Pediatrics Specialty Pediatric Neurology Primary Office Address: Childrens National Medical Center 9850 Key West Ave Rockville, MD 20850 Phone: (301) 765-5400 Recommend this Physician Get Directions Education Medical School - Loyola University Chicago Stritch School of Medicine Residency - Walter Reed Army Medical Center Fellowship - Walter Reed Army Medical Center Board Certifications American Board of Pediatrics American Board of Psychiatry & Neurology