Dr. Meghan O’Neill is a 2002 graduate of Dowling High School. While at Dowling, she lettered in basketball, track, cross-country, and softball and was active in the Dowling Special Olympics chapter. She was the valedictorian of the class of 2002 and ultimately went on to attend the University of Notre Dame where she double-majored in science pre-professional studies and psychology. Thanks to her AP credits from Dowling, she graduated in a semester early with Magna Cum Laude honors and was inducted into the Phi Beta Kappa Academic Honor Society as well as the Alpha Epsilon Delta Pre-Medical Honor Society. She was also awarded the Patrick J. Niland, MD Award, recognizing excellence in academics, service, and integrity by a senior science pre-professional major at the University of Notre Dame.
Dr. O’Neill then attended the Johns Hopkins School of Medicine in Baltimore, Maryland from 2006 through 2010. She was inducted into the Alpha Omega Alpha Honors Medical Society, graduating in the top 10th percentile of her class. Following medical school, she moved to Chicago and completed a three-year pediatric residency at Northwestern McGaw - Lurie Children’s Hospital of Chicago and then moved back to Baltimore where she completed a combined residency-fellowship program in Neurodevelopmental Disabilities at the Johns Hopkins Hospital System and the Kennedy Krieger Institute, one of the world’s top medical establishments for children with disabilities. Upon completion of her fellowship, Dr. O’Neill returned to Chicago in late 2017 and currently works as an attending physician in both the division of Developmental-Behavioral Pediatrics and the division of Child Neurology at Lurie Children’s Hospital of Chicago. She is an assistant professor of pediatrics at the Northwestern Feinberg School of Medicine and is triple board certified in General Pediatrics, Neurology with Special Qualification in Child Neurology, and Neurodevelopmental Disabilities. Dr. O’Neill established the Lurie Children’s Down Syndrome clinic which has been responsible for the care of hundreds of children since its inception. Dr. O’Neill also specializes in the care of children with autism, developmental delays, intellectual disability, ADHD, learning disabilities, cerebral palsy, and complex neurogenetic syndromes. She leads the Northwestern developmental pediatrics clinical rotation for general pediatrics residents and has been involved in educating hundreds of fellows, residents, and medical students since the start of her career, with an emphasis on teaching about disability-related principles and promoting clinical learning experiences in medical training to improve overall care for children and adults with disabilities. She is involved in numerous Down syndrome-related research projects and national workgroups, has authored several articles and medical textbook chapters on disability related topics, and has given local, regional, and national talks on these subjects. She was selected to the American Academy of Neurology Palatucci Advocacy Leadership Forum given her interest in disability-related advocacy issues.
Dr. O’Neill resides in the Irving Park neighborhood in Chicago with her husband Nick Guzmán, who works as a government and regulatory affairs attorney and partner at the firm of Faegre Drinker and serves the Chicago community through his work with many pro bono immigration cases, as the board president for a large non-profit center for immigrant and low-income families in Chicago, as a Trustee to the National Museum of Mexican Art, and as a mayoral appointee to the Illinois Medical District Commission which oversees the largest and most diverse urban medical district in the United States. The couple has three children – Sofia (6 years), Gabriela (4 years), and Sam (almost 2 years). During her free time, Dr. O’Neill enjoys attending professional sporting events, attempting DIY home decorating, solidifying her place as one of Target’s most loyal customers of all time, and above all, being a human and dog mom.