Dr Marion was born and raised in Dublin, Ireland. She attended medical school at Trinity College and began her pediatric training in Ireland before following her American husband to the Bay Area in 2010.
She completed her pediatric residency at the Children’s Hospital in Oakland and did a one year pediatric pulmonary fellowship at UCSF. In addition to her training in Ireland and the US, she also spent a year as a pediatric resident in Australia. After fellowship, she joined a private practice in the East Bay, where she worked for four years before joining Tamalpais Pediatrics
She lives in Tiburon with her husband and three children. She enjoys hiking the local trails and cooking.