Marianne is a pediatrician assigned at the Child Protection Unit and a fellow of the Ambulatory Pediatrics at Philippine General Hospital. In 2014, up to the present, she is the Project Coordinator of KULAY, an organization that provides art and other activities to children in need of medical care, specifically cancer patients. She is also an advocate of pediatric palliative care. Hence, in 2018 she joined TRF as a visiting HCP Physician.