Leslie is a Palliative Care Nurse Practitioner at Massachusetts General Hospital’s Cancer Center. She completed her palliative care training with the Harvard Interprofessional Palliative Care Fellowship in 2019. Prior to her fellowship, she worked for a non-profit hospice agency as a palliative care nurse practitioner shortly after graduating with her Master of Science degree at the University of Massachusetts Lowell. Prior to this, she was a registered nurse at Massachusetts General Hospital on Ellison 16, a medical oncology floor for five years.

She has volunteered for a medical mission brigade providing primary care to those in rural villages in Juticalpa, Honduras. She actively serves at her father's church in Jamaica Plain, MA.