Colleen has held the position of Nurse Practitioner in the Red Blood Cell Disorders Clinic at Toronto General Hospital for the last 10 years. Throughout her career, Colleen has held many nursing roles including educator, nurse manager, and now a nurse practitioner. She worked many years in oncology and palliative care before changing specialties. In addition to her clinic assessments and telephone triage role, her other focus has been on transitioning patients from the Hospital for Sick Children as well as leading various other projects within the program including immunizations for asplenia.