Hartford HealthCare supports Nurse Practitioners and Physician Assistants in practice: Dedicated support and voice for our for Nurse Practitioners and Physician Assistants through the Office of Advanced Practice directed by Sarah Clark, MBA, MHS, PA-C, BSN, RN, System Director of Advanced Practice. Committed to continuous development through The Center for Education Stimulation & Innovation (CESI), our Provider Leadership Development Institute and a robust on demand learning platform including CME, special courses, learning series and tools and resources.