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. Hartford HealthCare is one of the largest, non-profit, fully-integrated healthcare systems providing patient care in the state, allowing our providers to care for their patients no matter where they reside in Connecticut.