NASHVILLE, Tenn. & PITTSBURGH--(BUSINESS WIRE)--naviHealth and Gateway Health have entered into a definitive agreement whereby naviHealth will manage certain post-acute care services for Gateway Health’s Medicare Advantage members in Pennsylvania. The program will leverage naviHealth’s unique decision support technology, post-acute analytics platform and network of field-based clinicians to drive higher quality care at a lower cost for Gateway Health members following their discharge from the h