Brentwood-based post-acute care manager naviHealth is in full-on expansion mode and has added two C-suite positions to help steer the company's human resources and compliance work. 

Former Express Scripts executive Dorie Ramey has been appointed to the newly created position chief human resources officer, where she will be responsible for boosting productivity and performance. With more than 20 years of experience in HR and health care, she was most recently CHRO at Atlanta-based Cotiviti, a health care finance company, for about a year and a half. Before that, she led the Atlanta office for HR consulting firm Mercer.