Heywood Healthcare in Gardner is replacing the CEO who has led the hospital system for 12 years, citing the changing healthcare landscape and the need to continue meeting its community's goals. Win Brown, president and CEO at Heywood, will be replaced in his role by co-CEOs, according to a Tuesday press release from Heywood. Rozanna Penney, current vice president of patient care services, chief nursing officer, and chief operating officer, and executive director of Heywood Medical Group, as well as Tom Sullivan, current vice president of financial services, will share in the top leadership role.