Providence St. Joseph Medical Center in Burbank has received top scores for its cardiac, orthopedic, stroke care and critical care services from an industry watchdog group. HealthGrades, a company that ranks the level of care among health providers, placed the hospital in the top 5 percent in the nation for women’s care and top 10 percent fro maternity and stroke care. It was also ranked the best in the San Fernando Valley for heart surgery.