This week, three Health Care Provider stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

This week, HCA Holdings (NYSE:HCA) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). HCA Holdings operates acute care hospitals, outpatient facilities, clinics and other patient care delivery settings. In Portfolio Grader’s specific subcategories of Earnings Growth, Cash Flow, and Margin Growth, HCA also gets A’s. The stock has a trailing PE Ratio of 5.20. For more information, get Portfolio Grader’s complete analysis of HCA stock.

This week, Amerigroup‘s (NYSE:AGP) ratings are up from a B last week to a A. Amerigroup focuses on serving people, who receive healthcare benefits through publicly funded health care programs, including Medicaid, Children’s Health Insurance Program (CHIP), Medicaid expansion programs, and Medicare Advantage. For more information, get Portfolio Grader’s complete analysis of AGP stock.

AMN Healthcare (NYSE:AHS) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. AMN Healthcare recruits nurses, physicians, and other healthcare professionals for temporary or permanent positions in healthcare facilities in the United States. For more information, get Portfolio Grader’s complete analysis of AHS stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.