The grades of three Health Care Provider stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

HCA Holdings (NYSE:HCA) is progressing from last week’s rating of B (“buy”) as the company improves to an A (“strong buy”) this week. 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 price has risen 5.5% over the past month, better than the 4.1% increase the S&P 500 has seen over the same period of time. The stock’s trailing PE Ratio is 4.5. For more information, get Portfolio Grader’s complete analysis of HCA stock.

AMERIGROUP (NYSE:AGP) boosts its rating from a B to an A this week. 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. Shares of the company have remained flat from a month ago. 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. Wall Street has pushed the stock higher by 23.2% over the past month. 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.