Five health care provider stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

Magellan Health Services, Inc.’s (MGLN) grade is moving up to a B (“buy”) this week from last week’s C (“hold”). Magellan Health Services coordinates and manages the delivery of behavioral healthcare treatment services. In Portfolio Grader’s specific subcategories of Earnings Surprise and Cash Flow, MGLN also gets A’s. Ater posting three straight days of falling prices, the stock price is now $56.56. Shares of the stock have been trading at an exceptionally rapid pace, up fourfold from the week prior. For more information, get Portfolio Grader’s complete analysis of MGLN stock.

RadNet, Inc. (RDNT) is progressing from last week’s rating of B (“buy”) as the company improves to an A (“strong buy”) this week. RadNet owns and operates outpatient diagnostic imaging centers. The stock price has risen 59.7% over the past month, better than the 1.3% decrease the Nasdaq has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of RDNT stock.

Amedisys, Inc. (AMED) improves from a C to a B rating this week. Amedisys provides home health care and hospice services in the United States. After three days of declining prices, the stock price is now at $14.50. Shares of the stock have been changing hands at an unusually rapid pace, up 630.4% from the week prior. For more information, get Portfolio Grader’s complete analysis of AMED stock.

This week, Concord Medical Services Holding Ltd. ADR’s (CCM) ratings are up from a B last week to an A. Concord Medical Services operates a network of radiotherapy and diagnostic imaging centers in the People’’s Republic of China. For more information, get Portfolio Grader’s complete analysis of CCM stock.

This week, Cardinal Health, Inc. (CAH) pushes up from a B to an A rating. Cardinal Health provides products and services related to the safety and productivity of healthcare. For more information, get Portfolio Grader’s complete analysis of CAH 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.