This week, the ratings of 5 Health Care Providers & Services stocks on Portfolio Grader are down. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

DaVita HealthCare Partners Inc. (DVA) earns a D this week, moving down from last week’s grade of C. DaVita HealthCare Partners Inc. operates kidney dialysis centers in the United States. For more information, get Portfolio Grader’s complete analysis of DVA stock.

Patterson Companies, Inc. (PDCO) declines this week from a C to a D. Patterson Companies, Inc. distributes dental products, veterinary supplies for companion pets, and rehabilitation supplies. For more information, get Portfolio Grader’s complete analysis of PDCO stock.

Slipping from a C to a D rating, Team Health Holdings, Inc. (TMH) takes a hit this week. Team Health Holdings, Inc. offers healthcare professionals outsourcing services. For more information, get Portfolio Grader’s complete analysis of TMH stock.

HealthSouth Corporation (HLS) gets weaker ratings this week as last week’s C drops to a D. HealthSouth Corporation provides inpatient rehabilitative healthcare services. The company also gets F’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of HLS stock.

Community Health Systems, Inc. (CYH) experiences a ratings drop this week, going from last week’s D to a F. Community Health Systems, Inc. provides healthcare services through hospitals that it owns and operates in the United States. The company also gets F’s in earnings surprise and earnings momentum. For more information, get Portfolio Grader’s complete analysis of CYH 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.