This week, the ratings of 4 Health Care Providers & Services stocks on Portfolio Grader are down. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

MEDNAX, Inc. (MD) slips from a C to a D this week. MEDNAX, Inc. provides physician management services to hospital-based neonatal, maternal-fetal, pediatric cardiology, and pediatric intensive care specialties. For more information, get Portfolio Grader’s complete analysis of MD 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. For more information, get Portfolio Grader’s complete analysis of HLS stock.

Slipping from a C to a D rating, Addus HomeCare Corporation (ADUS) takes a hit this week. Addus HomeCare Corporation provides a range of social and medical services to individuals in the home. For more information, get Portfolio Grader’s complete analysis of ADUS stock.

AdCare Health Systems, Inc. (ADK) experiences a ratings drop this week, going from last week’s D to a F. AdCare Health Systems, Inc. is a developer, owner and manager of retirement communities, assisted living facilities, skilled nursing facilities and home health care services in the state of Ohio. The company also gets F’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of ADK 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.