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”).

Universal American (UAM) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. Universal American is a life and accident and health insurance holding company. In Portfolio Grader’s specific subcategory of Earnings Momentum, UAM also gets an A. For more information, get Portfolio Grader’s complete analysis of UAM stock.

This week, Humana (HUM) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. Humana is a benefits solutions company that offers an array of health and supplemental benefit products for employer groups, government benefit programs and individuals. For more information, get Portfolio Grader’s complete analysis of HUM stock.

Anthem, Inc. (ANTM) boosts its rating from a B to an A this week. For more information, get Portfolio Grader’s complete analysis of ANTM stock.

HealthSouth Corporation (HLS) improves from a C to a B rating this week. HealthSouth provides inpatient rehabilitative healthcare services. For more information, get Portfolio Grader’s complete analysis of HLS stock.

This week, AmerisourceBergen Corporation’s (ABC) ratings are up from a B last week to an A. AmerisourceBergen is a pharmaceutical services company that offers drug distribution and related services to healthcare providers and pharmaceutical manufacturers. For more information, get Portfolio Grader’s complete analysis of ABC 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.