This week, five Health Care Provider stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

Select Medical Holdings (NYSE:SEM) is boosting its rating from a B (“buy”) to an A (“strong buy”) this week. Select Medical Holdings is an operator of specialty hospitals and outpatient rehabilitation clinics. In Portfolio Grader’s specific subcategories of Earnings Momentum and Cash Flow, SEM also gets A’s. The stock’s price has soared 12.3% over the past month, better than the 1.2% increase the S&P 500 has seen over the same time. For more information, get Portfolio Grader’s complete analysis of SEM stock.

Lincare Holdings (NASDAQ:LNCR) earns an A this week, jumping up from last week’s grade of B. Lincare Holdings provides oxygen and other respiratory therapy services to patients in the home. Shares of LNCR have jumped 64.1% over the past thirty days. For more information, get Portfolio Grader’s complete analysis of LNCR stock.

The rating of McKesson (NYSE:MCK) moves up this week, rising from a B to an A. McKesson distributes pharmaceuticals, medical-surgical supplies, and health and beauty care products throughout North America. MCK is up 2.4% from a month ago. For more information, get Portfolio Grader’s complete analysis of MCK stock.

Molina Healthcare(NYSE:MOH) rating increases to a B (“buy”) this week from last week’s C (“hold”). Molina Healthcare is a multi-state managed care organization that participates in government-sponsored health care programs such as Medicaid and the Children’s Health Insurance Program. Shares of MOH have increased 16.9% over the past month. For more information, get Portfolio Grader’s complete analysis of MOH stock.

This is a strong week for Henry Schein (NASDAQ:HSIC). The company’s rating climbs to B from the previous week’s C. Henry Schein distributes healthcare products and services, including practice management software, to office-based healthcare practitioners. For more information, get Portfolio Grader’s complete analysis of HSIC 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.