The grades of 4 Health Care Providers & Services stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Ensign Group, Inc. (ENSG) earns a B this week, jumping up from last week’s grade of C. Ensign Group, Inc. operates facilities offering nursing and rehabilitative care services in multiple states. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of ENSG stock.

The rating of Civitas Solutions, Inc. (CIVI) moves up this week, rising from a C to a B. The company also gets A’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of CIVI stock.

Digirad Corporation (DRAD) is seeing ratings go up from a B last week to a A this week. Digirad Corporation engages in the development and manufacture of medical diagnostic imaging systems for nuclear cardiology and general nuclear medicine applications primarily in the United States. The company also gets A’s in operating margin growth, earnings growth, earnings surprise, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of DRAD stock.

Nobilis Health Corp. (HLTH) gets a higher grade this week, advancing from a C last week to a B. The company also gets A’s in sales growth, earnings growth, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of HLTH 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.