The National Committee on Quality Assurance (NCQA) rated 1,012 private/commercial, Medicare and Medicaid plans as part of the NCQA Health Insurance Plan Ratings 2016-2017. 

105 (10%) received a top rating of 4.5 or 5.0 out of 5. A comparably small number, 27 (3%), earned the lowest ratings of 1.0 to 2.0.

See all Health Insurance Plan Ratings at this link:  http://healthinsuranceratings.ncqa.org/2016/Default.aspx.