A survey from Nationwide Financial showed that close to 50 percent of retiring Americans noted concern for their healthcare costs in old age, even if they saved for retirement.

The survey, which was compiled by Harris Interactive, found that 45 percent anticipate healthcare costs becoming their most significant expense during retirement. In addition, close to 40 percent of those who have at least $250,000 saved said that they have not spoken to a financial advisor. However, only 20 percent of those who have spoken to a financial advisor mentioned healthcare costs that aren't covered by government-funded plans.

"Americans - even those who have diligently saved for their golden years - are not prepared for the reality of healthcare costs in retirement and don't really understand how Medicare works," said John Carter, president of Nationwide Financial Distributors.

Those consumers who are heading for retirement may want to ensure they have a sufficient healthcare policy. Those who aren't confident in their current plan could benefit from comparing a group of health insurance quotes. This may help them secure a policy that includes affordable health insurance rates while providing the coverage they are looking for.