Original Medicare with Social Security still won't cover dental, vision, hearing aids, prescriptions, physicals, or long-term care.

Americans are concerned about the possibility of changes to the retirement system and Social Security, according to a new survey.

You should also know that if you're a higher earner, you may be subject to a Medicare surcharge known as an income-related monthly adjustment amount. If so, you could see a large chunk of your Social Security check get whittled down each month.