Anyone have experience consolidating student loans through a credit union?

The interest rates from fedloan and salliemae are between 6.5% and 9.25% and I feel like there's got to be a way to get a lower rate. I've got pretty good credit and am in the housing market as a first time buyer. Since the fedloan separates the loans into several different categories, it's showing that I have debt owed to several places. My lender seems to think it would help me to consolidate these payments.

Thanks in advance.