You can make a one-time payment without having to Sign In or Register first.  If you haven't Sign In yet, click on the Make a Quick Payment button in the top-right corner of the website.  You'll need your Account Number, which you can find on your Statement.

Already Signed In?  You can make a one-time payment by using the Make a Payment drop-down menu.

Due to an issue between American Express and our online payment provider, HMS is currently unable to accept payments through American Express.  Thank you for your patience while our payment provider works to correct this issue.