You can access your account number either by calling Admin America during business hours at (770) 992-5959 or anytime through Admin America's online consumer portal. You can access the portal at https://adminamerica.lh1ondemand.com/Login.aspx?ReturnUrl=%2f.
Once you are logged into your account, from the home page hover over the "Accounts" option. Then select the "Account Summary" option.
The account number can be accessed via the "View" option on the right side of the page (on the same line where "Health Savings Account" is listed on the left.