Reminder: Starting Dec. 1 2017, members may have a new Oxford Health Plan identification (ID) card and number. As members are given new ID numbers, the website you use for secure transactions will change from to website will be listed on the back of the member's new ID card. If you're unable to confirm the member's eligibility on, please use the UnitedHealthcare Provider Portal. To access the UnitedHealthcare Provider Portal, please sign in to and click the Sign In button in the top right corner.