Webaccess your optumserve electronic funds transfer (eft) account online. Enter your username and password or click on the links to reset them if you forgot them. Webfind phone, email and address information for optum serve client portal support. If you are new to. Webmyoptumserve. com is a secure online portal for accessing your health information and benefits. To create an account, you need to provide your last name and date of birth,. Websign in to access the optumserve client portal, where you can manage your account, view claims, and more…