UserInfo.FirstName
UserInfo.Profile.FirstName
UserInfo.Profile.MiddleName
UserInfo.Profile.LastName
UserInfo.Profile.Street
UserInfo.Profile.City
UserInfo.Profile.Country
UserInfo.Profile.PostalCode
UserInfo.Profile.TelePhone
UserInfo.Profile.Mobile
UserInfo.Profile.Fax
...
also you can get profile data according to dnn user id
userid=2;
UserController con = new UserController();
UserInfo userinfo = con.GetUser(PortalId, userid);