(1) You, when you attend medical examinations upon request in connection with disability determinations; these are medical examinations requested by the State agency or by us when additional medical evidence is necessary to make a disability determination (also referred to as consultative examinations, see § 416.917);

(2) You, your representative (see § 416.1505 (a) and (b)), and all unsubpoenaed witnesses we or the State agency determines to be reasonably necessary who attend disability hearings; and

(3) You, your representative, and all unsubpoenaed witnesses we determine to be reasonably necessary who attend hearings on any claim for SSI benefits before an administrative law judge.