The agency must not require a separate application for Medicaid from an individual, if--
(a) The individual receives AFDC; or
(b) The agency has an agreement with the Social Security Administration (SSA) under section 1634 of the Act for determining Medicaid eligibility; and--
(1) The individual receives SSI;
(2) The individual receives a mandatory State supplement under either a federally-administered or State-administered program; or
(3) The individual receives an optional State supplement and the agency provides Medicaid to beneficiaries of optional supplements under Sec. 435.230.