Any aged, blind, or disabled individual who would be eligible for assistance under this chapter or Chapter 4 (commencing with Section 12500), except for his excess income, and who receives services under this article, shall be eligible for Medi-Cal benefits as a categorically needy recipient under Section 14005.1, provided that his nonexempt income in excess of the sum in the applicable subdivision of Section 12200 is used toward the purchase of such services.