In addition to its responsibilities for complaints regarding services provided by long-term care facilities pursuant to the Older Americans Act, 42 U.S.C. § 3001 et seq., as amended, the Office of the State Long-Term Care Ombudsman shall investigate complaints regarding services provided by (i) licensed adult day centers as defined in § 63.2-100, (ii) home care organizations as defined in § 32.1-162.7, (iii) hospice facilities as defined in § 32.1-162.1, (iv) providers as defined in § 37.2-403, (v) state hospitals operated by the Department of Behavioral Health and Developmental Services, and (vi) an area agency on aging or any private nonprofit or proprietary agency providing services. Nothing in this section shall affect the services provided by local departments of social services pursuant to § 63.2-1605.