The following positions set forth in this section shall be exempt from Chapter 59 of this title:
(1) Secretary of Health and Social Services;
(2) Director of Public Health;
(3) Director of the Division of Substance Abuse and Mental Health;
(4) Director of Social Services;
(5) Chief of Business Administration and General Services;
(6) Chief of Planning, Research and Evaluation;
(7) Director of Developmental Disabilities Services;
(8) Director of Child Support Services;
(9) Director of the Division of Services for Aging and Adults with Physical Disabilities;
(10) Director of State Service Centers;
(11) Director of Long-Term Care Resident Protection; and
(12) Deputy Secretary of the Department of Health and Social Services.