The Secretary of the Department of Health and Social Services, hereafter referred to as the Secretary, shall appoint a Renal Disease Advisory Committee, hereafter referred to as the Committee, to consult with the Secretary in the administration of this subchapter. The Committee shall be composed of 11 persons representing hospitals and medical centers which establish dialysis centers, voluntary agencies interested in kidney diseases, related public agencies, physicians licensed to practice medicine and the general public. Each member shall hold office for a term of 4 years and until a successor is appointed and qualified, except that the terms of the members first taking office shall expire, as designated at the time of appointment, 2 at the end of the first year, 3 at the end of the second year, 3 at the end of the third year and 3 at the end of the fourth year, after the date of appointment. Any person appointed to fill a vacancy occurring prior to the expiration of the term for which such person's predecessor was appointed shall be appointed for the remainder of such term. The Committee shall meet as frequently as the Secretary deems necessary, but not less than once each year. The Committee members shall receive no compensation, but shall be reimbursed for actual expenses incurred in carrying out their duties as members of this Committee.