Section 16B. There shall be a division of medical assistance within the executive office of health and human services. Such division shall be in the charge of a commissioner who shall be known as the commissioner of medical assistance. The commissioner of medical assistance shall administer the provisions of chapter one hundred and eighteen E. Any agency within the executive office of health and human services engaging in any activity or implementing any policy involving the delivery of services reimbursable under chapter one hundred and eighteen E, certification or licensure of providers of services under such chapter, or identification of individuals eligible for medical assistance under such chapter, shall seek review by the commissioner of medical assistance prior to engaging in any such activity or implementing any such policy. This section shall not apply to chapter 118E medical care and assistance, other than acute care services as defined by the secretary of health and human services, to eligible persons aged 65 and over as those services shall be administered by the secretary of elder affairs pursuant to section 1 of chapter 19A.