The department of health and senior services shall establish a toll-free telephone number for the use of parents to access information about health care providers and practitioners who provide health care services under the maternal and child health block grant and the medical assistance program and about other relevant health care providers, as required by 42 U.S.C. § 705(a)(5)(E). Unless otherwise prohibited by federal law or regulation, the cost of establishing and maintaining the cost of the toll-free telephone number, including the cost of personnel to operate or support it, shall be appropriated from the federal maternal and child health block grant. The MO HealthNet division of the department of social services shall provide the department of health and senior services with information it has otherwise compiled concerning health care providers who participate in the medical assistance program. The department of health and senior services shall coordinate the operation of the toll-free telephone numbers operated by the department so as to minimize duplication of administrative expense.