(a) This Act does not limit rights, privileges, or immunities provided to volunteer health practitioners by laws other than this Act. Except as otherwise provided in subsection (b), this Act does not affect requirements for the use of health practitioners pursuant to the Emergency Management Assistance Compact.
     (b) The Illinois Emergency Management Agency, pursuant to any mutual aid compacts entered into by this State, may incorporate into the emergency forces of this State volunteer health practitioners who are not officers or employees of this State, a political subdivision of this State, or a municipality or other local government within this State.