Miss. Code Ann. 73-25-38(3)
Liability: Special Volunteer Medical License
A physician with a special volunteer medical license who, voluntarily and without compensation, provides medical services will not be held legally responsible. They can be held legally responsible if acting with extreme carelessness or intent to cause harm.
Immunity from liability for physicians, physician assistants or certified nurse practitioners providing charitable medical care or voluntarily providing health services without fee while assisting with emergency management or operations in an emergency
(3) Any physician who voluntarily renders any medical service under a special volunteer medical license authorized under Section 73-25-18 without any payment or compensation or the expectation or promise of any payment or compensation shall be immune from liability for any civil action arising out of any act or omission resulting from the rendering of the medical service unless the act or omission was the result of the physician's gross negligence or willful misconduct. In order for the immunity under this subsection to apply, there must be a written or oral agreement for the physician to provide a voluntary noncompensated medical service before the rendering of the service by the physician.