A person who investigates complaints and mediates fair settlements, especially between aggrieved parties, such as consumers, and an institution or organization.
(in England) an official responsible to Parliament and appointed to protect the interests of patients in relation to administration of and provision of health care by the *National Health Service. He or she can investigate complaints about the NHS when they cannot be resolved locally. In Scotland, and in Wales, this role is undertaken by a Public Services Ombudsman.... parliamentary and health service ombudsman
Health Encyclopedia