Third Party Administrator According to the According to the Third Party Administrator Act, MCL 550.902(2)(k), , a Third Party Administrator (TPA) is defined
as:
a person who processes claims pursuant to a service contract
and who may also provide 1 or more administrative services
pursuant to a service contract, other than under a worker's
compensation self-insurance program pursuant to Section 611
of the worker's disability compensation act of 1969,
Act. No. 317 of the Public Acts of 1969, being Section 418.611
of the Michigan Compiled Laws. Third party administrator does
not include a carrier or employer sponsoring a plan.