Before the opening credits are even over, when Eddie and Quincy are exiting the Coroner's (Ford) station wagon at the industrial area where the work accident occurred, the front license plate can be seen reading [E]999853, which is the same as the license plate on most of the Coroner's (AMC Matador) station wagons used in prior seasons.
Allen Fawcett is Kenny Kelso. I'd guess then Paul Rudd must be the doctor.
There would have been no reason to call a Coroner out to an industrial accident, as there were no fatalities.