Denzel Washington does not appear in this episode.
The name change in this episode was prompted by a real company (Ecumeneca) complaining about their name being used on St. Elsewhere. The producers solved this in typical St. E fashion by having the Ecumeneca sign crash to the ground. The replacement name, Weigert, was used again many years later when they became the HMO for Oswald State Pen. on "Oz".