Can a motion to dismiss an action for delay be appealed?

In Armstrong v. McCall, supra, the plaintiff sued doctors for malpractice. The action was commenced during the month of August 1998. On March 7, 2003, the physicians brought a motion to dismiss action for delay. It was denied by the judge. On September 23, 2003, a second motion to dismiss the action for delay was brought. It, too, was dismissed. A motion seeking leave to appeal the decision in the second motion also failed. On August 2, 2005, a third motion to dismiss the action of the plaintiffs for delay was argued. It was granted. The action was dismissed.