Donna Vivino until Feb 2013 (s/b for Elphaba, Jackie Burns got super sick and missed her last shows), then Willemjin Verkaik, Alli Mauzey, Kyle Dean Massey, Randy Danson, F. MIchael Haynie (?), Catherine Charlebois, Adam Grupper, not sure about Dillamond.
Jackie Burns was supposed to be Elphaba, but was very sick and ended up missing the last few weeks of her run. Her last performance was unexpectedly in the January.
Donna Vivino was the standby and did most of the performances until February 10. Then Willemijn Verkaik joined the company as Elphaba. Alli Mauzey was Glinda through all of this.
Rest of the cast:
Kyle Dean Massey (Fiyero), F. Michael Haynie (Boq), Catherine Charlebois (Nessa), Randy Danson (Morrible), Tom Flynn (Dillamond), Adam Grupper (Wizard)