Tiffani Thiessen

as Dr. Kayla Martin

Vincent Spano

as Troy Whitlock

French Stewart

as Dr. Carl Ratner

Bob Gunton

as Dr. Max Sorkosky

Bruce Boxleitner

as Kenneth Friedlander

Michael Massee

as Edward Vicente

Clyde Kusatsu

as Dr. Kenji Ito

Robert Curtis Brown

as Jack Hendler

Renée Taylor

as Kathryn Hadorn

Tamlyn Tomita

as Melissa Lo