• Season 1 Episode 9
  • Who's Zoomin' Who?

  • Airdate:22.05.2005.

An outbreak of a sexually transmitted disease affects several members of the hospital staff, prompting Chief Webber to call a meeting. Meanwhile, the chief reluctantly confides to Dr. (Derek) Shepherd about his own medical concerns; Izzie and Cristina are worried by a patient's wife and daughter who are at odds over his care; Burke treats Bill, a college buddy whose medical diagnosis raises some questions regarding his wife's actions; and, just as Meredith and Derek grow more intimate, a bombshell is dropped 


series regulars:

    Ellen Pompeo as Meredith Grey
    Patrick Dempsey as Derek Shepherd
    Sandra Oh as Cristina Yang
    Isaiah Washington as Preston Burke
    Katherine Heigl as Isobel "Izzie" Stevens
    Justin Chambers as Alex Karev
    T.R. Knight as George O'Malley
    Chandra Wilson as Miranda Bailey
    James Pickens, Jr. as Richard Webber.

guest cast:

    Kate Walsh as Addison
    Lauren Bowles as Alice Franklin
    Wayne Wilderson as Bill Adams
    Wendy Davis as Holly Adams.