Those that live on-campus have the option of living in either Cornell owned housing (Lasdon, Olin Hall, & Livingston-Farrand) or Sloan-Kettering owned housing (Sloan House and 303 East 71st).
Cornell owned housing contact information
420 East 70th Street, Suite 2S (In Lasdon House, 2nd floor)
Phone: (212) 746-1001
Fax: (212) 746-8876
E-mail: housing@med.cornell.edu
http://www.med.cornell.edu/housing
Housing placement: contact Cornell housing office
Sloan-Kettering Institute (SKI) owned housing contact information
SKI Housing: 212-639-7696
SKI Housing Emergency: 212-639-7887
Housing placement: contact Assistant Dean Francoise Freyre
You can change rooms and roommates if you there is a major conflict or problem. Contact the appropriate housing office for more information on the process.