Sexual Assault Nurse Examiners Act of 1999 - Amends the Public Health Service Act to include within certain demonstration projects regarding interpersonal violence within families and among acquaintances projects in which, on a 24-hour basis and with respect to victims of sexual assault and such violence who present at hospital emergency rooms and other sites offering victims' services, nurses and other trained health professionals: (1) identify victims of such violence; (2) collect physical evidence that may be of use in judicial proceedings regarding the violence; and (3) provide counseling on such violence and appropriate referrals. Requires the Secretary of Health and Human Services to carry out a program to train nurses and other health care professionals to provide such services.

Applies this Act to existing demonstration projects.