One hundred sixty-four health care providers in a health maintenance organization were surveyed in 1996 regarding their knowledge of, attitudes toward, and perception of barriers regarding emergency contraceptive pills (ECPs), as well as their ECP prescribing practices. Providers reported primarily positive attitudes regarding ECPs. Only 42% reported having ever prescribed ECPs; those who had prescribed had more positive attitudes about ECPs. Knowledge of ECP provision was incomplete, with 40% believing treatment had to be initiated in 48 hours or less. Barriers identified by providers included lack of a dedicated product, lack of awareness of ECPs among providers, and liability issues.