Seventy-seven of 247 (31.2%) Hawaii obstetricians completed a questionnaire about newborn metabolic screening (NBMS). Only 13.0% correctly answered the knowledge questions, and 81.8% reported that they did not discuss NBMS with patients. Of the minority of obstetricians who discuss NBMS, only 25.0% correctly answered the knowledge questions. The study results revealed that obstetricians need to receive appropriate NBMS education and be encouraged to discuss NBMS with their patients.