[영문]BACKGROUND:: Heavy alcohol use is associated with health costs and medical problems. There has been a growing consensus that primary care patients should be screened for alcohol problems. OBJECTIVES:: We examined rates at which patients were asked about alcohol or drug use and problems, extending research in this area by using a standardized problem drinking instrument with a large national sample, examining community level variables, and assessing the extent to which patients who were identified received follow-up. SUBJECTS:: A subsample of 7371 persons from the 1998 Healthcare for Communities survey who reported visiting a general medical provider (GMP) in the past year. MEASURES:: Participants completed questionnaires on demographics, mental and physical health, alcohol, drug use and problems, enrollment in a managed health care plan, whether their medical provider asked about alcohol or drug use, and whether they received advice, counseling, or referral. RESULTS:: Being asked about alcohol and drug use was associated with being male, young, highly educated, more health problems, mental health diagnosis, and being classified as a problem drinker. Only 48% of problem drinkers received any follow-up, with most being told to “stop drinking” by their GMP. CONCLUSIONS:: Few people are queried about alcohol or drug use when they visit a GMP. When problem use is identified, most patients do not receive appropriate follow-up and aftercare. The quality of primary care could improve if GMPs were educated about providing brief advice/counseling and were given information concerning resources in their community to make appropriate referrals for patients.