This study aims to elucidate the development of and current situation in group practice, to explore factors that prevent primary care physicians from attending group practice, and to suggest incentives to improve such attendance. The potential subjects in this study are primary care physicians. The sample consists of 9,336 primary care physicians. Questionnaires were distributed by mail. After data were collected, descriptive statistical analyses addressing frequency, percentage, mean, and standard deviation were performed on all identified variables. Multiple discriminant regression analysis was also conducted to explore the relationship between independent variables and dependent variables. The overwhelming majority of respondents (62% )were willing to attend group practice Multiple logistic regression analysis revealed that the willingness of physicians to attend group practice was significantly related to satisfaction with the current work situation, perception of whether primary care was shrinking, a low successful rate of the group practice, unstable income, the physician、age, whether the clinic was located in central Taiwan、and whether the physician had a specialist certificate. Suggestions are made to educate primary care physicians about group practices; amend the regulations related to group practices; increase the allowed number of laboratory tests, outpatient surgeries, and drugs used in primary care.