目標：本研究旨在探討耳鼻喉科開業醫師個人開業能力、診所特性、執業環境與其服務量之關係。方法：以中央健康保險局特約之耳鼻喉科診所629家負責人為對象，問卷資料採用二次郵寄，回收率為37.5 %，服務量資料來自中央健康保險局85年10月至86年9月之門診申報檔。結果：發現醫師基本特質、開業術、診所特性、及執業環境皆與醫師之服務量有關。在醫學中心接受住院醫師訓練、未當過科主任、解釋病情詳細、認知上不將擅用類固醇當做開業術的醫師其服務量愈高。在鄉鎮地區開業者、開業地點在7-ELEVEN超商或百貨公司附近者門診量較高。結論：研究結果可作為 醫師規劃投入開業市場之參考，亦可鼓勵醫師至鄉鎮開業。

　　　　　Objectives: This study evaluates ENT practitioners in terms of the relationship between practitioner's ability, characteristic and environment of clinics, and service volume. Methods: The subjects of this study were 629 owner of ENT clinics contracting with the National Health Insurance (NHI) bureau. Questionnaires were mailed twice to collect basic data, with a response rate of 37.5%. The service volume data was from the out-patient-claimed file provided by NHI. Results: The service volume was related to physicians' personal characteristics, practicing ability, as well as the characteristic and environment of clinics. The service volume provided by those trained as residents in medical centers were higher than those trained in regional hospitals. The service volume was also higher for those who had never been the chief of an ENT department in a hospital, explained the symptoms in detail and prescribed fewer steroids to patients. Clinics with more physicians and auxiliary personnel had higher service volume . The service volume in a rural town was higher than in an urban area. Also, clinics close to convenience stores and department stores (within 5 minutes walk) had higher service volume. Conclusions: This study can be a reference for the physicians who are planning to start their clinics, also encouraging them to practice in rural towns.