Market segmentation is one of the strategies to understand the target market that can be controlled by the hospital so that the hospital can design the right program to maximize the health services provided to patients. This study aims to analyze hospital market segmentation based on the demographic, geographic, and behavioral characteristics of patients. This study used a descriptive survey approach involving 155 outpatients at Royal Prima Medan Hospital. Data were collected using a questionnaire consisting of closed-ended questions. Data were analyzed by calculating the proportion of patient characteristics to obtain a market segmentation picture. The results of the analysis show that majority of patients who utilize health services are female, 31-40 years old, married, college educated, work as private employees and earn between Rp. 2,500,000 to Rp. 5,000,000 per month. Majority of respondents spent less than Rp. 500,000 per month on healthcare and were from Medan City. Majority of patients take more than 60 minutes of travel time and travel more than 15 km to reach hospital. Majority of respondents showed a loyal attitude and stated that they would choose the hospital if they needed to seek treatment again and recommend health services at the hospital to others Keyword: Segmentation Demographic Geographic patient behavioral hospital This open access article is under the CC-BY-SA license. Kata kunci: Segmentasi Demografis Geografis perilaku pasien rumah sakit