The Thai government has emphasized the development of services within the medical tourism sector. This study aimed to examine the design of medical tourism services in hospitals with a focus on enhancing human resource development in this field. A mixed-methods approach was employed, including interviews with 15 specialists and executives, and a survey of 250 respondents. The findings identified 21 underlying variables, which were categorized into three main factors: tourism services, medical services, and support services. Notably, the analysis highlighted that the most critical variables were related to Support, Tourism, and Medical services (STM). The study suggests that the design of tourism services should be carefully tailored to meet the specific needs of medical tourists. In conclusion, aligning medical tourism service design with human resource development strategies can contribute to the sustainable growth of Thailand’s medical tourism industry.