Tomonaga Naika Clinic, located in Omura City, Nagasaki Prefecture, is a community-based medical facility that opened in 1988 after changing its name from 'Asanaga Clinic.' The clinic specializes in internal medicine, respiratory medicine, gastroenterology, and rehabilitation, addressing a wide range of healthcare needs. A distinctive feature of this facility is the establishment of a Lifestyle Disease Prevention Center in 2007. The clinic practices medicine that does not rely solely on medication, placing emphasis on preventive healthcare. Operating hours are weekdays from 9:00 AM to 12:30 PM and 2:00 PM to 6:00 PM, with home visits on Wednesdays and Thursdays from 3:30 PM to 5:00 PM, and Saturday morning appointments available. The facility has 30 parking spaces and is wheelchair accessible, creating an environment easily accessible for elderly patients and those with mobility needs. English-language support is available. As a clinic that also functions as a disease prevention and exercise therapy facility, Tomonaga Naika Clinic serves as a core provider of community healthcare, offering comprehensive care from prevention to treatment.