Okada Clinic is an internal medicine clinic located in Jikrokuma, Kumagaya City, Saitama Prefecture. With an English-speaking environment, parking facilities, and barrier-free accessibility, it provides a welcoming space for diverse visitors. The clinic offers pre-employment health checkups, specialized health screenings, and occupational health services. A notable feature is same-day gastroscopy appointments without prior reservation. Preventive medicine is a strong focus, with vaccinations including pneumococcal for seniors, influenza, COVID-19, travel vaccines, tetanus, hepatitis A and B, Japanese encephalitis, HPV vaccine, and routine childhood immunizations. Comprehensive health screenings are available, including specific health checks, longevity screenings, and screenings for colorectal cancer, hepatitis, prostate cancer, tuberculosis, and stomach cancer. Long-term care insurance services include physician assessments, home nursing, and home care guidance. The clinic is closed on Sundays, public holidays, Obon break (August 13-16), and year-end/New Year holidays (from December 28 afternoon to January 3).