Hirosawa Internal Medicine Clinic is a clinic located at 550-1 Mizuno, Sayama City, Saitama Prefecture, offering internal medicine and hematology services. Reception hours are from 8:45 AM to 12:15 PM Monday through Saturday, and from 3:15 PM to 6:15 PM Monday through Wednesday and Friday. The clinic is closed on Thursday afternoons, Saturday afternoons, Sundays, and holidays. Closed days include weekly Sundays, as well as New Year's holidays and Obon holidays. The clinic offers English-language services and provides accessibility features including parking and barrier-free access. The facility is equipped with reception, waiting room, examination room, and treatment room, and patients are required to wear masks. If experiencing fever, difficulty breathing, or cold symptoms, patients are advised to contact the clinic by phone before visiting.