Visit Website NowMD medical billing & claims service software has many features to effectively operate a successful medical office. Appointment Scheduler is a feature that manages patient appointments. Appointment guide options let you tailor this feature for your needs. It can be used as a simple time slot reminder for appointment types and can be set to allow only appointments for a specific reason to be scheduled in a time slot. NowMD can be set to not allow any appointments to be scheduled during a specific time and can be set to repeat for specific days and times.