The Health Insurance Portability Accountability Act requires an offsite backup source for your confidential patient records.  If you are using an EHR/EMR system, and online backup provider can make this a snap.  Most qualified online backup resellers will be able to provide you with a system capable of backing up a wide variety of the most common database systems.

Backup To The Web : A full service online backup provider. Offers various sizes and packages, including tricky database and mail backups your practice might require. Free Trials are available.

iBackup : An online backup service. Offers a standard and "professional" service.