Cal. Bus. & Prof. Code § 4055

Nothing in this chapter, nor any other law, shall prohibit the sale of devices to clinics that have been issued a clinic license pursuant to Article 13 (commencing with Section 4180) of this chapter, or to skilled nursing facilities or intermediate care facilities licensed pursuant to Chapter 2 (commencing with Section 1250) of, or to home health agencies licensed pursuant to Chapter 8 (commencing with Section 1725) of, or to hospices licensed pursuant to Chapter 8.5 (commencing with Section 1745) of, Division 2 of, the Health and Safety Code, as long as the devices are furnished only upon the prescription or order of a physician, dentist, or podiatrist.