Can a covered entity refuse to disclose ePHI to an app chosen by an individual because of concerns about how the app will use or disclose the ePHI it receives?

No. The HIPAA Privacy Rule generally prohibits a covered entity from refusing to disclose ePHI to a third-party app designated by the individual if the ePHI is readily producible in the form and format used by the app. See 45 CFR 164.524(a)(1), (c)(2)(ii), (c)(3)(ii). The HIPAA Rules do not impose any restrictions on how an individual or the individual’s designee, such as an app, may use the health information that has been disclosed pursuant to the individual’s right of access.  For instance, a covered entity is not permitted to deny an individual’s right of access to their ePHI where the individual directs the information to a third-party app because the app will share the individual’s ePHI for research or because the app does not encrypt the individual’s data when at rest. In addition, as discussed in a separate FAQ, the HIPAA Rules do not apply to entities that do not meet the definition of a HIPAA covered entity or business associate.