SiteGround's website does not state that it is HIPAA compliant.
Covered entities that need web hosting services should choose a provider that offers digital and physical HIPAA-compliant safeguards. While most hosting providers provide HTTPS protocol and SSL certification for security, these features alone aren’t sufficient to meet HIPAA requirements. For a hosting account to be HIPAA compliant, it must include physical safeguards to protect equipment and servers. Audit controls and access controls are other digital security features that help with HIPAA compliance.