Which of the following does HIPAA ensure regarding patient records?

The correct choice indicates that HIPAA grants patients the right to access and request amendments to their medical records. This is a fundamental aspect of the law, which establishes patients' rights to their own health information. Under HIPAA, individuals have the ability to inspect and obtain copies of their health records, as well as request changes if they believe the information is inaccurate or incomplete. This empowers patients to take an active role in their health care and ensures transparency in the management of their medical information.

The other options do not align with HIPAA's provisions. Patients can certainly access their records, so the first option is inaccurate. Providers are mandated to share relevant records with patients, making the third option incorrect as well. Lastly, HIPAA stipulates that requests from patients must be processed and cannot simply be ignored, further underscoring the importance of patient rights and access to their health information.