4. Client ID: (Required). Signatures: In general, a patient age 18 or older has legal authority to sign this form.I am a kinship caregiver. I do not have a court order or power of attorney. HIPAA authorization is a simple yet important document for family caregivers. It authorizes the doctor to keep approved family members in the loop. Organizing financial documents and medical records can help you understand your loved ones eligibility for public health insurance or VA benefits. Signatures: In general, a patient aged 18 or older has legal authority to sign this form.