Arizona's Legal Assistance Program offers information, advice, assistance and advocacy to persons 60 years of age and older. To apply online, visit Health-e-Arizona Plus.How to Provide Your Information. If you're an adult applying for regular Medicaid, you'll need to fill out the Application for Benefits. How Do I Apply for Medicaid in Arizona as a Senior? You can use an online form to begin the Medicaid application process. AHCCCS offers health insurance for individuals 65 and older. For those who qualify, there are no monthly premiums. Apply for Benefits From Home! Click the following to apply online for Nutrition, Cash or Medical Assistance: APPLY ONLINE.