To apply, simply mail your application (English, Spanish, Vietnamese) to: Harris Health Financial Assistance Program P.O. Box Houston, TX. The Harris Health System, previously called the Gold Card, helps people with low or no income get quality health care. If you are uninsured, the Harris Health. information about the Harris Health System's eligiblity program for discounted medical care and includes links to additional information resources. Gold Card. How do I apply? · Eligibility Center Locations · Eligibility Requirements.