Qualified practice settings include any of the following:

(1) Public or tax exempt corporations.

(2) For-profit practice settings that maintain and hold themselves out to the public as providing health care services to medicaid patients and post a sliding fee scale.

(3) For-profit practice settings that have established hours on a regular basis for providing free health care services.

(4) For-profit practice settings that participate, through a written agreement, in a community-based program to provide access to health care services for uninsured persons.